+// SPDX-License-Identifier: GPL-2.0
/*
- * Copyright (c) 2000 Silicon Graphics, Inc. All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it would be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- *
- * Further, this software is distributed without any warranty that it is
- * free of the rightful claim of any third person regarding infringement
- * or the like. Any license provided herein, whether implied or
- * otherwise, applies only to this software file. Patent licenses, if
- * any, provided herein do not apply to combinations of this program with
- * other software, or any other product whatsoever.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write the Free Software Foundation, Inc., 59
- * Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
- * Mountain View, CA 94043, or:
- *
- * http://www.sgi.com
- *
- * For further information regarding this notice, see:
- *
- * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
+ * Copyright (c) 2000-2005 Silicon Graphics, Inc.
+ * Copyright (c) 2013 Red Hat, Inc.
+ * All Rights Reserved.
*/
-
-#include <xfs.h>
+#include "libxfs_priv.h"
+#include "xfs_fs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_log_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_bit.h"
+#include "xfs_mount.h"
+#include "xfs_da_format.h"
+#include "xfs_da_btree.h"
+#include "xfs_dir2.h"
+#include "xfs_dir2_priv.h"
+#include "xfs_inode.h"
+#include "xfs_trans.h"
+#include "xfs_alloc.h"
+#include "xfs_bmap.h"
+#include "xfs_attr_leaf.h"
+#include "xfs_trace.h"
+#include "xfs_cksum.h"
/*
* xfs_da_btree.c
* Routines to implement directories as Btrees of hashed names.
*/
+/*========================================================================
+ * Function prototypes for the kernel.
+ *========================================================================*/
+
+/*
+ * Routines used for growing the Btree.
+ */
+STATIC int xfs_da3_root_split(xfs_da_state_t *state,
+ xfs_da_state_blk_t *existing_root,
+ xfs_da_state_blk_t *new_child);
+STATIC int xfs_da3_node_split(xfs_da_state_t *state,
+ xfs_da_state_blk_t *existing_blk,
+ xfs_da_state_blk_t *split_blk,
+ xfs_da_state_blk_t *blk_to_add,
+ int treelevel,
+ int *result);
+STATIC void xfs_da3_node_rebalance(xfs_da_state_t *state,
+ xfs_da_state_blk_t *node_blk_1,
+ xfs_da_state_blk_t *node_blk_2);
+STATIC void xfs_da3_node_add(xfs_da_state_t *state,
+ xfs_da_state_blk_t *old_node_blk,
+ xfs_da_state_blk_t *new_node_blk);
+
+/*
+ * Routines used for shrinking the Btree.
+ */
+STATIC int xfs_da3_root_join(xfs_da_state_t *state,
+ xfs_da_state_blk_t *root_blk);
+STATIC int xfs_da3_node_toosmall(xfs_da_state_t *state, int *retval);
+STATIC void xfs_da3_node_remove(xfs_da_state_t *state,
+ xfs_da_state_blk_t *drop_blk);
+STATIC void xfs_da3_node_unbalance(xfs_da_state_t *state,
+ xfs_da_state_blk_t *src_node_blk,
+ xfs_da_state_blk_t *dst_node_blk);
+
+/*
+ * Utility routines.
+ */
+STATIC int xfs_da3_blk_unlink(xfs_da_state_t *state,
+ xfs_da_state_blk_t *drop_blk,
+ xfs_da_state_blk_t *save_blk);
+
+
+kmem_zone_t *xfs_da_state_zone; /* anchor for state struct zone */
+
+/*
+ * Allocate a dir-state structure.
+ * We don't put them on the stack since they're large.
+ */
+xfs_da_state_t *
+xfs_da_state_alloc(void)
+{
+ return kmem_zone_zalloc(xfs_da_state_zone, KM_NOFS);
+}
+
+/*
+ * Kill the altpath contents of a da-state structure.
+ */
+STATIC void
+xfs_da_state_kill_altpath(xfs_da_state_t *state)
+{
+ int i;
+
+ for (i = 0; i < state->altpath.active; i++)
+ state->altpath.blk[i].bp = NULL;
+ state->altpath.active = 0;
+}
+
+/*
+ * Free a da-state structure.
+ */
+void
+xfs_da_state_free(xfs_da_state_t *state)
+{
+ xfs_da_state_kill_altpath(state);
+#ifdef DEBUG
+ memset((char *)state, 0, sizeof(*state));
+#endif /* DEBUG */
+ kmem_zone_free(xfs_da_state_zone, state);
+}
+
+static xfs_failaddr_t
+xfs_da3_node_verify(
+ struct xfs_buf *bp)
+{
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+ struct xfs_da_intnode *hdr = bp->b_addr;
+ struct xfs_da3_icnode_hdr ichdr;
+ const struct xfs_dir_ops *ops;
+
+ ops = xfs_dir_get_ops(mp, NULL);
+
+ ops->node_hdr_from_disk(&ichdr, hdr);
+
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ struct xfs_da3_node_hdr *hdr3 = bp->b_addr;
+
+ if (ichdr.magic != XFS_DA3_NODE_MAGIC)
+ return __this_address;
+
+ if (!uuid_equal(&hdr3->info.uuid, &mp->m_sb.sb_meta_uuid))
+ return __this_address;
+ if (be64_to_cpu(hdr3->info.blkno) != bp->b_bn)
+ return __this_address;
+ if (!xfs_log_check_lsn(mp, be64_to_cpu(hdr3->info.lsn)))
+ return __this_address;
+ } else {
+ if (ichdr.magic != XFS_DA_NODE_MAGIC)
+ return __this_address;
+ }
+ if (ichdr.level == 0)
+ return __this_address;
+ if (ichdr.level > XFS_DA_NODE_MAXDEPTH)
+ return __this_address;
+ if (ichdr.count == 0)
+ return __this_address;
+
+ /*
+ * we don't know if the node is for and attribute or directory tree,
+ * so only fail if the count is outside both bounds
+ */
+ if (ichdr.count > mp->m_dir_geo->node_ents &&
+ ichdr.count > mp->m_attr_geo->node_ents)
+ return __this_address;
+
+ /* XXX: hash order check? */
+
+ return NULL;
+}
+
+static void
+xfs_da3_node_write_verify(
+ struct xfs_buf *bp)
+{
+ struct xfs_mount *mp = bp->b_target->bt_mount;
+ struct xfs_buf_log_item *bip = bp->b_log_item;
+ struct xfs_da3_node_hdr *hdr3 = bp->b_addr;
+ xfs_failaddr_t fa;
+
+ fa = xfs_da3_node_verify(bp);
+ if (fa) {
+ xfs_verifier_error(bp, -EFSCORRUPTED, fa);
+ return;
+ }
+
+ if (!xfs_sb_version_hascrc(&mp->m_sb))
+ return;
+
+ if (bip)
+ hdr3->info.lsn = cpu_to_be64(bip->bli_item.li_lsn);
+
+ xfs_buf_update_cksum(bp, XFS_DA3_NODE_CRC_OFF);
+}
+
+/*
+ * leaf/node format detection on trees is sketchy, so a node read can be done on
+ * leaf level blocks when detection identifies the tree as a node format tree
+ * incorrectly. In this case, we need to swap the verifier to match the correct
+ * format of the block being read.
+ */
+static void
+xfs_da3_node_read_verify(
+ struct xfs_buf *bp)
+{
+ struct xfs_da_blkinfo *info = bp->b_addr;
+ xfs_failaddr_t fa;
+
+ switch (be16_to_cpu(info->magic)) {
+ case XFS_DA3_NODE_MAGIC:
+ if (!xfs_buf_verify_cksum(bp, XFS_DA3_NODE_CRC_OFF)) {
+ xfs_verifier_error(bp, -EFSBADCRC,
+ __this_address);
+ break;
+ }
+ /* fall through */
+ case XFS_DA_NODE_MAGIC:
+ fa = xfs_da3_node_verify(bp);
+ if (fa)
+ xfs_verifier_error(bp, -EFSCORRUPTED, fa);
+ return;
+ case XFS_ATTR_LEAF_MAGIC:
+ case XFS_ATTR3_LEAF_MAGIC:
+ bp->b_ops = &xfs_attr3_leaf_buf_ops;
+ bp->b_ops->verify_read(bp);
+ return;
+ case XFS_DIR2_LEAFN_MAGIC:
+ case XFS_DIR3_LEAFN_MAGIC:
+ bp->b_ops = &xfs_dir3_leafn_buf_ops;
+ bp->b_ops->verify_read(bp);
+ return;
+ default:
+ xfs_verifier_error(bp, -EFSCORRUPTED, __this_address);
+ break;
+ }
+}
+
+/* Verify the structure of a da3 block. */
+static xfs_failaddr_t
+xfs_da3_node_verify_struct(
+ struct xfs_buf *bp)
+{
+ struct xfs_da_blkinfo *info = bp->b_addr;
+
+ switch (be16_to_cpu(info->magic)) {
+ case XFS_DA3_NODE_MAGIC:
+ case XFS_DA_NODE_MAGIC:
+ return xfs_da3_node_verify(bp);
+ case XFS_ATTR_LEAF_MAGIC:
+ case XFS_ATTR3_LEAF_MAGIC:
+ bp->b_ops = &xfs_attr3_leaf_buf_ops;
+ return bp->b_ops->verify_struct(bp);
+ case XFS_DIR2_LEAFN_MAGIC:
+ case XFS_DIR3_LEAFN_MAGIC:
+ bp->b_ops = &xfs_dir3_leafn_buf_ops;
+ return bp->b_ops->verify_struct(bp);
+ default:
+ return __this_address;
+ }
+}
+
+const struct xfs_buf_ops xfs_da3_node_buf_ops = {
+ .name = "xfs_da3_node",
+ .verify_read = xfs_da3_node_read_verify,
+ .verify_write = xfs_da3_node_write_verify,
+ .verify_struct = xfs_da3_node_verify_struct,
+};
+
+int
+xfs_da3_node_read(
+ struct xfs_trans *tp,
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
+ xfs_daddr_t mappedbno,
+ struct xfs_buf **bpp,
+ int which_fork)
+{
+ int err;
+
+ err = xfs_da_read_buf(tp, dp, bno, mappedbno, bpp,
+ which_fork, &xfs_da3_node_buf_ops);
+ if (!err && tp && *bpp) {
+ struct xfs_da_blkinfo *info = (*bpp)->b_addr;
+ int type;
+
+ switch (be16_to_cpu(info->magic)) {
+ case XFS_DA_NODE_MAGIC:
+ case XFS_DA3_NODE_MAGIC:
+ type = XFS_BLFT_DA_NODE_BUF;
+ break;
+ case XFS_ATTR_LEAF_MAGIC:
+ case XFS_ATTR3_LEAF_MAGIC:
+ type = XFS_BLFT_ATTR_LEAF_BUF;
+ break;
+ case XFS_DIR2_LEAFN_MAGIC:
+ case XFS_DIR3_LEAFN_MAGIC:
+ type = XFS_BLFT_DIR_LEAFN_BUF;
+ break;
+ default:
+ XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW,
+ tp->t_mountp, info, sizeof(*info));
+ xfs_trans_brelse(tp, *bpp);
+ *bpp = NULL;
+ return -EFSCORRUPTED;
+ }
+ xfs_trans_buf_set_type(tp, *bpp, type);
+ }
+ return err;
+}
/*========================================================================
* Routines used for growing the Btree.
* Create the initial contents of an intermediate node.
*/
int
-xfs_da_node_create(xfs_da_args_t *args, xfs_dablk_t blkno, int level,
- xfs_dabuf_t **bpp, int whichfork)
+xfs_da3_node_create(
+ struct xfs_da_args *args,
+ xfs_dablk_t blkno,
+ int level,
+ struct xfs_buf **bpp,
+ int whichfork)
{
- xfs_da_intnode_t *node;
- xfs_dabuf_t *bp;
- int error;
- xfs_trans_t *tp;
-
- tp = args->trans;
- error = xfs_da_get_buf(tp, args->dp, blkno, -1, &bp, whichfork);
+ struct xfs_da_intnode *node;
+ struct xfs_trans *tp = args->trans;
+ struct xfs_mount *mp = tp->t_mountp;
+ struct xfs_da3_icnode_hdr ichdr = {0};
+ struct xfs_buf *bp;
+ int error;
+ struct xfs_inode *dp = args->dp;
+
+ trace_xfs_da_node_create(args);
+ ASSERT(level <= XFS_DA_NODE_MAXDEPTH);
+
+ error = xfs_da_get_buf(tp, dp, blkno, -1, &bp, whichfork);
if (error)
- return(error);
- ASSERT(bp != NULL);
- node = bp->data;
- INT_ZERO(node->hdr.info.forw, ARCH_CONVERT);
- INT_ZERO(node->hdr.info.back, ARCH_CONVERT);
- INT_SET(node->hdr.info.magic, ARCH_CONVERT, XFS_DA_NODE_MAGIC);
- INT_ZERO(node->hdr.info.pad, ARCH_CONVERT);
- INT_ZERO(node->hdr.count, ARCH_CONVERT);
- INT_SET(node->hdr.level, ARCH_CONVERT, level);
-
- xfs_da_log_buf(tp, bp,
- XFS_DA_LOGRANGE(node, &node->hdr, sizeof(node->hdr)));
+ return error;
+ bp->b_ops = &xfs_da3_node_buf_ops;
+ xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DA_NODE_BUF);
+ node = bp->b_addr;
+
+ if (xfs_sb_version_hascrc(&mp->m_sb)) {
+ struct xfs_da3_node_hdr *hdr3 = bp->b_addr;
+
+ memset(hdr3, 0, sizeof(struct xfs_da3_node_hdr));
+ ichdr.magic = XFS_DA3_NODE_MAGIC;
+ hdr3->info.blkno = cpu_to_be64(bp->b_bn);
+ hdr3->info.owner = cpu_to_be64(args->dp->i_ino);
+ uuid_copy(&hdr3->info.uuid, &mp->m_sb.sb_meta_uuid);
+ } else {
+ ichdr.magic = XFS_DA_NODE_MAGIC;
+ }
+ ichdr.level = level;
+
+ dp->d_ops->node_hdr_to_disk(node, &ichdr);
+ xfs_trans_log_buf(tp, bp,
+ XFS_DA_LOGRANGE(node, &node->hdr, dp->d_ops->node_hdr_size));
*bpp = bp;
- return(0);
+ return 0;
}
/*
* intermediate nodes, rebalance, etc.
*/
int /* error */
-xfs_da_split(xfs_da_state_t *state)
+xfs_da3_split(
+ struct xfs_da_state *state)
{
- xfs_da_state_blk_t *oldblk, *newblk, *addblk;
- xfs_da_intnode_t *node;
- xfs_dabuf_t *bp;
- int max, action, error, i;
+ struct xfs_da_state_blk *oldblk;
+ struct xfs_da_state_blk *newblk;
+ struct xfs_da_state_blk *addblk;
+ struct xfs_da_intnode *node;
+ int max;
+ int action = 0;
+ int error;
+ int i;
+
+ trace_xfs_da_split(state->args);
/*
* Walk back up the tree splitting/inserting/adjusting as necessary.
max = state->path.active - 1;
ASSERT((max >= 0) && (max < XFS_DA_NODE_MAXDEPTH));
ASSERT(state->path.blk[max].magic == XFS_ATTR_LEAF_MAGIC ||
- state->path.blk[max].magic == XFS_DIRX_LEAF_MAGIC(state->mp));
+ state->path.blk[max].magic == XFS_DIR2_LEAFN_MAGIC);
addblk = &state->path.blk[max]; /* initial dummy value */
for (i = max; (i >= 0) && addblk; state->path.active--, i--) {
*/
switch (oldblk->magic) {
case XFS_ATTR_LEAF_MAGIC:
-#ifndef __KERNEL__
- return(ENOTTY);
-#else
- error = xfs_attr_leaf_split(state, oldblk, newblk);
- if ((error != 0) && (error != ENOSPC)) {
- return(error); /* GROT: attr is inconsistent */
+ error = xfs_attr3_leaf_split(state, oldblk, newblk);
+ if ((error != 0) && (error != -ENOSPC)) {
+ return error; /* GROT: attr is inconsistent */
}
if (!error) {
addblk = newblk;
break;
}
/*
- * Entry wouldn't fit, split the leaf again.
+ * Entry wouldn't fit, split the leaf again. The new
+ * extrablk will be consumed by xfs_da3_node_split if
+ * the node is split.
*/
state->extravalid = 1;
if (state->inleaf) {
state->extraafter = 0; /* before newblk */
- error = xfs_attr_leaf_split(state, oldblk,
+ trace_xfs_attr_leaf_split_before(state->args);
+ error = xfs_attr3_leaf_split(state, oldblk,
&state->extrablk);
} else {
state->extraafter = 1; /* after newblk */
- error = xfs_attr_leaf_split(state, newblk,
+ trace_xfs_attr_leaf_split_after(state->args);
+ error = xfs_attr3_leaf_split(state, newblk,
&state->extrablk);
}
if (error)
- return(error); /* GROT: attr inconsistent */
+ return error; /* GROT: attr inconsistent */
addblk = newblk;
break;
-#endif
- case XFS_DIR_LEAF_MAGIC:
- ASSERT(XFS_DIR_IS_V1(state->mp));
- error = xfs_dir_leaf_split(state, oldblk, newblk);
- if ((error != 0) && (error != ENOSPC)) {
- return(error); /* GROT: dir is inconsistent */
- }
- if (!error) {
- addblk = newblk;
- break;
- }
- /*
- * Entry wouldn't fit, split the leaf again.
- */
- state->extravalid = 1;
- if (state->inleaf) {
- state->extraafter = 0; /* before newblk */
- error = xfs_dir_leaf_split(state, oldblk,
- &state->extrablk);
- if (error)
- return(error); /* GROT: dir incon. */
- addblk = newblk;
- } else {
- state->extraafter = 1; /* after newblk */
- error = xfs_dir_leaf_split(state, newblk,
- &state->extrablk);
- if (error)
- return(error); /* GROT: dir incon. */
- addblk = newblk;
- }
- break;
case XFS_DIR2_LEAFN_MAGIC:
- ASSERT(XFS_DIR_IS_V2(state->mp));
error = xfs_dir2_leafn_split(state, oldblk, newblk);
if (error)
return error;
addblk = newblk;
break;
case XFS_DA_NODE_MAGIC:
- error = xfs_da_node_split(state, oldblk, newblk, addblk,
+ error = xfs_da3_node_split(state, oldblk, newblk, addblk,
max - i, &action);
- xfs_da_buf_done(addblk->bp);
addblk->bp = NULL;
if (error)
- return(error); /* GROT: dir is inconsistent */
+ return error; /* GROT: dir is inconsistent */
/*
* Record the newly split block for the next time thru?
*/
/*
* Update the btree to show the new hashval for this child.
*/
- xfs_da_fixhashpath(state, &state->path);
- /*
- * If we won't need this block again, it's getting dropped
- * from the active path by the loop control, so we need
- * to mark it done now.
- */
- if (i > 0 || !addblk)
- xfs_da_buf_done(oldblk->bp);
+ xfs_da3_fixhashpath(state, &state->path);
}
if (!addblk)
- return(0);
+ return 0;
+
+ /*
+ * xfs_da3_node_split() should have consumed any extra blocks we added
+ * during a double leaf split in the attr fork. This is guaranteed as
+ * we can't be here if the attr fork only has a single leaf block.
+ */
+ ASSERT(state->extravalid == 0 ||
+ state->path.blk[max].magic == XFS_DIR2_LEAFN_MAGIC);
/*
* Split the root node.
