#include "xfs_btree.h"
#include "xfs_btree_staging.h"
#include "xfs_refcount_btree.h"
+#include "xfs_refcount.h"
#include "xfs_alloc.h"
#include "xfs_trace.h"
#include "xfs_trans.h"
#include "xfs_rmap.h"
#include "xfs_ag.h"
+static struct kmem_cache *xfs_refcountbt_cur_cache;
+
static struct xfs_btree_cur *
xfs_refcountbt_dup_cursor(
struct xfs_btree_cur *cur)
STATIC void
xfs_refcountbt_set_root(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *ptr,
- int inc)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_ptr *ptr,
+ int inc)
{
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
STATIC int
xfs_refcountbt_alloc_block(
- struct xfs_btree_cur *cur,
- union xfs_btree_ptr *start,
- union xfs_btree_ptr *new,
- int *stat)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_ptr *start,
+ union xfs_btree_ptr *new,
+ int *stat)
{
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
memset(&args, 0, sizeof(args));
args.tp = cur->bc_tp;
args.mp = cur->bc_mp;
- args.type = XFS_ALLOCTYPE_NEAR_BNO;
- args.fsbno = XFS_AGB_TO_FSB(cur->bc_mp, cur->bc_ag.agno,
- xfs_refc_block(args.mp));
+ args.pag = cur->bc_ag.pag;
args.oinfo = XFS_RMAP_OINFO_REFC;
args.minlen = args.maxlen = args.prod = 1;
args.resv = XFS_AG_RESV_METADATA;
- error = xfs_alloc_vextent(&args);
+ error = xfs_alloc_vextent_near_bno(&args,
+ XFS_AGB_TO_FSB(args.mp, args.pag->pag_agno,
+ xfs_refc_block(args.mp)));
if (error)
goto out_error;
- trace_xfs_refcountbt_alloc_block(cur->bc_mp, cur->bc_ag.agno,
+ trace_xfs_refcountbt_alloc_block(cur->bc_mp, cur->bc_ag.pag->pag_agno,
args.agbno, 1);
if (args.fsbno == NULLFSBLOCK) {
*stat = 0;
return 0;
}
- ASSERT(args.agno == cur->bc_ag.agno);
+ ASSERT(args.agno == cur->bc_ag.pag->pag_agno);
ASSERT(args.len == 1);
new->s = cpu_to_be32(args.agbno);
struct xfs_mount *mp = cur->bc_mp;
struct xfs_buf *agbp = cur->bc_ag.agbp;
struct xfs_agf *agf = agbp->b_addr;
- xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, XFS_BUF_ADDR(bp));
- int error;
+ xfs_fsblock_t fsbno = XFS_DADDR_TO_FSB(mp, xfs_buf_daddr(bp));
- trace_xfs_refcountbt_free_block(cur->bc_mp, cur->bc_ag.agno,
+ trace_xfs_refcountbt_free_block(cur->bc_mp, cur->bc_ag.pag->pag_agno,
XFS_FSB_TO_AGBNO(cur->bc_mp, fsbno), 1);
be32_add_cpu(&agf->agf_refcount_blocks, -1);
xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_REFCOUNT_BLOCKS);
- error = xfs_free_extent(cur->bc_tp, fsbno, 1, &XFS_RMAP_OINFO_REFC,
- XFS_AG_RESV_METADATA);
- if (error)
- return error;
-
- return error;
+ return xfs_free_extent_later(cur->bc_tp, fsbno, 1,
+ &XFS_RMAP_OINFO_REFC, XFS_AG_RESV_METADATA, false);
}
STATIC int
STATIC void
xfs_refcountbt_init_key_from_rec(
- union xfs_btree_key *key,
- union xfs_btree_rec *rec)
+ union xfs_btree_key *key,