*/
ASSERT(state->path.active == 0);
oldblk = &state->path.blk[0];
- error = xfs_da_root_split(state, oldblk, addblk);
+ error = xfs_da3_root_split(state, oldblk, addblk);
if (error) {
- xfs_da_buf_done(oldblk->bp);
- xfs_da_buf_done(addblk->bp);
addblk->bp = NULL;
- return(error); /* GROT: dir is inconsistent */
+ return error; /* GROT: dir is inconsistent */
}
/*
- * Update pointers to the node which used to be block 0 and
- * just got bumped because of the addition of a new root node.
- * There might be three blocks involved if a double split occurred,
- * and the original block 0 could be at any position in the list.
+ * Update pointers to the node which used to be block 0 and just got
+ * bumped because of the addition of a new root node. Note that the
+ * original block 0 could be at any position in the list of blocks in
+ * the tree.
+ *
+ * Note: the magic numbers and sibling pointers are in the same physical
+ * place for both v2 and v3 headers (by design). Hence it doesn't matter
+ * which version of the xfs_da_intnode structure we use here as the
+ * result will be the same using either structure.
*/
-
- node = oldblk->bp->data;
- if (!INT_ISZERO(node->hdr.info.forw, ARCH_CONVERT)) {
- if (INT_GET(node->hdr.info.forw, ARCH_CONVERT) == addblk->blkno) {
- bp = addblk->bp;
- } else {
- ASSERT(state->extravalid);
- bp = state->extrablk.bp;
- }
- node = bp->data;
- INT_SET(node->hdr.info.back, ARCH_CONVERT, oldblk->blkno);
- xfs_da_log_buf(state->args->trans, bp,
- XFS_DA_LOGRANGE(node, &node->hdr.info,
- sizeof(node->hdr.info)));
- }
- node = oldblk->bp->data;
- if (INT_GET(node->hdr.info.back, ARCH_CONVERT)) {
- if (INT_GET(node->hdr.info.back, ARCH_CONVERT) == addblk->blkno) {
- bp = addblk->bp;
- } else {
- ASSERT(state->extravalid);
- bp = state->extrablk.bp;
- }
- node = bp->data;
- INT_SET(node->hdr.info.forw, ARCH_CONVERT, oldblk->blkno);
- xfs_da_log_buf(state->args->trans, bp,
- XFS_DA_LOGRANGE(node, &node->hdr.info,
- sizeof(node->hdr.info)));
+ node = oldblk->bp->b_addr;
+ if (node->hdr.info.forw) {
+ ASSERT(be32_to_cpu(node->hdr.info.forw) == addblk->blkno);
+ node = addblk->bp->b_addr;
+ node->hdr.info.back = cpu_to_be32(oldblk->blkno);
+ xfs_trans_log_buf(state->args->trans, addblk->bp,
+ XFS_DA_LOGRANGE(node, &node->hdr.info,
+ sizeof(node->hdr.info)));
+ }
+ node = oldblk->bp->b_addr;
+ if (node->hdr.info.back) {
+ ASSERT(be32_to_cpu(node->hdr.info.back) == addblk->blkno);
+ node = addblk->bp->b_addr;
+ node->hdr.info.forw = cpu_to_be32(oldblk->blkno);
+ xfs_trans_log_buf(state->args->trans, addblk->bp,
+ XFS_DA_LOGRANGE(node, &node->hdr.info,
+ sizeof(node->hdr.info)));
}
- xfs_da_buf_done(oldblk->bp);
- xfs_da_buf_done(addblk->bp);
addblk->bp = NULL;
- return(0);
+ return 0;
}
/*
* the EOF, extending the inode in process.
*/
STATIC int /* error */
-xfs_da_root_split(xfs_da_state_t *state, xfs_da_state_blk_t *blk1,
- xfs_da_state_blk_t *blk2)
+xfs_da3_root_split(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *blk1,
+ struct xfs_da_state_blk *blk2)
{
- xfs_da_intnode_t *node, *oldroot;
- xfs_da_args_t *args;
- xfs_dablk_t blkno;
- xfs_dabuf_t *bp;
- int error, size;
- xfs_inode_t *dp;
- xfs_trans_t *tp;
- xfs_mount_t *mp;
- xfs_dir2_leaf_t *leaf;
+ struct xfs_da_intnode *node;
+ struct xfs_da_intnode *oldroot;
+ struct xfs_da_node_entry *btree;
+ struct xfs_da3_icnode_hdr nodehdr;
+ struct xfs_da_args *args;
+ struct xfs_buf *bp;
+ struct xfs_inode *dp;
+ struct xfs_trans *tp;
+ struct xfs_dir2_leaf *leaf;
+ xfs_dablk_t blkno;
+ int level;
+ int error;
+ int size;
+
+ trace_xfs_da_root_split(state->args);
/*
* Copy the existing (incorrect) block from the root node position
* to a free space somewhere.
*/
args = state->args;
- ASSERT(args != NULL);
error = xfs_da_grow_inode(args, &blkno);
if (error)
- return(error);
+ return error;
+
dp = args->dp;
tp = args->trans;
- mp = state->mp;
error = xfs_da_get_buf(tp, dp, blkno, -1, &bp, args->whichfork);
if (error)
- return(error);
- ASSERT(bp != NULL);
- node = bp->data;
- oldroot = blk1->bp->data;
- if (INT_GET(oldroot->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC) {
- size = (int)((char *)&oldroot->btree[INT_GET(oldroot->hdr.count, ARCH_CONVERT)] -
- (char *)oldroot);
+ return error;
+ node = bp->b_addr;
+ oldroot = blk1->bp->b_addr;
+ if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DA_NODE_MAGIC) ||
+ oldroot->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC)) {
+ struct xfs_da3_icnode_hdr icnodehdr;
+
+ dp->d_ops->node_hdr_from_disk(&icnodehdr, oldroot);
+ btree = dp->d_ops->node_tree_p(oldroot);
+ size = (int)((char *)&btree[icnodehdr.count] - (char *)oldroot);
+ level = icnodehdr.level;
+
+ /*
+ * we are about to copy oldroot to bp, so set up the type
+ * of bp while we know exactly what it will be.
+ */
+ xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DA_NODE_BUF);
} else {
- ASSERT(XFS_DIR_IS_V2(mp));
- ASSERT(INT_GET(oldroot->hdr.info.magic, ARCH_CONVERT) == XFS_DIR2_LEAFN_MAGIC);
+ struct xfs_dir3_icleaf_hdr leafhdr;
+ struct xfs_dir2_leaf_entry *ents;
+
leaf = (xfs_dir2_leaf_t *)oldroot;
- size = (int)((char *)&leaf->ents[INT_GET(leaf->hdr.count, ARCH_CONVERT)] -
- (char *)leaf);
+ dp->d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
+ ents = dp->d_ops->leaf_ents_p(leaf);
+
+ ASSERT(leafhdr.magic == XFS_DIR2_LEAFN_MAGIC ||
+ leafhdr.magic == XFS_DIR3_LEAFN_MAGIC);
+ size = (int)((char *)&ents[leafhdr.count] - (char *)leaf);
+ level = 0;
+
+ /*
+ * we are about to copy oldroot to bp, so set up the type
+ * of bp while we know exactly what it will be.
+ */
+ xfs_trans_buf_set_type(tp, bp, XFS_BLFT_DIR_LEAFN_BUF);
+ }
+
+ /*
+ * we can copy most of the information in the node from one block to
+ * another, but for CRC enabled headers we have to make sure that the
+ * block specific identifiers are kept intact. We update the buffer
+ * directly for this.
+ */
+ memcpy(node, oldroot, size);
+ if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DA3_NODE_MAGIC) ||
+ oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) {
+ struct xfs_da3_intnode *node3 = (struct xfs_da3_intnode *)node;
+
+ node3->hdr.info.blkno = cpu_to_be64(bp->b_bn);
}
- bcopy(oldroot, node, size);
- xfs_da_log_buf(tp, bp, 0, size - 1);
- xfs_da_buf_done(blk1->bp);
+ xfs_trans_log_buf(tp, bp, 0, size - 1);
+
+ bp->b_ops = blk1->bp->b_ops;
+ xfs_trans_buf_copy_type(bp, blk1->bp);
blk1->bp = bp;
blk1->blkno = blkno;
/*
* Set up the new root node.
*/
- error = xfs_da_node_create(args,
- args->whichfork == XFS_DATA_FORK &&
- XFS_DIR_IS_V2(mp) ? mp->m_dirleafblk : 0,
- INT_GET(node->hdr.level, ARCH_CONVERT) + 1, &bp, args->whichfork);
+ error = xfs_da3_node_create(args,
+ (args->whichfork == XFS_DATA_FORK) ? args->geo->leafblk : 0,
+ level + 1, &bp, args->whichfork);
if (error)
- return(error);
- node = bp->data;
- INT_SET(node->btree[0].hashval, ARCH_CONVERT, blk1->hashval);
- INT_SET(node->btree[0].before, ARCH_CONVERT, blk1->blkno);
- INT_SET(node->btree[1].hashval, ARCH_CONVERT, blk2->hashval);
- INT_SET(node->btree[1].before, ARCH_CONVERT, blk2->blkno);
- INT_SET(node->hdr.count, ARCH_CONVERT, 2);
- if (XFS_DIR_IS_V2(mp)) {
- ASSERT(blk1->blkno >= mp->m_dirleafblk &&
- blk1->blkno < mp->m_dirfreeblk);
- ASSERT(blk2->blkno >= mp->m_dirleafblk &&
- blk2->blkno < mp->m_dirfreeblk);
+ return error;
+
+ node = bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ btree = dp->d_ops->node_tree_p(node);
+ btree[0].hashval = cpu_to_be32(blk1->hashval);
+ btree[0].before = cpu_to_be32(blk1->blkno);
+ btree[1].hashval = cpu_to_be32(blk2->hashval);
+ btree[1].before = cpu_to_be32(blk2->blkno);
+ nodehdr.count = 2;
+ dp->d_ops->node_hdr_to_disk(node, &nodehdr);
+
+#ifdef DEBUG
+ if (oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
+ oldroot->hdr.info.magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) {
+ ASSERT(blk1->blkno >= args->geo->leafblk &&
+ blk1->blkno < args->geo->freeblk);
+ ASSERT(blk2->blkno >= args->geo->leafblk &&
+ blk2->blkno < args->geo->freeblk);
}
+#endif
+
/* Header is already logged by xfs_da_node_create */
- xfs_da_log_buf(tp, bp,
- XFS_DA_LOGRANGE(node, node->btree,
- sizeof(xfs_da_node_entry_t) * 2));
- xfs_da_buf_done(bp);
+ xfs_trans_log_buf(tp, bp,
+ XFS_DA_LOGRANGE(node, btree, sizeof(xfs_da_node_entry_t) * 2));
- return(0);
+ return 0;
}
/*
* Split the node, rebalance, then add the new entry.
*/
STATIC int /* error */
-xfs_da_node_split(xfs_da_state_t *state, xfs_da_state_blk_t *oldblk,
- xfs_da_state_blk_t *newblk,
- xfs_da_state_blk_t *addblk,
- int treelevel, int *result)
+xfs_da3_node_split(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *oldblk,
+ struct xfs_da_state_blk *newblk,
+ struct xfs_da_state_blk *addblk,
+ int treelevel,
+ int *result)
{
- xfs_da_intnode_t *node;
- xfs_dablk_t blkno;
- int newcount, error;
- int useextra;
+ struct xfs_da_intnode *node;
+ struct xfs_da3_icnode_hdr nodehdr;
+ xfs_dablk_t blkno;
+ int newcount;
+ int error;
+ int useextra;
+ struct xfs_inode *dp = state->args->dp;
- node = oldblk->bp->data;
- ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
+ trace_xfs_da_node_split(state->args);
+
+ node = oldblk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
/*
- * With V2 the extra block is data or freespace.
+ * With V2 dirs the extra block is data or freespace.
*/
- useextra = state->extravalid && XFS_DIR_IS_V1(state->mp);
+ useextra = state->extravalid && state->args->whichfork == XFS_ATTR_FORK;
newcount = 1 + useextra;
/*
* Do we have to split the node?
*/
- if ((INT_GET(node->hdr.count, ARCH_CONVERT) + newcount) > XFS_DA_NODE_ENTRIES(state->mp)) {
+ if (nodehdr.count + newcount > state->args->geo->node_ents) {
/*
* Allocate a new node, add to the doubly linked chain of
* nodes, then move some of our excess entries into it.
*/
error = xfs_da_grow_inode(state->args, &blkno);
if (error)
- return(error); /* GROT: dir is inconsistent */
-
- error = xfs_da_node_create(state->args, blkno, treelevel,
+ return error; /* GROT: dir is inconsistent */
+
+ error = xfs_da3_node_create(state->args, blkno, treelevel,
&newblk->bp, state->args->whichfork);
if (error)
- return(error); /* GROT: dir is inconsistent */
+ return error; /* GROT: dir is inconsistent */
newblk->blkno = blkno;
newblk->magic = XFS_DA_NODE_MAGIC;
- xfs_da_node_rebalance(state, oldblk, newblk);
- error = xfs_da_blk_link(state, oldblk, newblk);
+ xfs_da3_node_rebalance(state, oldblk, newblk);
+ error = xfs_da3_blk_link(state, oldblk, newblk);
if (error)
- return(error);
+ return error;
*result = 1;
} else {
*result = 0;
* Insert the new entry(s) into the correct block
* (updating last hashval in the process).
*
- * xfs_da_node_add() inserts BEFORE the given index,
+ * xfs_da3_node_add() inserts BEFORE the given index,
* and as a result of using node_lookup_int() we always
* point to a valid entry (not after one), but a split
* operation always results in a new block whose hashvals
*
* If we had double-split op below us, then add the extra block too.
*/
- node = oldblk->bp->data;
- if (oldblk->index <= INT_GET(node->hdr.count, ARCH_CONVERT)) {
+ node = oldblk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ if (oldblk->index <= nodehdr.count) {
oldblk->index++;
- xfs_da_node_add(state, oldblk, addblk);
+ xfs_da3_node_add(state, oldblk, addblk);
if (useextra) {
if (state->extraafter)
oldblk->index++;
- xfs_da_node_add(state, oldblk, &state->extrablk);
+ xfs_da3_node_add(state, oldblk, &state->extrablk);
state->extravalid = 0;
}
} else {
newblk->index++;
- xfs_da_node_add(state, newblk, addblk);
+ xfs_da3_node_add(state, newblk, addblk);
if (useextra) {
if (state->extraafter)
newblk->index++;
- xfs_da_node_add(state, newblk, &state->extrablk);
+ xfs_da3_node_add(state, newblk, &state->extrablk);
state->extravalid = 0;
}
}
- return(0);
+ return 0;
}
/*
* NOTE: if blk2 is empty, then it will get the upper half of blk1.
*/
STATIC void
-xfs_da_node_rebalance(xfs_da_state_t *state, xfs_da_state_blk_t *blk1,
- xfs_da_state_blk_t *blk2)
+xfs_da3_node_rebalance(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *blk1,
+ struct xfs_da_state_blk *blk2)
{
- xfs_da_intnode_t *node1, *node2, *tmpnode;
- xfs_da_node_entry_t *btree_s, *btree_d;
- int count, tmp;
- xfs_trans_t *tp;
+ struct xfs_da_intnode *node1;
+ struct xfs_da_intnode *node2;
+ struct xfs_da_intnode *tmpnode;
+ struct xfs_da_node_entry *btree1;
+ struct xfs_da_node_entry *btree2;
+ struct xfs_da_node_entry *btree_s;
+ struct xfs_da_node_entry *btree_d;
+ struct xfs_da3_icnode_hdr nodehdr1;
+ struct xfs_da3_icnode_hdr nodehdr2;
+ struct xfs_trans *tp;
+ int count;
+ int tmp;
+ int swap = 0;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_node_rebalance(state->args);
+
+ node1 = blk1->bp->b_addr;
+ node2 = blk2->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr1, node1);
+ dp->d_ops->node_hdr_from_disk(&nodehdr2, node2);
+ btree1 = dp->d_ops->node_tree_p(node1);
+ btree2 = dp->d_ops->node_tree_p(node2);
- node1 = blk1->bp->data;
- node2 = blk2->bp->data;
/*
* Figure out how many entries need to move, and in which direction.
* Swap the nodes around if that makes it simpler.
*/
- if ((INT_GET(node1->hdr.count, ARCH_CONVERT) > 0) && (INT_GET(node2->hdr.count, ARCH_CONVERT) > 0) &&
- ((INT_GET(node2->btree[ 0 ].hashval, ARCH_CONVERT) < INT_GET(node1->btree[ 0 ].hashval, ARCH_CONVERT)) ||
- (INT_GET(node2->btree[ INT_GET(node2->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT) <
- INT_GET(node1->btree[ INT_GET(node1->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT)))) {
+ if (nodehdr1.count > 0 && nodehdr2.count > 0 &&
+ ((be32_to_cpu(btree2[0].hashval) < be32_to_cpu(btree1[0].hashval)) ||
+ (be32_to_cpu(btree2[nodehdr2.count - 1].hashval) <
+ be32_to_cpu(btree1[nodehdr1.count - 1].hashval)))) {
tmpnode = node1;
node1 = node2;
node2 = tmpnode;
+ dp->d_ops->node_hdr_from_disk(&nodehdr1, node1);
+ dp->d_ops->node_hdr_from_disk(&nodehdr2, node2);
+ btree1 = dp->d_ops->node_tree_p(node1);
+ btree2 = dp->d_ops->node_tree_p(node2);
+ swap = 1;
}
- ASSERT(INT_GET(node1->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- ASSERT(INT_GET(node2->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- count = (INT_GET(node1->hdr.count, ARCH_CONVERT) - INT_GET(node2->hdr.count, ARCH_CONVERT)) / 2;
+
+ count = (nodehdr1.count - nodehdr2.count) / 2;
if (count == 0)
return;
tp = state->args->trans;
/*
* Move elements in node2 up to make a hole.
*/
- if ((tmp = INT_GET(node2->hdr.count, ARCH_CONVERT)) > 0) {
+ tmp = nodehdr2.count;
+ if (tmp > 0) {
tmp *= (uint)sizeof(xfs_da_node_entry_t);
- btree_s = &node2->btree[0];
- btree_d = &node2->btree[count];
- ovbcopy(btree_s, btree_d, tmp);
+ btree_s = &btree2[0];
+ btree_d = &btree2[count];
+ memmove(btree_d, btree_s, tmp);
}
/*
* Move the req'd B-tree elements from high in node1 to
* low in node2.
*/
- INT_MOD(node2->hdr.count, ARCH_CONVERT, count);
+ nodehdr2.count += count;
tmp = count * (uint)sizeof(xfs_da_node_entry_t);
- btree_s = &node1->btree[INT_GET(node1->hdr.count, ARCH_CONVERT) - count];
- btree_d = &node2->btree[0];
- bcopy(btree_s, btree_d, tmp);
- INT_MOD(node1->hdr.count, ARCH_CONVERT, -(count));
-
+ btree_s = &btree1[nodehdr1.count - count];
+ btree_d = &btree2[0];
+ memcpy(btree_d, btree_s, tmp);
+ nodehdr1.count -= count;
} else {
/*
* Move the req'd B-tree elements from low in node2 to
*/
count = -count;
tmp = count * (uint)sizeof(xfs_da_node_entry_t);
- btree_s = &node2->btree[0];
- btree_d = &node1->btree[INT_GET(node1->hdr.count, ARCH_CONVERT)];
- bcopy(btree_s, btree_d, tmp);
- INT_MOD(node1->hdr.count, ARCH_CONVERT, count);
- xfs_da_log_buf(tp, blk1->bp,
+ btree_s = &btree2[0];
+ btree_d = &btree1[nodehdr1.count];
+ memcpy(btree_d, btree_s, tmp);
+ nodehdr1.count += count;
+
+ xfs_trans_log_buf(tp, blk1->bp,
XFS_DA_LOGRANGE(node1, btree_d, tmp));
/*
* Move elements in node2 down to fill the hole.
*/
- tmp = INT_GET(node2->hdr.count, ARCH_CONVERT) - count;
+ tmp = nodehdr2.count - count;
tmp *= (uint)sizeof(xfs_da_node_entry_t);
- btree_s = &node2->btree[count];
- btree_d = &node2->btree[0];
- ovbcopy(btree_s, btree_d, tmp);
- INT_MOD(node2->hdr.count, ARCH_CONVERT, -(count));
+ btree_s = &btree2[count];
+ btree_d = &btree2[0];
+ memmove(btree_d, btree_s, tmp);
+ nodehdr2.count -= count;
}
/*
* Log header of node 1 and all current bits of node 2.
*/
- xfs_da_log_buf(tp, blk1->bp,
- XFS_DA_LOGRANGE(node1, &node1->hdr, sizeof(node1->hdr)));
- xfs_da_log_buf(tp, blk2->bp,
+ dp->d_ops->node_hdr_to_disk(node1, &nodehdr1);
+ xfs_trans_log_buf(tp, blk1->bp,
+ XFS_DA_LOGRANGE(node1, &node1->hdr, dp->d_ops->node_hdr_size));
+
+ dp->d_ops->node_hdr_to_disk(node2, &nodehdr2);
+ xfs_trans_log_buf(tp, blk2->bp,
XFS_DA_LOGRANGE(node2, &node2->hdr,
- sizeof(node2->hdr) +
- sizeof(node2->btree[0]) * INT_GET(node2->hdr.count, ARCH_CONVERT)));
+ dp->d_ops->node_hdr_size +
+ (sizeof(btree2[0]) * nodehdr2.count)));
/*
* Record the last hashval from each block for upward propagation.
* (note: don't use the swapped node pointers)
*/
- node1 = blk1->bp->data;
- node2 = blk2->bp->data;
- blk1->hashval = INT_GET(node1->btree[ INT_GET(node1->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
- blk2->hashval = INT_GET(node2->btree[ INT_GET(node2->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
+ if (swap) {
+ node1 = blk1->bp->b_addr;
+ node2 = blk2->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr1, node1);
+ dp->d_ops->node_hdr_from_disk(&nodehdr2, node2);
+ btree1 = dp->d_ops->node_tree_p(node1);
+ btree2 = dp->d_ops->node_tree_p(node2);
+ }
+ blk1->hashval = be32_to_cpu(btree1[nodehdr1.count - 1].hashval);
+ blk2->hashval = be32_to_cpu(btree2[nodehdr2.count - 1].hashval);
/*
* Adjust the expected index for insertion.
*/
- if (blk1->index >= INT_GET(node1->hdr.count, ARCH_CONVERT)) {
- blk2->index = blk1->index - INT_GET(node1->hdr.count, ARCH_CONVERT);
- blk1->index = INT_GET(node1->hdr.count, ARCH_CONVERT) + 1; /* make it invalid */
+ if (blk1->index >= nodehdr1.count) {
+ blk2->index = blk1->index - nodehdr1.count;
+ blk1->index = nodehdr1.count + 1; /* make it invalid */
}
}
* Add a new entry to an intermediate node.
*/
STATIC void
-xfs_da_node_add(xfs_da_state_t *state, xfs_da_state_blk_t *oldblk,
- xfs_da_state_blk_t *newblk)
+xfs_da3_node_add(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *oldblk,
+ struct xfs_da_state_blk *newblk)
{
- xfs_da_intnode_t *node;
- xfs_da_node_entry_t *btree;
- int tmp;
- xfs_mount_t *mp;
-
- node = oldblk->bp->data;
- mp = state->mp;
- ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- ASSERT((oldblk->index >= 0) && (oldblk->index <= INT_GET(node->hdr.count, ARCH_CONVERT)));
+ struct xfs_da_intnode *node;
+ struct xfs_da3_icnode_hdr nodehdr;
+ struct xfs_da_node_entry *btree;
+ int tmp;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_node_add(state->args);
+
+ node = oldblk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ btree = dp->d_ops->node_tree_p(node);
+
+ ASSERT(oldblk->index >= 0 && oldblk->index <= nodehdr.count);
ASSERT(newblk->blkno != 0);
- if (state->args->whichfork == XFS_DATA_FORK && XFS_DIR_IS_V2(mp))
- ASSERT(newblk->blkno >= mp->m_dirleafblk &&
- newblk->blkno < mp->m_dirfreeblk);
+ if (state->args->whichfork == XFS_DATA_FORK)
+ ASSERT(newblk->blkno >= state->args->geo->leafblk &&
+ newblk->blkno < state->args->geo->freeblk);
/*
* We may need to make some room before we insert the new node.
*/
tmp = 0;
- btree = &node->btree[ oldblk->index ];
- if (oldblk->index < INT_GET(node->hdr.count, ARCH_CONVERT)) {
- tmp = (INT_GET(node->hdr.count, ARCH_CONVERT) - oldblk->index) * (uint)sizeof(*btree);
- ovbcopy(btree, btree + 1, tmp);
+ if (oldblk->index < nodehdr.count) {
+ tmp = (nodehdr.count - oldblk->index) * (uint)sizeof(*btree);
+ memmove(&btree[oldblk->index + 1], &btree[oldblk->index], tmp);
}
- INT_SET(btree->hashval, ARCH_CONVERT, newblk->hashval);
- INT_SET(btree->before, ARCH_CONVERT, newblk->blkno);
- xfs_da_log_buf(state->args->trans, oldblk->bp,
- XFS_DA_LOGRANGE(node, btree, tmp + sizeof(*btree)));
- INT_MOD(node->hdr.count, ARCH_CONVERT, +1);
- xfs_da_log_buf(state->args->trans, oldblk->bp,
- XFS_DA_LOGRANGE(node, &node->hdr, sizeof(node->hdr)));
+ btree[oldblk->index].hashval = cpu_to_be32(newblk->hashval);
+ btree[oldblk->index].before = cpu_to_be32(newblk->blkno);
+ xfs_trans_log_buf(state->args->trans, oldblk->bp,
+ XFS_DA_LOGRANGE(node, &btree[oldblk->index],
+ tmp + sizeof(*btree)));
+
+ nodehdr.count += 1;
+ dp->d_ops->node_hdr_to_disk(node, &nodehdr);
+ xfs_trans_log_buf(state->args->trans, oldblk->bp,
+ XFS_DA_LOGRANGE(node, &node->hdr, dp->d_ops->node_hdr_size));
/*
* Copy the last hash value from the oldblk to propagate upwards.
*/
- oldblk->hashval = INT_GET(node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
+ oldblk->hashval = be32_to_cpu(btree[nodehdr.count - 1].hashval);
}
/*========================================================================
* possibly deallocating that block, etc...
*/
int
-xfs_da_join(xfs_da_state_t *state)
+xfs_da3_join(
+ struct xfs_da_state *state)
{
- xfs_da_state_blk_t *drop_blk, *save_blk;
- int action, error;
+ struct xfs_da_state_blk *drop_blk;
+ struct xfs_da_state_blk *save_blk;
+ int action = 0;
+ int error;
+
+ trace_xfs_da_join(state->args);
- action = 0;
drop_blk = &state->path.blk[ state->path.active-1 ];
save_blk = &state->altpath.blk[ state->path.active-1 ];
ASSERT(state->path.blk[0].magic == XFS_DA_NODE_MAGIC);
ASSERT(drop_blk->magic == XFS_ATTR_LEAF_MAGIC ||
- drop_blk->magic == XFS_DIRX_LEAF_MAGIC(state->mp));
+ drop_blk->magic == XFS_DIR2_LEAFN_MAGIC);
/*
* Walk back up the tree joining/deallocating as necessary.
*/
switch (drop_blk->magic) {
case XFS_ATTR_LEAF_MAGIC:
-#ifndef __KERNEL__
- error = ENOTTY;
-#else
- error = xfs_attr_leaf_toosmall(state, &action);
-#endif
- if (error)
- return(error);
- if (action == 0)
- return(0);
-#ifdef __KERNEL__
- xfs_attr_leaf_unbalance(state, drop_blk, save_blk);
-#endif
- break;
- case XFS_DIR_LEAF_MAGIC:
- ASSERT(XFS_DIR_IS_V1(state->mp));
- error = xfs_dir_leaf_toosmall(state, &action);
+ error = xfs_attr3_leaf_toosmall(state, &action);
if (error)
- return(error);
+ return error;
if (action == 0)
- return(0);
- xfs_dir_leaf_unbalance(state, drop_blk, save_blk);
+ return 0;
+ xfs_attr3_leaf_unbalance(state, drop_blk, save_blk);
break;
case XFS_DIR2_LEAFN_MAGIC:
- ASSERT(XFS_DIR_IS_V2(state->mp));
error = xfs_dir2_leafn_toosmall(state, &action);
if (error)
return error;
* Remove the offending node, fixup hashvals,
* check for a toosmall neighbor.
*/
- xfs_da_node_remove(state, drop_blk);
- xfs_da_fixhashpath(state, &state->path);
- error = xfs_da_node_toosmall(state, &action);
+ xfs_da3_node_remove(state, drop_blk);
+ xfs_da3_fixhashpath(state, &state->path);
+ error = xfs_da3_node_toosmall(state, &action);
if (error)
- return(error);
+ return error;
if (action == 0)
return 0;
- xfs_da_node_unbalance(state, drop_blk, save_blk);
+ xfs_da3_node_unbalance(state, drop_blk, save_blk);
break;
}
- xfs_da_fixhashpath(state, &state->altpath);
- error = xfs_da_blk_unlink(state, drop_blk, save_blk);
+ xfs_da3_fixhashpath(state, &state->altpath);
+ error = xfs_da3_blk_unlink(state, drop_blk, save_blk);
xfs_da_state_kill_altpath(state);
if (error)
- return(error);
+ return error;
error = xfs_da_shrink_inode(state->args, drop_blk->blkno,
drop_blk->bp);
drop_blk->bp = NULL;
if (error)
- return(error);
+ return error;
}
/*
* We joined all the way to the top. If it turns out that
* we only have one entry in the root, make the child block
* the new root.
*/
- xfs_da_node_remove(state, drop_blk);
- xfs_da_fixhashpath(state, &state->path);
- error = xfs_da_root_join(state, &state->path.blk[0]);
- return(error);
+ xfs_da3_node_remove(state, drop_blk);
+ xfs_da3_fixhashpath(state, &state->path);
+ error = xfs_da3_root_join(state, &state->path.blk[0]);
+ return error;
+}
+
+#ifdef DEBUG
+static void
+xfs_da_blkinfo_onlychild_validate(struct xfs_da_blkinfo *blkinfo, __u16 level)
+{
+ __be16 magic = blkinfo->magic;
+
+ if (level == 1) {
+ ASSERT(magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
+ magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC) ||
+ magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC) ||
+ magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC));
+ } else {
+ ASSERT(magic == cpu_to_be16(XFS_DA_NODE_MAGIC) ||
+ magic == cpu_to_be16(XFS_DA3_NODE_MAGIC));
+ }
+ ASSERT(!blkinfo->forw);
+ ASSERT(!blkinfo->back);
}
+#else /* !DEBUG */
+#define xfs_da_blkinfo_onlychild_validate(blkinfo, level)
+#endif /* !DEBUG */
/*
* We have only one entry in the root. Copy the only remaining child of
* the old root to block 0 as the new root node.
*/
STATIC int
-xfs_da_root_join(xfs_da_state_t *state, xfs_da_state_blk_t *root_blk)
+xfs_da3_root_join(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *root_blk)
{
- xfs_da_intnode_t *oldroot;
- /* REFERENCED */
- xfs_da_blkinfo_t *blkinfo;
- xfs_da_args_t *args;
- xfs_dablk_t child;
- xfs_dabuf_t *bp;
- int error;
+ struct xfs_da_intnode *oldroot;
+ struct xfs_da_args *args;
+ xfs_dablk_t child;
+ struct xfs_buf *bp;
+ struct xfs_da3_icnode_hdr oldroothdr;
+ struct xfs_da_node_entry *btree;
+ int error;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_root_join(state->args);
- args = state->args;
- ASSERT(args != NULL);
ASSERT(root_blk->magic == XFS_DA_NODE_MAGIC);
- oldroot = root_blk->bp->data;
- ASSERT(INT_GET(oldroot->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- ASSERT(INT_ISZERO(oldroot->hdr.info.forw, ARCH_CONVERT));
- ASSERT(INT_ISZERO(oldroot->hdr.info.back, ARCH_CONVERT));
+
+ args = state->args;
+ oldroot = root_blk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&oldroothdr, oldroot);
+ ASSERT(oldroothdr.forw == 0);
+ ASSERT(oldroothdr.back == 0);
/*
* If the root has more than one child, then don't do anything.
*/
- if (INT_GET(oldroot->hdr.count, ARCH_CONVERT) > 1)
- return(0);
+ if (oldroothdr.count > 1)
+ return 0;
/*
* Read in the (only) child block, then copy those bytes into
* the root block's buffer and free the original child block.
*/
- child = INT_GET(oldroot->btree[ 0 ].before, ARCH_CONVERT);
+ btree = dp->d_ops->node_tree_p(oldroot);
+ child = be32_to_cpu(btree[0].before);
ASSERT(child != 0);
- error = xfs_da_read_buf(args->trans, args->dp, child, -1, &bp,
+ error = xfs_da3_node_read(args->trans, dp, child, -1, &bp,
args->whichfork);
if (error)
- return(error);
- ASSERT(bp != NULL);
- blkinfo = bp->data;
- if (INT_GET(oldroot->hdr.level, ARCH_CONVERT) == 1) {
- ASSERT(INT_GET(blkinfo->magic, ARCH_CONVERT) == XFS_DIRX_LEAF_MAGIC(state->mp) ||
- INT_GET(blkinfo->magic, ARCH_CONVERT) == XFS_ATTR_LEAF_MAGIC);
- } else {
- ASSERT(INT_GET(blkinfo->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- }
- ASSERT(INT_GET(blkinfo->forw, ARCH_CONVERT) == 0);
- ASSERT(INT_GET(blkinfo->back, ARCH_CONVERT) == 0);
- bcopy(bp->data, root_blk->bp->data, state->blocksize);
- xfs_da_log_buf(args->trans, root_blk->bp, 0, state->blocksize - 1);
+ return error;
+ xfs_da_blkinfo_onlychild_validate(bp->b_addr, oldroothdr.level);
+
+ /*
+ * This could be copying a leaf back into the root block in the case of
+ * there only being a single leaf block left in the tree. Hence we have
+ * to update the b_ops pointer as well to match the buffer type change
+ * that could occur. For dir3 blocks we also need to update the block
+ * number in the buffer header.
+ */
+ memcpy(root_blk->bp->b_addr, bp->b_addr, args->geo->blksize);
+ root_blk->bp->b_ops = bp->b_ops;
+ xfs_trans_buf_copy_type(root_blk->bp, bp);
+ if (oldroothdr.magic == XFS_DA3_NODE_MAGIC) {
+ struct xfs_da3_blkinfo *da3 = root_blk->bp->b_addr;
+ da3->blkno = cpu_to_be64(root_blk->bp->b_bn);
+ }
+ xfs_trans_log_buf(args->trans, root_blk->bp, 0,
+ args->geo->blksize - 1);
error = xfs_da_shrink_inode(args, child, bp);
- return(error);
+ return error;
}
/*
* If nothing can be done, return 0.
*/
STATIC int
-xfs_da_node_toosmall(xfs_da_state_t *state, int *action)
+xfs_da3_node_toosmall(
+ struct xfs_da_state *state,
+ int *action)
{
- xfs_da_intnode_t *node;
- xfs_da_state_blk_t *blk;
- xfs_da_blkinfo_t *info;
- int count, forward, error, retval, i;
- xfs_dablk_t blkno;
- xfs_dabuf_t *bp;
+ struct xfs_da_intnode *node;
+ struct xfs_da_state_blk *blk;
+ struct xfs_da_blkinfo *info;
+ xfs_dablk_t blkno;
+ struct xfs_buf *bp;
+ struct xfs_da3_icnode_hdr nodehdr;
+ int count;
+ int forward;
+ int error;
+ int retval;
+ int i;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_node_toosmall(state->args);
/*
* Check for the degenerate case of the block being over 50% full.
* to coalesce with a sibling.
*/
blk = &state->path.blk[ state->path.active-1 ];
- info = blk->bp->data;
- ASSERT(INT_GET(info->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
+ info = blk->bp->b_addr;
node = (xfs_da_intnode_t *)info;
- count = INT_GET(node->hdr.count, ARCH_CONVERT);
- if (count > (XFS_DA_NODE_ENTRIES(state->mp) >> 1)) {
- *action = 0; /* blk over 50%, dont try to join */
- return(0); /* blk over 50%, dont try to join */
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ if (nodehdr.count > (state->args->geo->node_ents >> 1)) {
+ *action = 0; /* blk over 50%, don't try to join */
+ return 0; /* blk over 50%, don't try to join */
}
/*
* Check for the degenerate case of the block being empty.
* If the block is empty, we'll simply delete it, no need to
- * coalesce it with a sibling block. We choose (aribtrarily)
+ * coalesce it with a sibling block. We choose (arbitrarily)
* to merge with the forward block unless it is NULL.
*/
- if (count == 0) {
+ if (nodehdr.count == 0) {
/*
* Make altpath point to the block we want to keep and
* path point to the block we want to drop (this one).
*/
- forward = (!INT_ISZERO(info->forw, ARCH_CONVERT));
- bcopy(&state->path, &state->altpath, sizeof(state->path));
- error = xfs_da_path_shift(state, &state->altpath, forward,
+ forward = (info->forw != 0);
+ memcpy(&state->altpath, &state->path, sizeof(state->path));
+ error = xfs_da3_path_shift(state, &state->altpath, forward,
0, &retval);
if (error)
- return(error);
+ return error;
if (retval) {
*action = 0;
} else {
*action = 2;
}
- return(0);
+ return 0;
}
/*
* We prefer coalescing with the lower numbered sibling so as
* to shrink a directory over time.