+ const union xfs_btree_rec *rec)
{
key->refc.rc_startblock = rec->refc.rc_startblock;
}
STATIC void
xfs_refcountbt_init_high_key_from_rec(
- union xfs_btree_key *key,
- union xfs_btree_rec *rec)
+ union xfs_btree_key *key,
+ const union xfs_btree_rec *rec)
{
- __u32 x;
+ __u32 x;
x = be32_to_cpu(rec->refc.rc_startblock);
x += be32_to_cpu(rec->refc.rc_blockcount) - 1;
struct xfs_btree_cur *cur,
union xfs_btree_rec *rec)
{
- rec->refc.rc_startblock = cpu_to_be32(cur->bc_rec.rc.rc_startblock);
+ const struct xfs_refcount_irec *irec = &cur->bc_rec.rc;
+ uint32_t start;
+
+ start = xfs_refcount_encode_startblock(irec->rc_startblock,
+ irec->rc_domain);
+ rec->refc.rc_startblock = cpu_to_be32(start);
rec->refc.rc_blockcount = cpu_to_be32(cur->bc_rec.rc.rc_blockcount);
rec->refc.rc_refcount = cpu_to_be32(cur->bc_rec.rc.rc_refcount);
}
{
struct xfs_agf *agf = cur->bc_ag.agbp->b_addr;
- ASSERT(cur->bc_ag.agno == be32_to_cpu(agf->agf_seqno));
+ ASSERT(cur->bc_ag.pag->pag_agno == be32_to_cpu(agf->agf_seqno));
ptr->s = agf->agf_refcount_root;
}
STATIC int64_t
xfs_refcountbt_key_diff(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *key)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *key)
{
- struct xfs_refcount_irec *rec = &cur->bc_rec.rc;
- struct xfs_refcount_key *kp = &key->refc;
+ const struct xfs_refcount_key *kp = &key->refc;
+ const struct xfs_refcount_irec *irec = &cur->bc_rec.rc;
+ uint32_t start;
- return (int64_t)be32_to_cpu(kp->rc_startblock) - rec->rc_startblock;
+ start = xfs_refcount_encode_startblock(irec->rc_startblock,
+ irec->rc_domain);
+ return (int64_t)be32_to_cpu(kp->rc_startblock) - start;
}
STATIC int64_t
xfs_refcountbt_diff_two_keys(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *k1,
- union xfs_btree_key *k2)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *k1,
+ const union xfs_btree_key *k2,
+ const union xfs_btree_key *mask)
{
+ ASSERT(!mask || mask->refc.rc_startblock);
+
return (int64_t)be32_to_cpu(k1->refc.rc_startblock) -
- be32_to_cpu(k2->refc.rc_startblock);
+ be32_to_cpu(k2->refc.rc_startblock);
}
STATIC xfs_failaddr_t
if (!xfs_verify_magic(bp, block->bb_magic))
return __this_address;
- if (!xfs_sb_version_hasreflink(&mp->m_sb))
+ if (!xfs_has_reflink(mp))
return __this_address;
fa = xfs_btree_sblock_v5hdr_verify(bp);
if (fa)
return fa;
level = be16_to_cpu(block->bb_level);
- if (pag && pag->pagf_init) {
- if (level >= pag->pagf_refcount_level)
+ if (pag && xfs_perag_initialised_agf(pag)) {
+ unsigned int maxlevel = pag->pagf_refcount_level;
+
+#ifdef CONFIG_XFS_ONLINE_REPAIR
+ /*
+ * Online repair could be rewriting the refcount btree, so
+ * we'll validate against the larger of either tree while this
+ * is going on.