*/
+ count = state->args->geo->node_ents;
+ count -= state->args->geo->node_ents >> 2;
+ count -= nodehdr.count;
+
/* start with smaller blk num */
- forward = (INT_GET(info->forw, ARCH_CONVERT)
- < INT_GET(info->back, ARCH_CONVERT));
+ forward = nodehdr.forw < nodehdr.back;
for (i = 0; i < 2; forward = !forward, i++) {
+ struct xfs_da3_icnode_hdr thdr;
if (forward)
- blkno = INT_GET(info->forw, ARCH_CONVERT);
+ blkno = nodehdr.forw;
else
- blkno = INT_GET(info->back, ARCH_CONVERT);
+ blkno = nodehdr.back;
if (blkno == 0)
continue;
- error = xfs_da_read_buf(state->args->trans, state->args->dp,
+ error = xfs_da3_node_read(state->args->trans, dp,
blkno, -1, &bp, state->args->whichfork);
if (error)
- return(error);
- ASSERT(bp != NULL);
-
- node = (xfs_da_intnode_t *)info;
- count = XFS_DA_NODE_ENTRIES(state->mp);
- count -= XFS_DA_NODE_ENTRIES(state->mp) >> 2;
- count -= INT_GET(node->hdr.count, ARCH_CONVERT);
- node = bp->data;
- ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- count -= INT_GET(node->hdr.count, ARCH_CONVERT);
- xfs_da_brelse(state->args->trans, bp);
- if (count >= 0)
+ return error;
+
+ node = bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&thdr, node);
+ xfs_trans_brelse(state->args->trans, bp);
+
+ if (count - thdr.count >= 0)
break; /* fits with at least 25% to spare */
}
if (i >= 2) {
*action = 0;
- return(0);
+ return 0;
}
/*
* Make altpath point to the block we want to keep (the lower
* numbered block) and path point to the block we want to drop.
*/
- bcopy(&state->path, &state->altpath, sizeof(state->path));
+ memcpy(&state->altpath, &state->path, sizeof(state->path));
if (blkno < blk->blkno) {
- error = xfs_da_path_shift(state, &state->altpath, forward,
+ error = xfs_da3_path_shift(state, &state->altpath, forward,
0, &retval);
- if (error) {
- return(error);
- }
- if (retval) {
- *action = 0;
- return(0);
- }
} else {
- error = xfs_da_path_shift(state, &state->path, forward,
+ error = xfs_da3_path_shift(state, &state->path, forward,
0, &retval);
- if (error) {
- return(error);
- }
- if (retval) {
- *action = 0;
- return(0);
- }
+ }
+ if (error)
+ return error;
+ if (retval) {
+ *action = 0;
+ return 0;
}
*action = 1;
- return(0);
+ return 0;
}
+/*
+ * Pick up the last hashvalue from an intermediate node.
+ */
+STATIC uint
+xfs_da3_node_lasthash(
+ struct xfs_inode *dp,
+ struct xfs_buf *bp,
+ int *count)
+{
+ struct xfs_da_intnode *node;
+ struct xfs_da_node_entry *btree;
+ struct xfs_da3_icnode_hdr nodehdr;
+
+ node = bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ if (count)
+ *count = nodehdr.count;
+ if (!nodehdr.count)
+ return 0;
+ btree = dp->d_ops->node_tree_p(node);
+ return be32_to_cpu(btree[nodehdr.count - 1].hashval);
+}
/*
* Walk back up the tree adjusting hash values as necessary,
* when we stop making changes, return.
*/
void
-xfs_da_fixhashpath(xfs_da_state_t *state, xfs_da_state_path_t *path)
+xfs_da3_fixhashpath(
+ struct xfs_da_state *state,
+ struct xfs_da_state_path *path)
{
- xfs_da_state_blk_t *blk;
- xfs_da_intnode_t *node;
- xfs_da_node_entry_t *btree;
- xfs_dahash_t lasthash=0;
- int level, count;
+ struct xfs_da_state_blk *blk;
+ struct xfs_da_intnode *node;
+ struct xfs_da_node_entry *btree;
+ xfs_dahash_t lasthash=0;
+ int level;
+ int count;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_fixhashpath(state->args);
level = path->active-1;
blk = &path->blk[ level ];
switch (blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
lasthash = xfs_attr_leaf_lasthash(blk->bp, &count);
if (count == 0)
return;
break;
-#endif
- case XFS_DIR_LEAF_MAGIC:
- ASSERT(XFS_DIR_IS_V1(state->mp));
- lasthash = xfs_dir_leaf_lasthash(blk->bp, &count);
- if (count == 0)
- return;
- break;
case XFS_DIR2_LEAFN_MAGIC:
- ASSERT(XFS_DIR_IS_V2(state->mp));
- lasthash = xfs_dir2_leafn_lasthash(blk->bp, &count);
+ lasthash = xfs_dir2_leaf_lasthash(dp, blk->bp, &count);
if (count == 0)
return;
break;
case XFS_DA_NODE_MAGIC:
- lasthash = xfs_da_node_lasthash(blk->bp, &count);
+ lasthash = xfs_da3_node_lasthash(dp, blk->bp, &count);
if (count == 0)
return;
break;
}
for (blk--, level--; level >= 0; blk--, level--) {
- node = blk->bp->data;
- ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- btree = &node->btree[ blk->index ];
- if (INT_GET(btree->hashval, ARCH_CONVERT) == lasthash)
+ struct xfs_da3_icnode_hdr nodehdr;
+
+ node = blk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ btree = dp->d_ops->node_tree_p(node);
+ if (be32_to_cpu(btree[blk->index].hashval) == lasthash)
break;
blk->hashval = lasthash;
- INT_SET(btree->hashval, ARCH_CONVERT, lasthash);
- xfs_da_log_buf(state->args->trans, blk->bp,
- XFS_DA_LOGRANGE(node, btree, sizeof(*btree)));
+ btree[blk->index].hashval = cpu_to_be32(lasthash);
+ xfs_trans_log_buf(state->args->trans, blk->bp,
+ XFS_DA_LOGRANGE(node, &btree[blk->index],
+ sizeof(*btree)));
- lasthash = INT_GET(node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
+ lasthash = be32_to_cpu(btree[nodehdr.count - 1].hashval);
}
}
-
-
/*
* Remove an entry from an intermediate node.
*/
STATIC void
-xfs_da_node_remove(xfs_da_state_t *state, xfs_da_state_blk_t *drop_blk)
+xfs_da3_node_remove(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *drop_blk)
{
- xfs_da_intnode_t *node;
- xfs_da_node_entry_t *btree;
- int tmp;
-
- node = drop_blk->bp->data;
- ASSERT(drop_blk->index < INT_GET(node->hdr.count, ARCH_CONVERT));
+ struct xfs_da_intnode *node;
+ struct xfs_da3_icnode_hdr nodehdr;
+ struct xfs_da_node_entry *btree;
+ int index;
+ int tmp;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_node_remove(state->args);
+
+ node = drop_blk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ ASSERT(drop_blk->index < nodehdr.count);
ASSERT(drop_blk->index >= 0);
/*
* Copy over the offending entry, or just zero it out.
*/
- btree = &node->btree[drop_blk->index];
- if (drop_blk->index < (INT_GET(node->hdr.count, ARCH_CONVERT)-1)) {
- tmp = INT_GET(node->hdr.count, ARCH_CONVERT) - drop_blk->index - 1;
+ index = drop_blk->index;
+ btree = dp->d_ops->node_tree_p(node);
+ if (index < nodehdr.count - 1) {
+ tmp = nodehdr.count - index - 1;
tmp *= (uint)sizeof(xfs_da_node_entry_t);
- ovbcopy(btree + 1, btree, tmp);
- xfs_da_log_buf(state->args->trans, drop_blk->bp,
- XFS_DA_LOGRANGE(node, btree, tmp));
- btree = &node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ];
- }
- bzero((char *)btree, sizeof(xfs_da_node_entry_t));
- xfs_da_log_buf(state->args->trans, drop_blk->bp,
- XFS_DA_LOGRANGE(node, btree, sizeof(*btree)));
- INT_MOD(node->hdr.count, ARCH_CONVERT, -1);
- xfs_da_log_buf(state->args->trans, drop_blk->bp,
- XFS_DA_LOGRANGE(node, &node->hdr, sizeof(node->hdr)));
+ memmove(&btree[index], &btree[index + 1], tmp);
+ xfs_trans_log_buf(state->args->trans, drop_blk->bp,
+ XFS_DA_LOGRANGE(node, &btree[index], tmp));
+ index = nodehdr.count - 1;
+ }
+ memset(&btree[index], 0, sizeof(xfs_da_node_entry_t));
+ xfs_trans_log_buf(state->args->trans, drop_blk->bp,
+ XFS_DA_LOGRANGE(node, &btree[index], sizeof(btree[index])));
+ nodehdr.count -= 1;
+ dp->d_ops->node_hdr_to_disk(node, &nodehdr);
+ xfs_trans_log_buf(state->args->trans, drop_blk->bp,
+ XFS_DA_LOGRANGE(node, &node->hdr, dp->d_ops->node_hdr_size));
/*
* Copy the last hash value from the block to propagate upwards.
*/
- btree--;
- drop_blk->hashval = INT_GET(btree->hashval, ARCH_CONVERT);
+ drop_blk->hashval = be32_to_cpu(btree[index - 1].hashval);
}
/*
- * Unbalance the btree elements between two intermediate nodes,
+ * Unbalance the elements between two intermediate nodes,
* move all Btree elements from one node into another.
*/
STATIC void
-xfs_da_node_unbalance(xfs_da_state_t *state, xfs_da_state_blk_t *drop_blk,
- xfs_da_state_blk_t *save_blk)
+xfs_da3_node_unbalance(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *drop_blk,
+ struct xfs_da_state_blk *save_blk)
{
- xfs_da_intnode_t *drop_node, *save_node;
- xfs_da_node_entry_t *btree;
- int tmp;
- xfs_trans_t *tp;
-
- drop_node = drop_blk->bp->data;
- save_node = save_blk->bp->data;
- ASSERT(INT_GET(drop_node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- ASSERT(INT_GET(save_node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
+ struct xfs_da_intnode *drop_node;
+ struct xfs_da_intnode *save_node;
+ struct xfs_da_node_entry *drop_btree;
+ struct xfs_da_node_entry *save_btree;
+ struct xfs_da3_icnode_hdr drop_hdr;
+ struct xfs_da3_icnode_hdr save_hdr;
+ struct xfs_trans *tp;
+ int sindex;
+ int tmp;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_node_unbalance(state->args);
+
+ drop_node = drop_blk->bp->b_addr;
+ save_node = save_blk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&drop_hdr, drop_node);
+ dp->d_ops->node_hdr_from_disk(&save_hdr, save_node);
+ drop_btree = dp->d_ops->node_tree_p(drop_node);
+ save_btree = dp->d_ops->node_tree_p(save_node);
tp = state->args->trans;
/*
* If the dying block has lower hashvals, then move all the
* elements in the remaining block up to make a hole.
*/
- if ((INT_GET(drop_node->btree[ 0 ].hashval, ARCH_CONVERT) < INT_GET(save_node->btree[ 0 ].hashval, ARCH_CONVERT)) ||
- (INT_GET(drop_node->btree[ INT_GET(drop_node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT) <
- INT_GET(save_node->btree[ INT_GET(save_node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT)))
- {
- btree = &save_node->btree[ INT_GET(drop_node->hdr.count, ARCH_CONVERT) ];
- tmp = INT_GET(save_node->hdr.count, ARCH_CONVERT) * (uint)sizeof(xfs_da_node_entry_t);
- ovbcopy(&save_node->btree[0], btree, tmp);
- btree = &save_node->btree[0];
- xfs_da_log_buf(tp, save_blk->bp,
- XFS_DA_LOGRANGE(save_node, btree,
- (INT_GET(save_node->hdr.count, ARCH_CONVERT) + INT_GET(drop_node->hdr.count, ARCH_CONVERT)) *
- sizeof(xfs_da_node_entry_t)));
+ if ((be32_to_cpu(drop_btree[0].hashval) <
+ be32_to_cpu(save_btree[0].hashval)) ||
+ (be32_to_cpu(drop_btree[drop_hdr.count - 1].hashval) <
+ be32_to_cpu(save_btree[save_hdr.count - 1].hashval))) {
+ /* XXX: check this - is memmove dst correct? */
+ tmp = save_hdr.count * sizeof(xfs_da_node_entry_t);
+ memmove(&save_btree[drop_hdr.count], &save_btree[0], tmp);
+
+ sindex = 0;
+ xfs_trans_log_buf(tp, save_blk->bp,
+ XFS_DA_LOGRANGE(save_node, &save_btree[0],
+ (save_hdr.count + drop_hdr.count) *
+ sizeof(xfs_da_node_entry_t)));
} else {
- btree = &save_node->btree[ INT_GET(save_node->hdr.count, ARCH_CONVERT) ];
- xfs_da_log_buf(tp, save_blk->bp,
- XFS_DA_LOGRANGE(save_node, btree,
- INT_GET(drop_node->hdr.count, ARCH_CONVERT) *
- sizeof(xfs_da_node_entry_t)));
+ sindex = save_hdr.count;
+ xfs_trans_log_buf(tp, save_blk->bp,
+ XFS_DA_LOGRANGE(save_node, &save_btree[sindex],
+ drop_hdr.count * sizeof(xfs_da_node_entry_t)));
}
/*
* Move all the B-tree elements from drop_blk to save_blk.
*/
- tmp = INT_GET(drop_node->hdr.count, ARCH_CONVERT) * (uint)sizeof(xfs_da_node_entry_t);
- bcopy(&drop_node->btree[0], btree, tmp);
- INT_MOD(save_node->hdr.count, ARCH_CONVERT, INT_GET(drop_node->hdr.count, ARCH_CONVERT));
+ tmp = drop_hdr.count * (uint)sizeof(xfs_da_node_entry_t);
+ memcpy(&save_btree[sindex], &drop_btree[0], tmp);
+ save_hdr.count += drop_hdr.count;
- xfs_da_log_buf(tp, save_blk->bp,
+ dp->d_ops->node_hdr_to_disk(save_node, &save_hdr);
+ xfs_trans_log_buf(tp, save_blk->bp,
XFS_DA_LOGRANGE(save_node, &save_node->hdr,
- sizeof(save_node->hdr)));
+ dp->d_ops->node_hdr_size));
/*
* Save the last hashval in the remaining block for upward propagation.
*/
- save_blk->hashval = INT_GET(save_node->btree[ INT_GET(save_node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
+ save_blk->hashval = be32_to_cpu(save_btree[save_hdr.count - 1].hashval);
}
-
/*========================================================================
* Routines used for finding things in the Btree.
*========================================================================*/
* pruned depth-first tree search.
*/
int /* error */
-xfs_da_node_lookup_int(xfs_da_state_t *state, int *result)
+xfs_da3_node_lookup_int(
+ struct xfs_da_state *state,
+ int *result)
{
- xfs_da_state_blk_t *blk;
- xfs_da_blkinfo_t *curr;
- xfs_da_intnode_t *node;
- xfs_da_node_entry_t *btree;
- xfs_dablk_t blkno;
- int probe, span, max, error, retval;
- xfs_dahash_t hashval;
- xfs_da_args_t *args;
+ struct xfs_da_state_blk *blk;
+ struct xfs_da_blkinfo *curr;
+ struct xfs_da_intnode *node;
+ struct xfs_da_node_entry *btree;
+ struct xfs_da3_icnode_hdr nodehdr;
+ struct xfs_da_args *args;
+ xfs_dablk_t blkno;
+ xfs_dahash_t hashval;
+ xfs_dahash_t btreehashval;
+ int probe;
+ int span;
+ int max;
+ int error;
+ int retval;
+ unsigned int expected_level = 0;
+ uint16_t magic;
+ struct xfs_inode *dp = state->args->dp;
args = state->args;
+
/*
* Descend thru the B-tree searching each level for the right
* node to use, until the right hashval is found.
*/
- if (args->whichfork == XFS_DATA_FORK && XFS_DIR_IS_V2(state->mp))
- blkno = state->mp->m_dirleafblk;
- else
- blkno = 0;
+ blkno = args->geo->leafblk;
for (blk = &state->path.blk[0], state->path.active = 1;
state->path.active <= XFS_DA_NODE_MAXDEPTH;
blk++, state->path.active++) {
* Read the next node down in the tree.
*/
blk->blkno = blkno;
- error = xfs_da_read_buf(state->args->trans, state->args->dp,
- blkno, -1, &blk->bp,
- state->args->whichfork);
+ error = xfs_da3_node_read(args->trans, args->dp, blkno,
+ -1, &blk->bp, args->whichfork);
if (error) {
blk->blkno = 0;
state->path.active--;
- return(error);
+ return error;
}
- ASSERT(blk->bp != NULL);
- curr = blk->bp->data;
- ASSERT(INT_GET(curr->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC ||
- INT_GET(curr->magic, ARCH_CONVERT) == XFS_DIRX_LEAF_MAGIC(state->mp) ||
- INT_GET(curr->magic, ARCH_CONVERT) == XFS_ATTR_LEAF_MAGIC);
+ curr = blk->bp->b_addr;
+ magic = be16_to_cpu(curr->magic);
+
+ if (magic == XFS_ATTR_LEAF_MAGIC ||
+ magic == XFS_ATTR3_LEAF_MAGIC) {
+ blk->magic = XFS_ATTR_LEAF_MAGIC;
+ blk->hashval = xfs_attr_leaf_lasthash(blk->bp, NULL);
+ break;
+ }
+
+ if (magic == XFS_DIR2_LEAFN_MAGIC ||
+ magic == XFS_DIR3_LEAFN_MAGIC) {
+ blk->magic = XFS_DIR2_LEAFN_MAGIC;
+ blk->hashval = xfs_dir2_leaf_lasthash(args->dp,
+ blk->bp, NULL);
+ break;
+ }
+
+ if (magic != XFS_DA_NODE_MAGIC && magic != XFS_DA3_NODE_MAGIC)
+ return -EFSCORRUPTED;
+
+ blk->magic = XFS_DA_NODE_MAGIC;
/*
* Search an intermediate node for a match.
*/
- blk->magic = INT_GET(curr->magic, ARCH_CONVERT);
- if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC) {
- node = blk->bp->data;
- blk->hashval = INT_GET(node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
-
- /*
- * Binary search. (note: small blocks will skip loop)
- */
- max = INT_GET(node->hdr.count, ARCH_CONVERT);
- probe = span = max / 2;
- hashval = state->args->hashval;
- for (btree = &node->btree[probe]; span > 4;
- btree = &node->btree[probe]) {
- span /= 2;
- if (INT_GET(btree->hashval, ARCH_CONVERT) < hashval)
- probe += span;
- else if (INT_GET(btree->hashval, ARCH_CONVERT) > hashval)
- probe -= span;
- else
- break;
- }
- ASSERT((probe >= 0) && (probe < max));
- ASSERT((span <= 4) || (INT_GET(btree->hashval, ARCH_CONVERT) == hashval));
+ node = blk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ btree = dp->d_ops->node_tree_p(node);
+
+ /* Tree taller than we can handle; bail out! */
+ if (nodehdr.level >= XFS_DA_NODE_MAXDEPTH)
+ return -EFSCORRUPTED;
+
+ /* Check the level from the root. */
+ if (blkno == args->geo->leafblk)
+ expected_level = nodehdr.level - 1;
+ else if (expected_level != nodehdr.level)
+ return -EFSCORRUPTED;
+ else
+ expected_level--;
- /*
- * Since we may have duplicate hashval's, find the first
- * matching hashval in the node.
- */
- while ((probe > 0) && (INT_GET(btree->hashval, ARCH_CONVERT) >= hashval)) {
- btree--;
- probe--;
- }
- while ((probe < max) && (INT_GET(btree->hashval, ARCH_CONVERT) < hashval)) {
- btree++;
- probe++;
- }
+ max = nodehdr.count;
+ blk->hashval = be32_to_cpu(btree[max - 1].hashval);
- /*
- * Pick the right block to descend on.
- */
- if (probe == max) {
- blk->index = max-1;
- blkno = INT_GET(node->btree[ max-1 ].before, ARCH_CONVERT);
- } else {
- blk->index = probe;
- blkno = INT_GET(btree->before, ARCH_CONVERT);
- }
+ /*
+ * Binary search. (note: small blocks will skip loop)
+ */
+ probe = span = max / 2;
+ hashval = args->hashval;
+ while (span > 4) {
+ span /= 2;
+ btreehashval = be32_to_cpu(btree[probe].hashval);
+ if (btreehashval < hashval)
+ probe += span;
+ else if (btreehashval > hashval)
+ probe -= span;
+ else
+ break;
}
-#ifdef __KERNEL__
- else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_ATTR_LEAF_MAGIC) {
- blk->hashval = xfs_attr_leaf_lasthash(blk->bp, NULL);
- break;
+ ASSERT((probe >= 0) && (probe < max));
+ ASSERT((span <= 4) ||
+ (be32_to_cpu(btree[probe].hashval) == hashval));
+
+ /*
+ * Since we may have duplicate hashval's, find the first
+ * matching hashval in the node.
+ */
+ while (probe > 0 &&
+ be32_to_cpu(btree[probe].hashval) >= hashval) {
+ probe--;
}
-#endif
- else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_DIR_LEAF_MAGIC) {
- blk->hashval = xfs_dir_leaf_lasthash(blk->bp, NULL);
- break;
+ while (probe < max &&
+ be32_to_cpu(btree[probe].hashval) < hashval) {
+ probe++;
}
- else if (INT_GET(curr->magic, ARCH_CONVERT) == XFS_DIR2_LEAFN_MAGIC) {
- blk->hashval = xfs_dir2_leafn_lasthash(blk->bp, NULL);
- break;
+
+ /*
+ * Pick the right block to descend on.
+ */
+ if (probe == max) {
+ blk->index = max - 1;
+ blkno = be32_to_cpu(btree[max - 1].before);
+ } else {
+ blk->index = probe;
+ blkno = be32_to_cpu(btree[probe].before);
}
+
+ /* We can't point back to the root. */
+ if (blkno == args->geo->leafblk)
+ return -EFSCORRUPTED;
}
+ if (expected_level != 0)
+ return -EFSCORRUPTED;
+
/*
* A leaf block that ends in the hashval that we are interested in
* (final hashval == search hashval) means that the next block may
* next leaf and keep searching.
*/
for (;;) {
- if (blk->magic == XFS_DIR_LEAF_MAGIC) {
- ASSERT(XFS_DIR_IS_V1(state->mp));
- retval = xfs_dir_leaf_lookup_int(blk->bp, state->args,
- &blk->index);
- } else if (blk->magic == XFS_DIR2_LEAFN_MAGIC) {
- ASSERT(XFS_DIR_IS_V2(state->mp));
- retval = xfs_dir2_leafn_lookup_int(blk->bp, state->args,
+ if (blk->magic == XFS_DIR2_LEAFN_MAGIC) {
+ retval = xfs_dir2_leafn_lookup_int(blk->bp, args,
&blk->index, state);
+ } else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
+ retval = xfs_attr3_leaf_lookup_int(blk->bp, args);
+ blk->index = args->index;
+ args->blkno = blk->blkno;
+ } else {
+ ASSERT(0);
+ return -EFSCORRUPTED;
}
-#ifdef __KERNEL__
- else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
- retval = xfs_attr_leaf_lookup_int(blk->bp, state->args);
- blk->index = state->args->index;
- state->args->blkno = blk->blkno;
- }
-#endif
- if (((retval == ENOENT) || (retval == ENOATTR)) &&
- (blk->hashval == state->args->hashval)) {
- error = xfs_da_path_shift(state, &state->path, 1, 1,
+ if (((retval == -ENOENT) || (retval == -ENOATTR)) &&
+ (blk->hashval == args->hashval)) {
+ error = xfs_da3_path_shift(state, &state->path, 1, 1,
&retval);
if (error)
- return(error);
+ return error;
if (retval == 0) {
continue;
- }
-#ifdef __KERNEL__
- else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
+ } else if (blk->magic == XFS_ATTR_LEAF_MAGIC) {
/* path_shift() gives ENOENT */
- retval = XFS_ERROR(ENOATTR);
+ retval = -ENOATTR;
}
-#endif
}
break;
}
*result = retval;
- return(0);
+ return 0;
}
-
/*========================================================================
* Utility routines.
*========================================================================*/
+/*
+ * Compare two intermediate nodes for "order".
+ */
+STATIC int
+xfs_da3_node_order(
+ struct xfs_inode *dp,
+ struct xfs_buf *node1_bp,
+ struct xfs_buf *node2_bp)
+{
+ struct xfs_da_intnode *node1;
+ struct xfs_da_intnode *node2;
+ struct xfs_da_node_entry *btree1;
+ struct xfs_da_node_entry *btree2;
+ struct xfs_da3_icnode_hdr node1hdr;
+ struct xfs_da3_icnode_hdr node2hdr;
+
+ node1 = node1_bp->b_addr;
+ node2 = node2_bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&node1hdr, node1);
+ dp->d_ops->node_hdr_from_disk(&node2hdr, node2);
+ btree1 = dp->d_ops->node_tree_p(node1);
+ btree2 = dp->d_ops->node_tree_p(node2);
+
+ if (node1hdr.count > 0 && node2hdr.count > 0 &&
+ ((be32_to_cpu(btree2[0].hashval) < be32_to_cpu(btree1[0].hashval)) ||
+ (be32_to_cpu(btree2[node2hdr.count - 1].hashval) <
+ be32_to_cpu(btree1[node1hdr.count - 1].hashval)))) {
+ return 1;
+ }
+ return 0;
+}
+
/*
* Link a new block into a doubly linked list of blocks (of whatever type).
*/
int /* error */
-xfs_da_blk_link(xfs_da_state_t *state, xfs_da_state_blk_t *old_blk,
- xfs_da_state_blk_t *new_blk)
+xfs_da3_blk_link(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *old_blk,
+ struct xfs_da_state_blk *new_blk)
{
- xfs_da_blkinfo_t *old_info, *new_info, *tmp_info;
- xfs_da_args_t *args;
- int before=0, error;
- xfs_dabuf_t *bp;
+ struct xfs_da_blkinfo *old_info;
+ struct xfs_da_blkinfo *new_info;
+ struct xfs_da_blkinfo *tmp_info;
+ struct xfs_da_args *args;
+ struct xfs_buf *bp;
+ int before = 0;
+ int error;
+ struct xfs_inode *dp = state->args->dp;
/*
* Set up environment.
*/
args = state->args;
ASSERT(args != NULL);
- old_info = old_blk->bp->data;
- new_info = new_blk->bp->data;
+ old_info = old_blk->bp->b_addr;
+ new_info = new_blk->bp->b_addr;
ASSERT(old_blk->magic == XFS_DA_NODE_MAGIC ||
- old_blk->magic == XFS_DIRX_LEAF_MAGIC(state->mp) ||
+ old_blk->magic == XFS_DIR2_LEAFN_MAGIC ||
old_blk->magic == XFS_ATTR_LEAF_MAGIC);
- ASSERT(old_blk->magic == INT_GET(old_info->magic, ARCH_CONVERT));
- ASSERT(new_blk->magic == INT_GET(new_info->magic, ARCH_CONVERT));
- ASSERT(old_blk->magic == new_blk->magic);
switch (old_blk->magic) {
-#ifdef __KERNEL__
case XFS_ATTR_LEAF_MAGIC:
before = xfs_attr_leaf_order(old_blk->bp, new_blk->bp);
break;
-#endif
- case XFS_DIR_LEAF_MAGIC:
- ASSERT(XFS_DIR_IS_V1(state->mp));
- before = xfs_dir_leaf_order(old_blk->bp, new_blk->bp);
- break;
case XFS_DIR2_LEAFN_MAGIC:
- ASSERT(XFS_DIR_IS_V2(state->mp));
- before = xfs_dir2_leafn_order(old_blk->bp, new_blk->bp);
+ before = xfs_dir2_leafn_order(dp, old_blk->bp, new_blk->bp);
break;
case XFS_DA_NODE_MAGIC:
- before = xfs_da_node_order(old_blk->bp, new_blk->bp);
+ before = xfs_da3_node_order(dp, old_blk->bp, new_blk->bp);
break;
}
/*
* Link new block in before existing block.
*/
- INT_SET(new_info->forw, ARCH_CONVERT, old_blk->blkno);
- new_info->back = old_info->back; /* INT_: direct copy */
- if (INT_GET(old_info->back, ARCH_CONVERT)) {
- error = xfs_da_read_buf(args->trans, args->dp,
- INT_GET(old_info->back,
- ARCH_CONVERT), -1, &bp,
- args->whichfork);
+ trace_xfs_da_link_before(args);
+ new_info->forw = cpu_to_be32(old_blk->blkno);
+ new_info->back = old_info->back;
+ if (old_info->back) {
+ error = xfs_da3_node_read(args->trans, dp,
+ be32_to_cpu(old_info->back),
+ -1, &bp, args->whichfork);
if (error)
- return(error);
+ return error;
ASSERT(bp != NULL);
- tmp_info = bp->data;
- ASSERT(INT_GET(tmp_info->magic, ARCH_CONVERT) == INT_GET(old_info->magic, ARCH_CONVERT));
- ASSERT(INT_GET(tmp_info->forw, ARCH_CONVERT) == old_blk->blkno);
- INT_SET(tmp_info->forw, ARCH_CONVERT, new_blk->blkno);
- xfs_da_log_buf(args->trans, bp, 0, sizeof(*tmp_info)-1);
- xfs_da_buf_done(bp);
+ tmp_info = bp->b_addr;
+ ASSERT(tmp_info->magic == old_info->magic);
+ ASSERT(be32_to_cpu(tmp_info->forw) == old_blk->blkno);
+ tmp_info->forw = cpu_to_be32(new_blk->blkno);
+ xfs_trans_log_buf(args->trans, bp, 0, sizeof(*tmp_info)-1);
}
- INT_SET(old_info->back, ARCH_CONVERT, new_blk->blkno);
+ old_info->back = cpu_to_be32(new_blk->blkno);
} else {
/*
* Link new block in after existing block.
*/
- new_info->forw = old_info->forw; /* INT_: direct copy */
- INT_SET(new_info->back, ARCH_CONVERT, old_blk->blkno);
- if (INT_GET(old_info->forw, ARCH_CONVERT)) {
- error = xfs_da_read_buf(args->trans, args->dp,
- INT_GET(old_info->forw, ARCH_CONVERT), -1, &bp,
- args->whichfork);
+ trace_xfs_da_link_after(args);
+ new_info->forw = old_info->forw;
+ new_info->back = cpu_to_be32(old_blk->blkno);
+ if (old_info->forw) {
+ error = xfs_da3_node_read(args->trans, dp,
+ be32_to_cpu(old_info->forw),
+ -1, &bp, args->whichfork);
if (error)
- return(error);
+ return error;
ASSERT(bp != NULL);
- tmp_info = bp->data;
- ASSERT(INT_GET(tmp_info->magic, ARCH_CONVERT)
- == INT_GET(old_info->magic, ARCH_CONVERT));
- ASSERT(INT_GET(tmp_info->back, ARCH_CONVERT)
- == old_blk->blkno);
- INT_SET(tmp_info->back, ARCH_CONVERT, new_blk->blkno);
- xfs_da_log_buf(args->trans, bp, 0, sizeof(*tmp_info)-1);
- xfs_da_buf_done(bp);
+ tmp_info = bp->b_addr;
+ ASSERT(tmp_info->magic == old_info->magic);
+ ASSERT(be32_to_cpu(tmp_info->back) == old_blk->blkno);
+ tmp_info->back = cpu_to_be32(new_blk->blkno);
+ xfs_trans_log_buf(args->trans, bp, 0, sizeof(*tmp_info)-1);
}
- INT_SET(old_info->forw, ARCH_CONVERT, new_blk->blkno);
- }
-
- xfs_da_log_buf(args->trans, old_blk->bp, 0, sizeof(*tmp_info) - 1);
- xfs_da_log_buf(args->trans, new_blk->bp, 0, sizeof(*tmp_info) - 1);
- return(0);
-}
-
-
-/*
- * Compare two intermediate nodes for "order".
- */
-STATIC int
-xfs_da_node_order(xfs_dabuf_t *node1_bp, xfs_dabuf_t *node2_bp)
-{
- xfs_da_intnode_t *node1, *node2;
-
- node1 = node1_bp->data;
- node2 = node2_bp->data;
- ASSERT((INT_GET(node1->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC) &&
- (INT_GET(node2->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC));
- if ((INT_GET(node1->hdr.count, ARCH_CONVERT) > 0) && (INT_GET(node2->hdr.count, ARCH_CONVERT) > 0) &&
- ((INT_GET(node2->btree[ 0 ].hashval, ARCH_CONVERT) <
- INT_GET(node1->btree[ 0 ].hashval, ARCH_CONVERT)) ||
- (INT_GET(node2->btree[ INT_GET(node2->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT) <
- INT_GET(node1->btree[ INT_GET(node1->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT)))) {
- return(1);
+ old_info->forw = cpu_to_be32(new_blk->blkno);
}
- return(0);
-}
-
-
-/*
- * Pick up the last hashvalue from an intermediate node.
- */
-STATIC uint
-xfs_da_node_lasthash(xfs_dabuf_t *bp, int *count)
-{
- xfs_da_intnode_t *node;
- node = bp->data;
- ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- if (count)
- *count = INT_GET(node->hdr.count, ARCH_CONVERT);
- if (INT_GET(node->hdr.count, ARCH_CONVERT) == 0)
- return(0);
- return(INT_GET(node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT));
+ xfs_trans_log_buf(args->trans, old_blk->bp, 0, sizeof(*tmp_info) - 1);
+ xfs_trans_log_buf(args->trans, new_blk->bp, 0, sizeof(*tmp_info) - 1);
+ return 0;
}
/*
* Unlink a block from a doubly linked list of blocks.
*/
-int /* error */
-xfs_da_blk_unlink(xfs_da_state_t *state, xfs_da_state_blk_t *drop_blk,
- xfs_da_state_blk_t *save_blk)
+STATIC int /* error */
+xfs_da3_blk_unlink(
+ struct xfs_da_state *state,
+ struct xfs_da_state_blk *drop_blk,
+ struct xfs_da_state_blk *save_blk)
{
- xfs_da_blkinfo_t *drop_info, *save_info, *tmp_info;
- xfs_da_args_t *args;
- xfs_dabuf_t *bp;
- int error;
+ struct xfs_da_blkinfo *drop_info;
+ struct xfs_da_blkinfo *save_info;
+ struct xfs_da_blkinfo *tmp_info;
+ struct xfs_da_args *args;
+ struct xfs_buf *bp;
+ int error;
/*
* Set up environment.
*/
args = state->args;
ASSERT(args != NULL);
- save_info = save_blk->bp->data;
- drop_info = drop_blk->bp->data;
+ save_info = save_blk->bp->b_addr;
+ drop_info = drop_blk->bp->b_addr;
ASSERT(save_blk->magic == XFS_DA_NODE_MAGIC ||
- save_blk->magic == XFS_DIRX_LEAF_MAGIC(state->mp) ||
+ save_blk->magic == XFS_DIR2_LEAFN_MAGIC ||
save_blk->magic == XFS_ATTR_LEAF_MAGIC);
- ASSERT(save_blk->magic == INT_GET(save_info->magic, ARCH_CONVERT));
- ASSERT(drop_blk->magic == INT_GET(drop_info->magic, ARCH_CONVERT));
ASSERT(save_blk->magic == drop_blk->magic);
- ASSERT((INT_GET(save_info->forw, ARCH_CONVERT) == drop_blk->blkno) ||
- (INT_GET(save_info->back, ARCH_CONVERT) == drop_blk->blkno));
- ASSERT((INT_GET(drop_info->forw, ARCH_CONVERT) == save_blk->blkno) ||
- (INT_GET(drop_info->back, ARCH_CONVERT) == save_blk->blkno));
+ ASSERT((be32_to_cpu(save_info->forw) == drop_blk->blkno) ||
+ (be32_to_cpu(save_info->back) == drop_blk->blkno));
+ ASSERT((be32_to_cpu(drop_info->forw) == save_blk->blkno) ||
+ (be32_to_cpu(drop_info->back) == save_blk->blkno));
/*
* Unlink the leaf block from the doubly linked chain of leaves.
*/
- if (INT_GET(save_info->back, ARCH_CONVERT) == drop_blk->blkno) {
- save_info->back = drop_info->back; /* INT_: direct copy */
- if (INT_GET(drop_info->back, ARCH_CONVERT)) {
- error = xfs_da_read_buf(args->trans, args->dp,
- INT_GET(drop_info->back,
- ARCH_CONVERT), -1, &bp,
- args->whichfork);
+ if (be32_to_cpu(save_info->back) == drop_blk->blkno) {
+ trace_xfs_da_unlink_back(args);
+ save_info->back = drop_info->back;
+ if (drop_info->back) {
+ error = xfs_da3_node_read(args->trans, args->dp,
+ be32_to_cpu(drop_info->back),
+ -1, &bp, args->whichfork);
if (error)
- return(error);
+ return error;
ASSERT(bp != NULL);
- tmp_info = bp->data;
- ASSERT(INT_GET(tmp_info->magic, ARCH_CONVERT) == INT_GET(save_info->magic, ARCH_CONVERT));
- ASSERT(INT_GET(tmp_info->forw, ARCH_CONVERT) == drop_blk->blkno);
- INT_SET(tmp_info->forw, ARCH_CONVERT, save_blk->blkno);
- xfs_da_log_buf(args->trans, bp, 0,
+ tmp_info = bp->b_addr;
+ ASSERT(tmp_info->magic == save_info->magic);
+ ASSERT(be32_to_cpu(tmp_info->forw) == drop_blk->blkno);
+ tmp_info->forw = cpu_to_be32(save_blk->blkno);
+ xfs_trans_log_buf(args->trans, bp, 0,
sizeof(*tmp_info) - 1);
- xfs_da_buf_done(bp);
}
} else {
- save_info->forw = drop_info->forw; /* INT_: direct copy */
- if (INT_GET(drop_info->forw, ARCH_CONVERT)) {
- error = xfs_da_read_buf(args->trans, args->dp,
- INT_GET(drop_info->forw, ARCH_CONVERT), -1, &bp,
- args->whichfork);
+ trace_xfs_da_unlink_forward(args);
+ save_info->forw = drop_info->forw;
+ if (drop_info->forw) {
+ error = xfs_da3_node_read(args->trans, args->dp,
+ be32_to_cpu(drop_info->forw),
+ -1, &bp, args->whichfork);
if (error)
- return(error);
+ return error;
ASSERT(bp != NULL);
- tmp_info = bp->data;
- ASSERT(INT_GET(tmp_info->magic, ARCH_CONVERT)
- == INT_GET(save_info->magic, ARCH_CONVERT));
- ASSERT(INT_GET(tmp_info->back, ARCH_CONVERT)
- == drop_blk->blkno);
- INT_SET(tmp_info->back, ARCH_CONVERT, save_blk->blkno);
- xfs_da_log_buf(args->trans, bp, 0,
+ tmp_info = bp->b_addr;
+ ASSERT(tmp_info->magic == save_info->magic);
+ ASSERT(be32_to_cpu(tmp_info->back) == drop_blk->blkno);
+ tmp_info->back = cpu_to_be32(save_blk->blkno);
+ xfs_trans_log_buf(args->trans, bp, 0,
sizeof(*tmp_info) - 1);
- xfs_da_buf_done(bp);
}
}
- xfs_da_log_buf(args->trans, save_blk->bp, 0, sizeof(*save_info) - 1);
- return(0);
+ xfs_trans_log_buf(args->trans, save_blk->bp, 0, sizeof(*save_info) - 1);
+ return 0;
}
/*
* the new bottom and the root.
*/
int /* error */
-xfs_da_path_shift(xfs_da_state_t *state, xfs_da_state_path_t *path,
- int forward, int release, int *result)
+xfs_da3_path_shift(
+ struct xfs_da_state *state,
+ struct xfs_da_state_path *path,
+ int forward,
+ int release,
+ int *result)
{
- xfs_da_state_blk_t *blk;
- xfs_da_blkinfo_t *info;
- xfs_da_intnode_t *node;
- xfs_da_args_t *args;
- xfs_dablk_t blkno=0;
- int level, error;
+ struct xfs_da_state_blk *blk;
+ struct xfs_da_blkinfo *info;
+ struct xfs_da_intnode *node;
+ struct xfs_da_args *args;
+ struct xfs_da_node_entry *btree;
+ struct xfs_da3_icnode_hdr nodehdr;
+ struct xfs_buf *bp;
+ xfs_dablk_t blkno = 0;
+ int level;
+ int error;
+ struct xfs_inode *dp = state->args->dp;
+
+ trace_xfs_da_path_shift(state->args);
/*
* Roll up the Btree looking for the first block where our
ASSERT((path->active > 0) && (path->active < XFS_DA_NODE_MAXDEPTH));
level = (path->active-1) - 1; /* skip bottom layer in path */
for (blk = &path->blk[level]; level >= 0; blk--, level--) {
- ASSERT(blk->bp != NULL);
- node = blk->bp->data;
- ASSERT(INT_GET(node->hdr.info.magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
- if (forward && (blk->index < INT_GET(node->hdr.count, ARCH_CONVERT)-1)) {
+ node = blk->bp->b_addr;
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ btree = dp->d_ops->node_tree_p(node);
+
+ if (forward && (blk->index < nodehdr.count - 1)) {
blk->index++;
- blkno = INT_GET(node->btree[ blk->index ].before, ARCH_CONVERT);
+ blkno = be32_to_cpu(btree[blk->index].before);
break;
} else if (!forward && (blk->index > 0)) {
blk->index--;
- blkno = INT_GET(node->btree[ blk->index ].before, ARCH_CONVERT);
+ blkno = be32_to_cpu(btree[blk->index].before);
break;
}
}
if (level < 0) {
- *result = XFS_ERROR(ENOENT); /* we're out of our tree */
- ASSERT(args->oknoent);
- return(0);
+ *result = -ENOENT; /* we're out of our tree */
+ ASSERT(args->op_flags & XFS_DA_OP_OKNOENT);
+ return 0;
}
/*
*/
for (blk++, level++; level < path->active; blk++, level++) {
/*
- * Release the old block.
- * (if it's dirty, trans won't actually let go)
+ * Read the next child block into a local buffer.
*/
- if (release)
- xfs_da_brelse(args->trans, blk->bp);
+ error = xfs_da3_node_read(args->trans, dp, blkno, -1, &bp,
+ args->whichfork);
+ if (error)
+ return error;
/*
- * Read the next child block.
+ * Release the old block (if it's dirty, the trans doesn't
+ * actually let go) and swap the local buffer into the path
+ * structure. This ensures failure of the above read doesn't set
+ * a NULL buffer in an active slot in the path.
*/
+ if (release)
+ xfs_trans_brelse(args->trans, blk->bp);
blk->blkno = blkno;
- error = xfs_da_read_buf(args->trans, args->dp, blkno, -1,
- &blk->bp, args->whichfork);
- if (error)
- return(error);
- ASSERT(blk->bp != NULL);
- info = blk->bp->data;
- ASSERT(INT_GET(info->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC ||
- INT_GET(info->magic, ARCH_CONVERT) == XFS_DIRX_LEAF_MAGIC(state->mp) ||
- INT_GET(info->magic, ARCH_CONVERT) == XFS_ATTR_LEAF_MAGIC);
- blk->magic = INT_GET(info->magic, ARCH_CONVERT);
- if (INT_GET(info->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC) {
+ blk->bp = bp;
+
+ info = blk->bp->b_addr;
+ ASSERT(info->magic == cpu_to_be16(XFS_DA_NODE_MAGIC) ||
+ info->magic == cpu_to_be16(XFS_DA3_NODE_MAGIC) ||
+ info->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
+ info->magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC) ||
+ info->magic == cpu_to_be16(XFS_ATTR_LEAF_MAGIC) ||
+ info->magic == cpu_to_be16(XFS_ATTR3_LEAF_MAGIC));
+
+
+ /*
+ * Note: we flatten the magic number to a single type so we
+ * don't have to compare against crc/non-crc types elsewhere.
+ */
+ switch (be16_to_cpu(info->magic)) {
+ case XFS_DA_NODE_MAGIC:
+ case XFS_DA3_NODE_MAGIC:
+ blk->magic = XFS_DA_NODE_MAGIC;
node = (xfs_da_intnode_t *)info;
- blk->hashval = INT_GET(node->btree[ INT_GET(node->hdr.count, ARCH_CONVERT)-1 ].hashval, ARCH_CONVERT);
+ dp->d_ops->node_hdr_from_disk(&nodehdr, node);
+ btree = dp->d_ops->node_tree_p(node);
+ blk->hashval = be32_to_cpu(btree[nodehdr.count - 1].hashval);
if (forward)
blk->index = 0;
else
- blk->index = INT_GET(node->hdr.count, ARCH_CONVERT)-1;
- blkno = INT_GET(node->btree[ blk->index ].before, ARCH_CONVERT);
- } else {
+ blk->index = nodehdr.count - 1;
+ blkno = be32_to_cpu(btree[blk->index].before);
+ break;
+ case XFS_ATTR_LEAF_MAGIC:
+ case XFS_ATTR3_LEAF_MAGIC:
+ blk->magic = XFS_ATTR_LEAF_MAGIC;
ASSERT(level == path->active-1);
blk->index = 0;
- switch(blk->magic) {
-#ifdef __KERNEL__
- case XFS_ATTR_LEAF_MAGIC:
- blk->hashval = xfs_attr_leaf_lasthash(blk->bp,
- NULL);
- break;
-#endif
- case XFS_DIR_LEAF_MAGIC:
- ASSERT(XFS_DIR_IS_V1(state->mp));
- blk->hashval = xfs_dir_leaf_lasthash(blk->bp,
- NULL);
- break;
- case XFS_DIR2_LEAFN_MAGIC:
- ASSERT(XFS_DIR_IS_V2(state->mp));
- blk->hashval = xfs_dir2_leafn_lasthash(blk->bp,
- NULL);
- break;
- default:
- ASSERT(blk->magic == XFS_ATTR_LEAF_MAGIC ||
- blk->magic ==
- XFS_DIRX_LEAF_MAGIC(state->mp));
- break;
- }
+ blk->hashval = xfs_attr_leaf_lasthash(blk->bp, NULL);
+ break;
+ case XFS_DIR2_LEAFN_MAGIC:
+ case XFS_DIR3_LEAFN_MAGIC:
+ blk->magic = XFS_DIR2_LEAFN_MAGIC;
+ ASSERT(level == path->active-1);
+ blk->index = 0;
+ blk->hashval = xfs_dir2_leaf_lasthash(args->dp,
+ blk->bp, NULL);
+ break;
+ default:
+ ASSERT(0);
+ break;
}
}
*result = 0;
- return(0);
+ return 0;
}
* This is implemented with some source-level loop unrolling.
*/
xfs_dahash_t
-xfs_da_hashname(char *name, int namelen)
+xfs_da_hashname(const uint8_t *name, int namelen)
{
xfs_dahash_t hash;
-#define ROTL(x,y) (((x) << (y)) | ((x) >> (32 - (y))))
-#ifdef SLOWVERSION
- /*
- * This is the old one-byte-at-a-time version.
- */
- for (hash = 0; namelen > 0; namelen--) {
- hash = *name++ ^ ROTL(hash, 7);
- }
- return(hash);
-#else
/*
* Do four characters at a time as long as we can.
*/
- for (hash = 0; namelen >= 4; namelen -= 4, name += 4) {
+ for (hash = 0; namelen >= 4; namelen -= 4, name += 4)
hash = (name[0] << 21) ^ (name[1] << 14) ^ (name[2] << 7) ^
- (name[3] << 0) ^ ROTL(hash, 7 * 4);
- }
+ (name[3] << 0) ^ rol32(hash, 7 * 4);
+
/*
* Now do the rest of the characters.
*/
switch (namelen) {
case 3:
return (name[0] << 14) ^ (name[1] << 7) ^ (name[2] << 0) ^
- ROTL(hash, 7 * 3);
+ rol32(hash, 7 * 3);
case 2:
- return (name[0] << 7) ^ (name[1] << 0) ^ ROTL(hash, 7 * 2);
+ return (name[0] << 7) ^ (name[1] << 0) ^ rol32(hash, 7 * 2);
case 1:
- return (name[0] << 0) ^ ROTL(hash, 7 * 1);
- case 0:
+ return (name[0] << 0) ^ rol32(hash, 7 * 1);
+ default: /* case 0: */
return hash;
}
- /* NOTREACHED */
-#endif
-#undef ROTL
- return 0; /* keep gcc happy */
}
-/*
- * Add a block to the btree ahead of the file.
- * Return the new block number to the caller.
- */
+enum xfs_dacmp
+xfs_da_compname(
+ struct xfs_da_args *args,
+ const unsigned char *name,
+ int len)
+{
+ return (args->namelen == len && memcmp(args->name, name, len) == 0) ?
+ XFS_CMP_EXACT : XFS_CMP_DIFFERENT;
+}
+
+static xfs_dahash_t
+xfs_default_hashname(
+ struct xfs_name *name)
+{
+ return xfs_da_hashname(name->name, name->len);
+}
+
+const struct xfs_nameops xfs_default_nameops = {
+ .hashname = xfs_default_hashname,
+ .compname = xfs_da_compname
+};
+
int
-xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
+xfs_da_grow_inode_int(
+ struct xfs_da_args *args,
+ xfs_fileoff_t *bno,
+ int count)
{
- xfs_fileoff_t bno, b;
- xfs_bmbt_irec_t map;
- xfs_bmbt_irec_t *mapp;
- xfs_inode_t *dp;
- int nmap, error, w, count, c, got, i, mapi;
- xfs_fsize_t size;
- xfs_trans_t *tp;
- xfs_mount_t *mp;
+ struct xfs_trans *tp = args->trans;
+ struct xfs_inode *dp = args->dp;
+ int w = args->whichfork;
+ xfs_rfsblock_t nblks = dp->i_d.di_nblocks;
+ struct xfs_bmbt_irec map, *mapp;
+ int nmap, error, got, i, mapi;
- dp = args->dp;
- mp = dp->i_mount;
- w = args->whichfork;
- tp = args->trans;
- /*
- * For new directories adjust the file offset and block count.
- */
- if (w == XFS_DATA_FORK && XFS_DIR_IS_V2(mp)) {
- bno = mp->m_dirleafblk;
- count = mp->m_dirblkfsbs;
- } else {
- bno = 0;
- count = 1;
- }
/*
* Find a spot in the file space to put the new block.
*/
- if ((error = xfs_bmap_first_unused(tp, dp, count, &bno, w))) {
+ error = xfs_bmap_first_unused(tp, dp, count, bno, w);
+ if (error)
return error;
- }
- if (w == XFS_DATA_FORK && XFS_DIR_IS_V2(mp))
- ASSERT(bno >= mp->m_dirleafblk && bno < mp->m_dirfreeblk);
+
/*
* Try mapping it in one filesystem block.
*/
nmap = 1;
- ASSERT(args->firstblock != NULL);
- if ((error = xfs_bmapi(tp, dp, bno, count,
- XFS_BMAPI_AFLAG(w)|XFS_BMAPI_WRITE|XFS_BMAPI_METADATA|
- XFS_BMAPI_CONTIG,
- args->firstblock, args->total, &map, &nmap,
- args->flist))) {
+ error = xfs_bmapi_write(tp, dp, *bno, count,
+ xfs_bmapi_aflag(w)|XFS_BMAPI_METADATA|XFS_BMAPI_CONTIG,
+ args->total, &map, &nmap);
+ if (error)
return error;
- }
+
ASSERT(nmap <= 1);
if (nmap == 1) {
mapp = ↦
mapi = 1;
- }
- /*
- * If we didn't get it and the block might work if fragmented,
- * try without the CONTIG flag. Loop until we get it all.
- */
- else if (nmap == 0 && count > 1) {
+ } else if (nmap == 0 && count > 1) {
+ xfs_fileoff_t b;
+ int c;
+
+ /*
+ * If we didn't get it and the block might work if fragmented,
+ * try without the CONTIG flag. Loop until we get it all.
+ */
mapp = kmem_alloc(sizeof(*mapp) * count, KM_SLEEP);
- for (b = bno, mapi = 0; b < bno + count; ) {
- nmap = MIN(XFS_BMAP_MAX_NMAP, count);
- c = (int)(bno + count - b);
- if ((error = xfs_bmapi(tp, dp, b, c,
- XFS_BMAPI_AFLAG(w)|XFS_BMAPI_WRITE|
- XFS_BMAPI_METADATA,
- args->firstblock, args->total,
- &mapp[mapi], &nmap, args->flist))) {
- kmem_free(mapp, sizeof(*mapp) * count);
- return error;
- }
+ for (b = *bno, mapi = 0; b < *bno + count; ) {
+ nmap = min(XFS_BMAP_MAX_NMAP, count);
+ c = (int)(*bno + count - b);
+ error = xfs_bmapi_write(tp, dp, b, c,
+ xfs_bmapi_aflag(w)|XFS_BMAPI_METADATA,
+ args->total, &mapp[mapi], &nmap);
+ if (error)
+ goto out_free_map;
if (nmap < 1)
break;
mapi += nmap;
mapi = 0;
mapp = NULL;
}
+
/*
* Count the blocks we got, make sure it matches the total.
*/
for (i = 0, got = 0; i < mapi; i++)
got += mapp[i].br_blockcount;
- if (got != count || mapp[0].br_startoff != bno ||
+ if (got != count || mapp[0].br_startoff != *bno ||
mapp[mapi - 1].br_startoff + mapp[mapi - 1].br_blockcount !=
- bno + count) {
- if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * count);
- return XFS_ERROR(ENOSPC);
+ *bno + count) {
+ error = -ENOSPC;
+ goto out_free_map;
}
+
+ /* account for newly allocated blocks in reserved blocks total */
+ args->total -= dp->i_d.di_nblocks - nblks;
+
+out_free_map:
if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * count);
- *new_blkno = (xfs_dablk_t)bno;
- /*
- * For version 1 directories, adjust the file size if it changed.
- */
- if (w == XFS_DATA_FORK && XFS_DIR_IS_V1(mp)) {
- ASSERT(mapi == 1);
- if ((error = xfs_bmap_last_offset(tp, dp, &bno, w)))
- return error;
- size = XFS_FSB_TO_B(mp, bno);
- if (size != dp->i_d.di_size) {
- dp->i_d.di_size = size;
- xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
- }
- }
- return 0;
+ kmem_free(mapp);
+ return error;
}
+/*
+ * Add a block to the btree ahead of the file.
+ * Return the new block number to the caller.
+ */
+int
+xfs_da_grow_inode(
+ struct xfs_da_args *args,
+ xfs_dablk_t *new_blkno)
+{
+ xfs_fileoff_t bno;
+ int error;
+
+ trace_xfs_da_grow_inode(args);
+
+ bno = args->geo->leafblk;
+ error = xfs_da_grow_inode_int(args, &bno, args->geo->fsbcount);
+ if (!error)
+ *new_blkno = (xfs_dablk_t)bno;
+ return error;
+}
/*
* Ick. We need to always be able to remove a btree block, even
* a bmap btree split to do that.
*/
STATIC int
-xfs_da_swap_lastblock(xfs_da_args_t *args, xfs_dablk_t *dead_blknop,
- xfs_dabuf_t **dead_bufp)
+xfs_da3_swap_lastblock(
+ struct xfs_da_args *args,
+ xfs_dablk_t *dead_blknop,
+ struct xfs_buf **dead_bufp)
{
- xfs_dablk_t dead_blkno, last_blkno, sib_blkno, par_blkno;
- xfs_dabuf_t *dead_buf, *last_buf, *sib_buf, *par_buf;
- xfs_fileoff_t lastoff;
- xfs_inode_t *ip;
- xfs_trans_t *tp;
- xfs_mount_t *mp;
- int error, w, entno, level, dead_level;
- xfs_da_blkinfo_t *dead_info, *sib_info;
- xfs_da_intnode_t *par_node, *dead_node;
- xfs_dir_leafblock_t *dead_leaf;
- xfs_dir2_leaf_t *dead_leaf2;
- xfs_dahash_t dead_hash;
+ struct xfs_da_blkinfo *dead_info;
+ struct xfs_da_blkinfo *sib_info;
+ struct xfs_da_intnode *par_node;
+ struct xfs_da_intnode *dead_node;
+ struct xfs_dir2_leaf *dead_leaf2;
+ struct xfs_da_node_entry *btree;
+ struct xfs_da3_icnode_hdr par_hdr;
+ struct xfs_inode *dp;
+ struct xfs_trans *tp;
+ struct xfs_mount *mp;
+ struct xfs_buf *dead_buf;
+ struct xfs_buf *last_buf;
+ struct xfs_buf *sib_buf;
+ struct xfs_buf *par_buf;
+ xfs_dahash_t dead_hash;
+ xfs_fileoff_t lastoff;
+ xfs_dablk_t dead_blkno;
+ xfs_dablk_t last_blkno;
+ xfs_dablk_t sib_blkno;
+ xfs_dablk_t par_blkno;
+ int error;
+ int w;
+ int entno;
+ int level;
+ int dead_level;
+
+ trace_xfs_da_swap_lastblock(args);
dead_buf = *dead_bufp;
dead_blkno = *dead_blknop;
tp = args->trans;
- ip = args->dp;
+ dp = args->dp;
w = args->whichfork;
ASSERT(w == XFS_DATA_FORK);
- mp = ip->i_mount;
- if (XFS_DIR_IS_V2(mp)) {
- lastoff = mp->m_dirfreeblk;
- error = xfs_bmap_last_before(tp, ip, &lastoff, w);
- } else
- error = xfs_bmap_last_offset(tp, ip, &lastoff, w);
+ mp = dp->i_mount;
+ lastoff = args->geo->freeblk;
+ error = xfs_bmap_last_before(tp, dp, &lastoff, w);
if (error)
return error;
- if (lastoff == 0)
- return XFS_ERROR(EFSCORRUPTED);
+ if (unlikely(lastoff == 0)) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(1)", XFS_ERRLEVEL_LOW,
+ mp);
+ return -EFSCORRUPTED;
+ }
/*
* Read the last block in the btree space.
*/
- last_blkno = (xfs_dablk_t)lastoff - mp->m_dirblkfsbs;
- if ((error = xfs_da_read_buf(tp, ip, last_blkno, -1, &last_buf, w)))
+ last_blkno = (xfs_dablk_t)lastoff - args->geo->fsbcount;
+ error = xfs_da3_node_read(tp, dp, last_blkno, -1, &last_buf, w);
+ if (error)
return error;
/*
* Copy the last block into the dead buffer and log it.
*/
- bcopy(last_buf->data, dead_buf->data, mp->m_dirblksize);
- xfs_da_log_buf(tp, dead_buf, 0, mp->m_dirblksize - 1);
- dead_info = dead_buf->data;
+ memcpy(dead_buf->b_addr, last_buf->b_addr, args->geo->blksize);
+ xfs_trans_log_buf(tp, dead_buf, 0, args->geo->blksize - 1);
+ dead_info = dead_buf->b_addr;
/*
* Get values from the moved block.
*/
- if (INT_GET(dead_info->magic, ARCH_CONVERT) == XFS_DIR_LEAF_MAGIC) {
- ASSERT(XFS_DIR_IS_V1(mp));
- dead_leaf = (xfs_dir_leafblock_t *)dead_info;
- dead_level = 0;
- dead_hash =
- INT_GET(dead_leaf->entries[INT_GET(dead_leaf->hdr.count, ARCH_CONVERT) - 1].hashval, ARCH_CONVERT);
- } else if (INT_GET(dead_info->magic, ARCH_CONVERT) == XFS_DIR2_LEAFN_MAGIC) {
- ASSERT(XFS_DIR_IS_V2(mp));
+ if (dead_info->magic == cpu_to_be16(XFS_DIR2_LEAFN_MAGIC) ||
+ dead_info->magic == cpu_to_be16(XFS_DIR3_LEAFN_MAGIC)) {
+ struct xfs_dir3_icleaf_hdr leafhdr;
+ struct xfs_dir2_leaf_entry *ents;
+
dead_leaf2 = (xfs_dir2_leaf_t *)dead_info;
+ dp->d_ops->leaf_hdr_from_disk(&leafhdr, dead_leaf2);
+ ents = dp->d_ops->leaf_ents_p(dead_leaf2);
dead_level = 0;
- dead_hash = INT_GET(dead_leaf2->ents[INT_GET(dead_leaf2->hdr.count, ARCH_CONVERT) - 1].hashval, ARCH_CONVERT);
+ dead_hash = be32_to_cpu(ents[leafhdr.count - 1].hashval);
} else {
- ASSERT(INT_GET(dead_info->magic, ARCH_CONVERT) == XFS_DA_NODE_MAGIC);
+ struct xfs_da3_icnode_hdr deadhdr;
+
dead_node = (xfs_da_intnode_t *)dead_info;
- dead_level = INT_GET(dead_node->hdr.level, ARCH_CONVERT);
- dead_hash = INT_GET(dead_node->btree[INT_GET(dead_node->hdr.count, ARCH_CONVERT) - 1].hashval, ARCH_CONVERT);
+ dp->d_ops->node_hdr_from_disk(&deadhdr, dead_node);
+ btree = dp->d_ops->node_tree_p(dead_node);
+ dead_level = deadhdr.level;
+ dead_hash = be32_to_cpu(btree[deadhdr.count - 1].hashval);
}
sib_buf = par_buf = NULL;
/*
* If the moved block has a left sibling, fix up the pointers.
*/
- if ((sib_blkno = INT_GET(dead_info->back, ARCH_CONVERT))) {
- if ((error = xfs_da_read_buf(tp, ip, sib_blkno, -1, &sib_buf, w)))
+ if ((sib_blkno = be32_to_cpu(dead_info->back))) {
+ error = xfs_da3_node_read(tp, dp, sib_blkno, -1, &sib_buf, w);
+ if (error)
goto done;
- sib_info = sib_buf->data;
- if (INT_GET(sib_info->forw, ARCH_CONVERT) != last_blkno ||
- INT_GET(sib_info->magic, ARCH_CONVERT) != INT_GET(dead_info->magic, ARCH_CONVERT)) {
- error = XFS_ERROR(EFSCORRUPTED);
+ sib_info = sib_buf->b_addr;
+ if (unlikely(
+ be32_to_cpu(sib_info->forw) != last_blkno ||
+ sib_info->magic != dead_info->magic)) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(2)",
+ XFS_ERRLEVEL_LOW, mp);
+ error = -EFSCORRUPTED;
goto done;
}
- INT_SET(sib_info->forw, ARCH_CONVERT, dead_blkno);
- xfs_da_log_buf(tp, sib_buf,
+ sib_info->forw = cpu_to_be32(dead_blkno);
+ xfs_trans_log_buf(tp, sib_buf,
XFS_DA_LOGRANGE(sib_info, &sib_info->forw,
sizeof(sib_info->forw)));
- xfs_da_buf_done(sib_buf);
sib_buf = NULL;
}
/*
* If the moved block has a right sibling, fix up the pointers.
*/
- if ((sib_blkno = INT_GET(dead_info->forw, ARCH_CONVERT))) {
- if ((error = xfs_da_read_buf(tp, ip, sib_blkno, -1, &sib_buf, w)))
+ if ((sib_blkno = be32_to_cpu(dead_info->forw))) {
+ error = xfs_da3_node_read(tp, dp, sib_blkno, -1, &sib_buf, w);
+ if (error)
goto done;
- sib_info = sib_buf->data;
- if ( INT_GET(sib_info->back, ARCH_CONVERT) != last_blkno
- || INT_GET(sib_info->magic, ARCH_CONVERT)
- != INT_GET(dead_info->magic, ARCH_CONVERT)) {
- error = XFS_ERROR(EFSCORRUPTED);
+ sib_info = sib_buf->b_addr;
+ if (unlikely(
+ be32_to_cpu(sib_info->back) != last_blkno ||
+ sib_info->magic != dead_info->magic)) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(3)",
+ XFS_ERRLEVEL_LOW, mp);
+ error = -EFSCORRUPTED;
goto done;
}
- INT_SET(sib_info->back, ARCH_CONVERT, dead_blkno);
- xfs_da_log_buf(tp, sib_buf,
+ sib_info->back = cpu_to_be32(dead_blkno);
+ xfs_trans_log_buf(tp, sib_buf,
XFS_DA_LOGRANGE(sib_info, &sib_info->back,
sizeof(sib_info->back)));
- xfs_da_buf_done(sib_buf);
sib_buf = NULL;
}
- par_blkno = XFS_DIR_IS_V1(mp) ? 0 : mp->m_dirleafblk;
+ par_blkno = args->geo->leafblk;
level = -1;
/*
* Walk down the tree looking for the parent of the moved block.
*/
for (;;) {
- if ((error = xfs_da_read_buf(tp, ip, par_blkno, -1, &par_buf, w)))
+ error = xfs_da3_node_read(tp, dp, par_blkno, -1, &par_buf, w);
+ if (error)
goto done;
- par_node = par_buf->data;
- if (INT_GET(par_node->hdr.info.magic, ARCH_CONVERT) != XFS_DA_NODE_MAGIC ||
- (level >= 0 && level != INT_GET(par_node->hdr.level, ARCH_CONVERT) + 1)) {
- error = XFS_ERROR(EFSCORRUPTED);
+ par_node = par_buf->b_addr;
+ dp->d_ops->node_hdr_from_disk(&par_hdr, par_node);
+ if (level >= 0 && level != par_hdr.level + 1) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(4)",
+ XFS_ERRLEVEL_LOW, mp);
+ error = -EFSCORRUPTED;
goto done;
}
- level = INT_GET(par_node->hdr.level, ARCH_CONVERT);
+ level = par_hdr.level;
+ btree = dp->d_ops->node_tree_p(par_node);
for (entno = 0;
- entno < INT_GET(par_node->hdr.count, ARCH_CONVERT) &&
- INT_GET(par_node->btree[entno].hashval, ARCH_CONVERT) < dead_hash;
+ entno < par_hdr.count &&
+ be32_to_cpu(btree[entno].hashval) < dead_hash;
entno++)
continue;
- if (entno == INT_GET(par_node->hdr.count, ARCH_CONVERT)) {
- error = XFS_ERROR(EFSCORRUPTED);
+ if (entno == par_hdr.count) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(5)",
+ XFS_ERRLEVEL_LOW, mp);
+ error = -EFSCORRUPTED;
goto done;
}
- par_blkno = INT_GET(par_node->btree[entno].before, ARCH_CONVERT);
+ par_blkno = be32_to_cpu(btree[entno].before);
if (level == dead_level + 1)
break;
- xfs_da_brelse(tp, par_buf);
+ xfs_trans_brelse(tp, par_buf);
par_buf = NULL;
}
/*
*/
for (;;) {
for (;
- entno < INT_GET(par_node->hdr.count, ARCH_CONVERT) &&
- INT_GET(par_node->btree[entno].before, ARCH_CONVERT) != last_blkno;
+ entno < par_hdr.count &&
+ be32_to_cpu(btree[entno].before) != last_blkno;
entno++)
continue;
- if (entno < INT_GET(par_node->hdr.count, ARCH_CONVERT))
+ if (entno < par_hdr.count)
break;
- par_blkno = INT_GET(par_node->hdr.info.forw, ARCH_CONVERT);
- xfs_da_brelse(tp, par_buf);
+ par_blkno = par_hdr.forw;
+ xfs_trans_brelse(tp, par_buf);
par_buf = NULL;
- if (par_blkno == 0) {
- error = XFS_ERROR(EFSCORRUPTED);
+ if (unlikely(par_blkno == 0)) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(6)",
+ XFS_ERRLEVEL_LOW, mp);
+ error = -EFSCORRUPTED;
goto done;
}
- if ((error = xfs_da_read_buf(tp, ip, par_blkno, -1, &par_buf, w)))
+ error = xfs_da3_node_read(tp, dp, par_blkno, -1, &par_buf, w);
+ if (error)
goto done;
- par_node = par_buf->data;
- if (INT_GET(par_node->hdr.level, ARCH_CONVERT) != level ||
- INT_GET(par_node->hdr.info.magic, ARCH_CONVERT) != XFS_DA_NODE_MAGIC) {
- error = XFS_ERROR(EFSCORRUPTED);
+ par_node = par_buf->b_addr;
+ dp->d_ops->node_hdr_from_disk(&par_hdr, par_node);
+ if (par_hdr.level != level) {
+ XFS_ERROR_REPORT("xfs_da_swap_lastblock(7)",
+ XFS_ERRLEVEL_LOW, mp);
+ error = -EFSCORRUPTED;
goto done;
}
+ btree = dp->d_ops->node_tree_p(par_node);
entno = 0;
}
/*
* Update the parent entry pointing to the moved block.
*/
- INT_SET(par_node->btree[entno].before, ARCH_CONVERT, dead_blkno);
- xfs_da_log_buf(tp, par_buf,
- XFS_DA_LOGRANGE(par_node, &par_node->btree[entno].before,
- sizeof(par_node->btree[entno].before)));
- xfs_da_buf_done(par_buf);
- xfs_da_buf_done(dead_buf);
+ btree[entno].before = cpu_to_be32(dead_blkno);
+ xfs_trans_log_buf(tp, par_buf,
+ XFS_DA_LOGRANGE(par_node, &btree[entno].before,
+ sizeof(btree[entno].before)));
*dead_blknop = last_blkno;
*dead_bufp = last_buf;
return 0;
done:
if (par_buf)
- xfs_da_brelse(tp, par_buf);
+ xfs_trans_brelse(tp, par_buf);
if (sib_buf)
- xfs_da_brelse(tp, sib_buf);
- xfs_da_brelse(tp, last_buf);
+ xfs_trans_brelse(tp, sib_buf);
+ xfs_trans_brelse(tp, last_buf);
return error;
}
* Remove a btree block from a directory or attribute.
*/
int
-xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
- xfs_dabuf_t *dead_buf)
+xfs_da_shrink_inode(
+ struct xfs_da_args *args,
+ xfs_dablk_t dead_blkno,
+ struct xfs_buf *dead_buf)
{
- xfs_inode_t *dp;
- int done, error, w, count;
- xfs_fileoff_t bno;
- xfs_fsize_t size;
- xfs_trans_t *tp;
- xfs_mount_t *mp;
+ struct xfs_inode *dp;
+ int done, error, w, count;
+ struct xfs_trans *tp;
+
+ trace_xfs_da_shrink_inode(args);
dp = args->dp;
w = args->whichfork;
tp = args->trans;
- mp = dp->i_mount;
- if (w == XFS_DATA_FORK && XFS_DIR_IS_V2(mp))
- count = mp->m_dirblkfsbs;
- else
- count = 1;
+ count = args->geo->fsbcount;
for (;;) {
/*
* Remove extents. If we get ENOSPC for a dir we have to move
* the last block to the place we want to kill.
*/
- if ((error = xfs_bunmapi(tp, dp, dead_blkno, count,
- XFS_BMAPI_AFLAG(w)|XFS_BMAPI_METADATA,
- 0, args->firstblock, args->flist,
- &done)) == ENOSPC) {
+ error = xfs_bunmapi(tp, dp, dead_blkno, count,
+ xfs_bmapi_aflag(w), 0, &done);
+ if (error == -ENOSPC) {
if (w != XFS_DATA_FORK)
- goto done;
- if ((error = xfs_da_swap_lastblock(args, &dead_blkno,
- &dead_buf)))
- goto done;
- } else if (error)
- goto done;
- else
+ break;
+ error = xfs_da3_swap_lastblock(args, &dead_blkno,
+ &dead_buf);
+ if (error)
+ break;
+ } else {
break;
- }
- ASSERT(done);
- xfs_da_binval(tp, dead_buf);
- /*
- * Adjust the directory size for version 1.
- */
- if (w == XFS_DATA_FORK && XFS_DIR_IS_V1(mp)) {
- if ((error = xfs_bmap_last_offset(tp, dp, &bno, w)))
- return error;
- size = XFS_FSB_TO_B(dp->i_mount, bno);
- if (size != dp->i_d.di_size) {
- dp->i_d.di_size = size;
- xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
}
}
- return 0;
-done:
- xfs_da_binval(tp, dead_buf);
+ xfs_trans_binval(tp, dead_buf);
return error;
}
}
/*
- * Make a dabuf.
- * Used for get_buf, read_buf, read_bufr, and reada_buf.
+ * Convert a struct xfs_bmbt_irec to a struct xfs_buf_map.
+ *
+ * For the single map case, it is assumed that the caller has provided a pointer
+ * to a valid xfs_buf_map. For the multiple map case, this function will
+ * allocate the xfs_buf_map to hold all the maps and replace the caller's single
+ * map pointer with the allocated map.
*/
-STATIC int
-xfs_da_do_buf(
- xfs_trans_t *trans,
- xfs_inode_t *dp,
- xfs_dablk_t bno,
- xfs_daddr_t *mappedbnop,
- xfs_dabuf_t **bpp,
- int whichfork,
- int caller,
- inst_t *ra)
+static int
+xfs_buf_map_from_irec(
+ struct xfs_mount *mp,
+ struct xfs_buf_map **mapp,
+ int *nmaps,
+ struct xfs_bmbt_irec *irecs,
+ int nirecs)
{
- xfs_buf_t *bp = 0;
- xfs_buf_t **bplist;
- int error=0;
- int i;
- xfs_bmbt_irec_t map;
- xfs_bmbt_irec_t *mapp;
- xfs_daddr_t mappedbno;
- xfs_mount_t *mp;
- int nbplist=0;
- int nfsb;
- int nmap;
- int mem_flags = trans ? KM_SLEEP : KM_SLEEP_IO;
- xfs_dabuf_t *rbp;
+ struct xfs_buf_map *map;
+ int i;
- mp = dp->i_mount;
- if (whichfork == XFS_DATA_FORK && XFS_DIR_IS_V2(mp))
- nfsb = mp->m_dirblkfsbs;
+ ASSERT(*nmaps == 1);
+ ASSERT(nirecs >= 1);
+
+ if (nirecs > 1) {
+ map = kmem_zalloc(nirecs * sizeof(struct xfs_buf_map),
+ KM_SLEEP | KM_NOFS);
+ if (!map)
+ return -ENOMEM;
+ *mapp = map;
+ }
+
+ *nmaps = nirecs;
+ map = *mapp;
+ for (i = 0; i < *nmaps; i++) {
+ ASSERT(irecs[i].br_startblock != DELAYSTARTBLOCK &&
+ irecs[i].br_startblock != HOLESTARTBLOCK);
+ map[i].bm_bn = XFS_FSB_TO_DADDR(mp, irecs[i].br_startblock);
+ map[i].bm_len = XFS_FSB_TO_BB(mp, irecs[i].br_blockcount);
+ }
+ return 0;
+}
+
+/*
+ * Map the block we are given ready for reading. There are three possible return
+ * values:
+ * -1 - will be returned if we land in a hole and mappedbno == -2 so the
+ * caller knows not to execute a subsequent read.
+ * 0 - if we mapped the block successfully
+ * >0 - positive error number if there was an error.
+ */
+static int
+xfs_dabuf_map(
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
+ xfs_daddr_t mappedbno,
+ int whichfork,
+ struct xfs_buf_map **map,
+ int *nmaps)
+{
+ struct xfs_mount *mp = dp->i_mount;
+ int nfsb;
+ int error = 0;
+ struct xfs_bmbt_irec irec;
+ struct xfs_bmbt_irec *irecs = &irec;
+ int nirecs;
+
+ ASSERT(map && *map);
+ ASSERT(*nmaps == 1);
+
+ if (whichfork == XFS_DATA_FORK)
+ nfsb = mp->m_dir_geo->fsbcount;
else
- nfsb = 1;
- mappedbno = *mappedbnop;
+ nfsb = mp->m_attr_geo->fsbcount;
+
/*
* Caller doesn't have a mapping. -2 means don't complain
* if we land in a hole.
/*
* Optimize the one-block case.
*/
- if (nfsb == 1) {
- xfs_fsblock_t fsb;
+ if (nfsb != 1)
+ irecs = kmem_zalloc(sizeof(irec) * nfsb,
+ KM_SLEEP | KM_NOFS);
- if ((error =
- xfs_bmapi_single(trans, dp, whichfork, &fsb,
- (xfs_fileoff_t)bno))) {
- return error;
- }
- mapp = ↦
- if (fsb == NULLFSBLOCK) {
- nmap = 0;
- } else {
- map.br_startblock = fsb;
- map.br_startoff = (xfs_fileoff_t)bno;
- map.br_blockcount = 1;
- nmap = 1;
- }
- } else {
- xfs_fsblock_t firstblock;
-
- firstblock = NULLFSBLOCK;
- mapp = kmem_alloc(sizeof(*mapp) * nfsb, mem_flags);
- nmap = nfsb;
- if ((error = xfs_bmapi(trans, dp, (xfs_fileoff_t)bno,
- nfsb,
- XFS_BMAPI_METADATA |
- XFS_BMAPI_AFLAG(whichfork),
- &firstblock, 0, mapp, &nmap, NULL)))
- goto exit0;
- }
+ nirecs = nfsb;
+ error = xfs_bmapi_read(dp, (xfs_fileoff_t)bno, nfsb, irecs,
+ &nirecs, xfs_bmapi_aflag(whichfork));
+ if (error)
+ goto out;
} else {
- map.br_startblock = XFS_DADDR_TO_FSB(mp, mappedbno);
- map.br_startoff = (xfs_fileoff_t)bno;
- map.br_blockcount = nfsb;
- mapp = ↦
- nmap = 1;
- }
- if (!xfs_da_map_covers_blocks(nmap, mapp, bno, nfsb)) {
- error = mappedbno == -2 ? 0 : XFS_ERROR(EFSCORRUPTED);
- goto exit0;
- }
- if (caller != 3 && nmap > 1) {
- bplist = kmem_alloc(sizeof(*bplist) * nmap, mem_flags);
- nbplist = 0;
- } else
- bplist = NULL;
- /*
- * Turn the mapping(s) into buffer(s).
- */
- for (i = 0; i < nmap; i++) {
- int nmapped;
-
- mappedbno = XFS_FSB_TO_DADDR(mp, mapp[i].br_startblock);
- if (i == 0)
- *mappedbnop = mappedbno;
- nmapped = (int)XFS_FSB_TO_BB(mp, mapp[i].br_blockcount);
- switch (caller) {
- case 0:
- bp = xfs_trans_get_buf(trans, mp->m_ddev_targp,
- mappedbno, nmapped, 0);
- error = bp ? XFS_BUF_GETERROR(bp) : XFS_ERROR(EIO);
- break;
- case 1:
-#ifndef __KERNEL__
- case 2:
-#endif
- bp = NULL;
- error = xfs_trans_read_buf(mp, trans, mp->m_ddev_targp,
- mappedbno, nmapped, 0, &bp);
- break;
-#ifdef __KERNEL__
- case 3:
- xfs_baread(mp->m_ddev_targp, mappedbno, nmapped);
- error = 0;
- bp = NULL;
- break;
-#endif
- }
- if (error) {
- if (bp)
- xfs_trans_brelse(trans, bp);
- goto exit1;
- }
- if (!bp)
- continue;
- if (caller == 1) {
- if (whichfork == XFS_ATTR_FORK) {
- XFS_BUF_SET_VTYPE_REF(bp, B_FS_ATTR_BTREE,
- XFS_ATTR_BTREE_REF);
- } else {
- XFS_BUF_SET_VTYPE_REF(bp, B_FS_DIR_BTREE,
- XFS_DIR_BTREE_REF);
+ irecs->br_startblock = XFS_DADDR_TO_FSB(mp, mappedbno);
+ irecs->br_startoff = (xfs_fileoff_t)bno;
+ irecs->br_blockcount = nfsb;
+ irecs->br_state = 0;
+ nirecs = 1;
+ }
+
+ if (!xfs_da_map_covers_blocks(nirecs, irecs, bno, nfsb)) {
+ error = mappedbno == -2 ? -1 : -EFSCORRUPTED;
+ if (unlikely(error == -EFSCORRUPTED)) {
+ if (xfs_error_level >= XFS_ERRLEVEL_LOW) {
+ int i;
+ xfs_alert(mp, "%s: bno %lld dir: inode %lld",
+ __func__, (long long)bno,
+ (long long)dp->i_ino);
+ for (i = 0; i < *nmaps; i++) {
+ xfs_alert(mp,
+"[%02d] br_startoff %lld br_startblock %lld br_blockcount %lld br_state %d",
+ i,
+ (long long)irecs[i].br_startoff,
+ (long long)irecs[i].br_startblock,
+ (long long)irecs[i].br_blockcount,
+ irecs[i].br_state);
+ }
}
+ XFS_ERROR_REPORT("xfs_da_do_buf(1)",
+ XFS_ERRLEVEL_LOW, mp);
}
- if (bplist) {
- bplist[nbplist++] = bp;
- }
- }
- /*
- * Build a dabuf structure.
- */
- if (bplist) {
- rbp = xfs_da_buf_make(nbplist, bplist, ra, mem_flags);
- } else if (bp)
- rbp = xfs_da_buf_make(1, &bp, ra, mem_flags);
- else
- rbp = NULL;
- /*
- * For read_buf, check the magic number.
- */
- if (caller == 1) {
- xfs_dir2_data_t *data;
- xfs_dir2_free_t *free;
- xfs_da_blkinfo_t *info;
-
- info = rbp->data;
- data = rbp->data;
- free = rbp->data;
- if (XFS_TEST_ERROR((INT_GET(info->magic, ARCH_CONVERT) != XFS_DA_NODE_MAGIC) &&
- (INT_GET(info->magic, ARCH_CONVERT) != XFS_DIR_LEAF_MAGIC) &&
- (INT_GET(info->magic, ARCH_CONVERT) != XFS_ATTR_LEAF_MAGIC) &&
- (INT_GET(info->magic, ARCH_CONVERT) != XFS_DIR2_LEAF1_MAGIC) &&
- (INT_GET(info->magic, ARCH_CONVERT) != XFS_DIR2_LEAFN_MAGIC) &&
- (INT_GET(data->hdr.magic, ARCH_CONVERT) != XFS_DIR2_BLOCK_MAGIC) &&
- (INT_GET(data->hdr.magic, ARCH_CONVERT) != XFS_DIR2_DATA_MAGIC) &&
- (INT_GET(free->hdr.magic, ARCH_CONVERT) != XFS_DIR2_FREE_MAGIC),
- mp, XFS_ERRTAG_DA_READ_BUF,
- XFS_RANDOM_DA_READ_BUF)) {
- xfs_buftrace("DA READ ERROR", rbp->bps[0]);
- error = XFS_ERROR(EFSCORRUPTED);
- xfs_da_brelse(trans, rbp);
- nbplist = 0;
- goto exit1;
- }
+ goto out;
}
- if (bplist) {
- kmem_free(bplist, sizeof(*bplist) * nmap);
- }
- if (mapp != &map) {
- kmem_free(mapp, sizeof(*mapp) * nfsb);
- }
- if (bpp)
- *bpp = rbp;
- return 0;
-exit1:
- if (bplist) {
- for (i = 0; i < nbplist; i++)
- xfs_trans_brelse(trans, bplist[i]);
- kmem_free(bplist, sizeof(*bplist) * nmap);
- }
-exit0:
- if (mapp != &map)
- kmem_free(mapp, sizeof(*mapp) * nfsb);
- if (bpp)
- *bpp = NULL;
+ error = xfs_buf_map_from_irec(mp, map, nmaps, irecs, nirecs);
+out:
+ if (irecs != &irec)
+ kmem_free(irecs);
return error;
}
*/
int
xfs_da_get_buf(
- xfs_trans_t *trans,
- xfs_inode_t *dp,
- xfs_dablk_t bno,
- xfs_daddr_t mappedbno,
- xfs_dabuf_t **bpp,
- int whichfork)
-{
- return xfs_da_do_buf(trans, dp, bno, &mappedbno, bpp, whichfork, 0,
- (inst_t *)__return_address);
-}
-
-/*
- * Get a buffer for the dir/attr block, fill in the contents.
- */
-int
-xfs_da_read_buf(
- xfs_trans_t *trans,
- xfs_inode_t *dp,
- xfs_dablk_t bno,
+ struct xfs_trans *trans,
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
xfs_daddr_t mappedbno,
- xfs_dabuf_t **bpp,
- int whichfork)
-{
- return xfs_da_do_buf(trans, dp, bno, &mappedbno, bpp, whichfork, 1,
- (inst_t *)__return_address);
-}
-
-/*
- * Calculate the number of bits needed to hold i different values.
- */
-uint
-xfs_da_log2_roundup(uint i)
+ struct xfs_buf **bpp,
+ int whichfork)
{
- uint rval;
-
- for (rval = 0; rval < NBBY * sizeof(i); rval++) {
- if ((1 << rval) >= i)
- break;
+ struct xfs_buf *bp;
+ struct xfs_buf_map map;
+ struct xfs_buf_map *mapp;
+ int nmap;
+ int error;
+
+ *bpp = NULL;
+ mapp = ↦
+ nmap = 1;
+ error = xfs_dabuf_map(dp, bno, mappedbno, whichfork,
+ &mapp, &nmap);
+ if (error) {
+ /* mapping a hole is not an error, but we don't continue */
+ if (error == -1)
+ error = 0;
+ goto out_free;
}
- return(rval);
-}
-xfs_zone_t *xfs_da_state_zone; /* anchor for state struct zone */
-xfs_zone_t *xfs_dabuf_zone; /* dabuf zone */
+ bp = xfs_trans_get_buf_map(trans, dp->i_mount->m_ddev_targp,
+ mapp, nmap, 0);
+ error = bp ? bp->b_error : -EIO;
+ if (error) {
+ if (bp)
+ xfs_trans_brelse(trans, bp);
+ goto out_free;
+ }
-/*
- * Allocate a dir-state structure.
- * We don't put them on the stack since they're large.
- */
-xfs_da_state_t *
-xfs_da_state_alloc(void)
-{
- return kmem_zone_zalloc(xfs_da_state_zone, KM_SLEEP);
-}
+ *bpp = bp;
-/*
- * Kill the altpath contents of a da-state structure.
- */
-void
-xfs_da_state_kill_altpath(xfs_da_state_t *state)
-{
- int i;
+out_free:
+ if (mapp != &map)
+ kmem_free(mapp);
- for (i = 0; i < state->altpath.active; i++) {
- if (state->altpath.blk[i].bp) {
- if (state->altpath.blk[i].bp != state->path.blk[i].bp)
- xfs_da_buf_done(state->altpath.blk[i].bp);
- state->altpath.blk[i].bp = NULL;
- }
- }
- state->altpath.active = 0;
+ return error;
}
/*
- * Free a da-state structure.
+ * Get a buffer for the dir/attr block, fill in the contents.
*/
-void
-xfs_da_state_free(xfs_da_state_t *state)
+int
+xfs_da_read_buf(
+ struct xfs_trans *trans,
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
+ xfs_daddr_t mappedbno,
+ struct xfs_buf **bpp,
+ int whichfork,
+ const struct xfs_buf_ops *ops)
{
- int i;
-
- xfs_da_state_kill_altpath(state);
- for (i = 0; i < state->path.active; i++) {
- if (state->path.blk[i].bp)
- xfs_da_buf_done(state->path.blk[i].bp);
+ struct xfs_buf *bp;
+ struct xfs_buf_map map;
+ struct xfs_buf_map *mapp;
+ int nmap;
+ int error;
+
+ *bpp = NULL;
+ mapp = ↦
+ nmap = 1;
+ error = xfs_dabuf_map(dp, bno, mappedbno, whichfork,
+ &mapp, &nmap);
+ if (error) {
+ /* mapping a hole is not an error, but we don't continue */
+ if (error == -1)
+ error = 0;
+ goto out_free;
}
- if (state->extravalid && state->extrablk.bp)
- xfs_da_buf_done(state->extrablk.bp);
-#ifdef DEBUG
- bzero((char *)state, sizeof(*state));
-#endif /* DEBUG */
- kmem_zone_free(xfs_da_state_zone, state);
-}
-
-#ifdef XFS_DABUF_DEBUG
-xfs_dabuf_t *xfs_dabuf_global_list;
-lock_t xfs_dabuf_global_lock;
-#endif
-/*
- * Create a dabuf.
- */
-/* ARGSUSED */
-STATIC xfs_dabuf_t *
-xfs_da_buf_make(int nbuf, xfs_buf_t **bps, inst_t *ra, int mem_flags)
-{
- xfs_buf_t *bp;
- xfs_dabuf_t *dabuf;
- int i;
- int off;
+ error = xfs_trans_read_buf_map(dp->i_mount, trans,
+ dp->i_mount->m_ddev_targp,
+ mapp, nmap, 0, &bp, ops);
+ if (error)
+ goto out_free;
- if (nbuf == 1)
- dabuf = kmem_zone_alloc(xfs_dabuf_zone, mem_flags);
+ if (whichfork == XFS_ATTR_FORK)
+ xfs_buf_set_ref(bp, XFS_ATTR_BTREE_REF);
else
- dabuf = kmem_alloc(XFS_DA_BUF_SIZE(nbuf), mem_flags);
- dabuf->dirty = 0;
-#ifdef XFS_DABUF_DEBUG
- dabuf->ra = ra;
- dabuf->dev = XFS_BUF_TARGET(bps[0]);
- dabuf->blkno = XFS_BUF_ADDR(bps[0]);
-#endif
- if (nbuf == 1) {
- dabuf->nbuf = 1;
- bp = bps[0];
- dabuf->bbcount = (short)BTOBB(XFS_BUF_COUNT(bp));
- dabuf->data = XFS_BUF_PTR(bp);
- dabuf->bps[0] = bp;
- } else {
- dabuf->nbuf = nbuf;
- for (i = 0, dabuf->bbcount = 0; i < nbuf; i++) {
- dabuf->bps[i] = bp = bps[i];
- dabuf->bbcount += BTOBB(XFS_BUF_COUNT(bp));
- }
- dabuf->data = kmem_alloc(BBTOB(dabuf->bbcount), KM_SLEEP);
- for (i = off = 0; i < nbuf; i++, off += XFS_BUF_COUNT(bp)) {
- bp = bps[i];
- bcopy(XFS_BUF_PTR(bp), (char *)dabuf->data + off,
- XFS_BUF_COUNT(bp));
- }
- }
-#ifdef XFS_DABUF_DEBUG
- {
- int s;
- xfs_dabuf_t *p;
-
- s = mutex_spinlock(&xfs_dabuf_global_lock);
- for (p = xfs_dabuf_global_list; p; p = p->next) {
- ASSERT(p->blkno != dabuf->blkno ||
- p->dev != dabuf->dev);
- }
- dabuf->prev = NULL;
- if (xfs_dabuf_global_list)
- xfs_dabuf_global_list->prev = dabuf;
- dabuf->next = xfs_dabuf_global_list;
- xfs_dabuf_global_list = dabuf;
- mutex_spinunlock(&xfs_dabuf_global_lock, s);
- }
-#endif
- return dabuf;
-}
-
-/*
- * Un-dirty a dabuf.
- */
-STATIC void
-xfs_da_buf_clean(xfs_dabuf_t *dabuf)
-{
- xfs_buf_t *bp;
- int i;
- int off;
-
- if (dabuf->dirty) {
- ASSERT(dabuf->nbuf > 1);
- dabuf->dirty = 0;
- for (i = off = 0; i < dabuf->nbuf;
- i++, off += XFS_BUF_COUNT(bp)) {
- bp = dabuf->bps[i];
- bcopy((char *)dabuf->data + off, XFS_BUF_PTR(bp),
- XFS_BUF_COUNT(bp));
- }
- }
-}
+ xfs_buf_set_ref(bp, XFS_DIR_BTREE_REF);
+ *bpp = bp;
+out_free:
+ if (mapp != &map)
+ kmem_free(mapp);
-/*
- * Release a dabuf.
- */
-void
-xfs_da_buf_done(xfs_dabuf_t *dabuf)
-{
- ASSERT(dabuf);
- ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]);
- if (dabuf->dirty)
- xfs_da_buf_clean(dabuf);
- if (dabuf->nbuf > 1)
- kmem_free(dabuf->data, BBTOB(dabuf->bbcount));
-#ifdef XFS_DABUF_DEBUG
- {
- int s;
-
- s = mutex_spinlock(&xfs_dabuf_global_lock);
- if (dabuf->prev)
- dabuf->prev->next = dabuf->next;
- else
- xfs_dabuf_global_list = dabuf->next;
- if (dabuf->next)
- dabuf->next->prev = dabuf->prev;
- mutex_spinunlock(&xfs_dabuf_global_lock, s);
- }
- bzero(dabuf, XFS_DA_BUF_SIZE(dabuf->nbuf));
-#endif
- if (dabuf->nbuf == 1)
- kmem_zone_free(xfs_dabuf_zone, dabuf);
- else
- kmem_free(dabuf, XFS_DA_BUF_SIZE(dabuf->nbuf));
+ return error;
}
/*
- * Log transaction from a dabuf.
+ * Readahead the dir/attr block.
*/
-void
-xfs_da_log_buf(xfs_trans_t *tp, xfs_dabuf_t *dabuf, uint first, uint last)
+int
+xfs_da_reada_buf(
+ struct xfs_inode *dp,
+ xfs_dablk_t bno,
+ xfs_daddr_t mappedbno,
+ int whichfork,
+ const struct xfs_buf_ops *ops)
{
- xfs_buf_t *bp;
- uint f;
- int i;
- uint l;
- int off;
+ struct xfs_buf_map map;
+ struct xfs_buf_map *mapp;
+ int nmap;
+ int error;
- ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]);
- if (dabuf->nbuf == 1) {
- ASSERT(dabuf->data == (void *)XFS_BUF_PTR(dabuf->bps[0]));
- xfs_trans_log_buf(tp, dabuf->bps[0], first, last);
- return;
- }
- dabuf->dirty = 1;
- ASSERT(first <= last);
- for (i = off = 0; i < dabuf->nbuf; i++, off += XFS_BUF_COUNT(bp)) {
- bp = dabuf->bps[i];
- f = off;
- l = f + XFS_BUF_COUNT(bp) - 1;
- if (f < first)
- f = first;
- if (l > last)
- l = last;
- if (f <= l)
- xfs_trans_log_buf(tp, bp, f - off, l - off);
- /*
- * B_DONE is set by xfs_trans_log buf.
- * If we don't set it on a new buffer (get not read)
- * then if we don't put anything in the buffer it won't
- * be set, and at commit it it released into the cache,
- * and then a read will fail.
- */
- else if (!(XFS_BUF_ISDONE(bp)))
- XFS_BUF_DONE(bp);
+ mapp = ↦
+ nmap = 1;
+ error = xfs_dabuf_map(dp, bno, mappedbno, whichfork,
+ &mapp, &nmap);
+ if (error) {
+ /* mapping a hole is not an error, but we don't continue */
+ if (error == -1)
+ error = 0;
+ goto out_free;
}
- ASSERT(last < off);
-}
-
-/*
- * Release dabuf from a transaction.
- * Have to free up the dabuf before the buffers are released,
- * since the synchronization on the dabuf is really the lock on the buffer.
- */
-void
-xfs_da_brelse(xfs_trans_t *tp, xfs_dabuf_t *dabuf)
-{
- xfs_buf_t *bp;
- xfs_buf_t **bplist;
- int i;
- int nbuf;
- ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]);
- if ((nbuf = dabuf->nbuf) == 1) {
- bplist = &bp;
- bp = dabuf->bps[0];
- } else {
- bplist = kmem_alloc(nbuf * sizeof(*bplist), KM_SLEEP);
- bcopy(dabuf->bps, bplist, nbuf * sizeof(*bplist));
- }
- xfs_da_buf_done(dabuf);
- for (i = 0; i < nbuf; i++)
- xfs_trans_brelse(tp, bplist[i]);
- if (bplist != &bp)
- kmem_free(bplist, nbuf * sizeof(*bplist));
-}
+ mappedbno = mapp[0].bm_bn;
+ xfs_buf_readahead_map(dp->i_mount->m_ddev_targp, mapp, nmap, ops);
-/*
- * Invalidate dabuf from a transaction.
- */
-void
-xfs_da_binval(xfs_trans_t *tp, xfs_dabuf_t *dabuf)
-{
- xfs_buf_t *bp;
- xfs_buf_t **bplist;
- int i;
- int nbuf;
+out_free:
+ if (mapp != &map)
+ kmem_free(mapp);
- ASSERT(dabuf->nbuf && dabuf->data && dabuf->bbcount && dabuf->bps[0]);
- if ((nbuf = dabuf->nbuf) == 1) {
- bplist = &bp;
- bp = dabuf->bps[0];
- } else {
- bplist = kmem_alloc(nbuf * sizeof(*bplist), KM_SLEEP);
- bcopy(dabuf->bps, bplist, nbuf * sizeof(*bplist));
- }
- xfs_da_buf_done(dabuf);
- for (i = 0; i < nbuf; i++)
- xfs_trans_binval(tp, bplist[i]);
- if (bplist != &bp)
- kmem_free(bplist, nbuf * sizeof(*bplist));
+ return error;
}
projects / thirdparty / xfsprogs-dev.git / blobdiff