+ */
+ maxlevel = max_t(unsigned int, maxlevel,
+ pag->pagf_repair_refcount_level);
+#endif
+ if (level >= maxlevel)
return __this_address;
} else if (level >= mp->m_refc_maxlevels)
return __this_address;
STATIC int
xfs_refcountbt_keys_inorder(
- struct xfs_btree_cur *cur,
- union xfs_btree_key *k1,
- union xfs_btree_key *k2)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *k1,
+ const union xfs_btree_key *k2)
{
return be32_to_cpu(k1->refc.rc_startblock) <
be32_to_cpu(k2->refc.rc_startblock);
STATIC int
xfs_refcountbt_recs_inorder(
- struct xfs_btree_cur *cur,
- union xfs_btree_rec *r1,
- union xfs_btree_rec *r2)
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_rec *r1,
+ const union xfs_btree_rec *r2)
{
return be32_to_cpu(r1->refc.rc_startblock) +
be32_to_cpu(r1->refc.rc_blockcount) <=
be32_to_cpu(r2->refc.rc_startblock);
}
+STATIC enum xbtree_key_contig
+xfs_refcountbt_keys_contiguous(
+ struct xfs_btree_cur *cur,
+ const union xfs_btree_key *key1,
+ const union xfs_btree_key *key2,
+ const union xfs_btree_key *mask)
+{
+ ASSERT(!mask || mask->refc.rc_startblock);
+
+ return xbtree_key_contig(be32_to_cpu(key1->refc.rc_startblock),
+ be32_to_cpu(key2->refc.rc_startblock));
+}
+
static const struct xfs_btree_ops xfs_refcountbt_ops = {
.rec_len = sizeof(struct xfs_refcount_rec),
.key_len = sizeof(struct xfs_refcount_key),
.diff_two_keys = xfs_refcountbt_diff_two_keys,
.keys_inorder = xfs_refcountbt_keys_inorder,
.recs_inorder = xfs_refcountbt_recs_inorder,
+ .keys_contiguous = xfs_refcountbt_keys_contiguous,
};
/*
ASSERT(pag->pag_agno < mp->m_sb.sb_agcount);
- cur = kmem_cache_zalloc(xfs_btree_cur_zone, GFP_NOFS | __GFP_NOFAIL);
- cur->bc_tp = tp;
- cur->bc_mp = mp;
- cur->bc_btnum = XFS_BTNUM_REFC;
- cur->bc_blocklog = mp->m_sb.sb_blocklog;
+ cur = xfs_btree_alloc_cursor(mp, tp, XFS_BTNUM_REFC,
+ mp->m_refc_maxlevels, xfs_refcountbt_cur_cache);
cur->bc_statoff = XFS_STATS_CALC_INDEX(xs_refcbt_2);
cur->bc_flags |= XFS_BTREE_CRC_BLOCKS;
- /* take a reference for the cursor */
- atomic_inc(&pag->pag_ref);
- cur->bc_ag.pag = pag;
- cur->bc_ag.agno = pag->pag_agno;
-
+ cur->bc_ag.pag = xfs_perag_hold(pag);
cur->bc_ag.refc.nr_ops = 0;
cur->bc_ag.refc.shape_changes = 0;
cur->bc_ops = &xfs_refcountbt_ops;
xfs_btree_commit_afakeroot(cur, tp, agbp, &xfs_refcountbt_ops);
}
+/* Calculate number of records in a refcount btree block. */
+static inline unsigned int
+xfs_refcountbt_block_maxrecs(
+ unsigned int blocklen,
+ bool leaf)
+{
+ if (leaf)
+ return blocklen / sizeof(struct xfs_refcount_rec);
+ return blocklen / (sizeof(struct xfs_refcount_key) +
+ sizeof(xfs_refcount_ptr_t));
+}
+
/*
* Calculate the number of records in a refcount btree block.
*/
bool leaf)
{
blocklen -= XFS_REFCOUNT_BLOCK_LEN;
+ return xfs_refcountbt_block_maxrecs(blocklen, leaf);
+}
- if (leaf)
- return blocklen / sizeof(struct xfs_refcount_rec);
- return blocklen / (sizeof(struct xfs_refcount_key) +
- sizeof(xfs_refcount_ptr_t));
+/* Compute the max possible height of the maximally sized refcount btree. */
+unsigned int
+xfs_refcountbt_maxlevels_ondisk(void)
+{
+ unsigned int minrecs[2];
+ unsigned int blocklen;
+
+ blocklen = XFS_MIN_CRC_BLOCKSIZE - XFS_BTREE_SBLOCK_CRC_LEN;
+
+ minrecs[0] = xfs_refcountbt_block_maxrecs(blocklen, true) / 2;
+ minrecs[1] = xfs_refcountbt_block_maxrecs(blocklen, false) / 2;
+
+ return xfs_btree_compute_maxlevels(minrecs, XFS_MAX_CRC_AG_BLOCKS);
}
/* Compute the maximum height of a refcount btree. */
xfs_refcountbt_compute_maxlevels(
struct xfs_mount *mp)
{
+ if (!xfs_has_reflink(mp)) {
+ mp->m_refc_maxlevels = 0;
+ return;
+ }
+
mp->m_refc_maxlevels = xfs_btree_compute_maxlevels(
mp->m_refc_mnr, mp->m_sb.sb_agblocks);
+ ASSERT(mp->m_refc_maxlevels <= xfs_refcountbt_maxlevels_ondisk());
}
/* Calculate the refcount btree size for some records. */
xfs_extlen_t tree_len;
int error;
- if (!xfs_sb_version_hasreflink(&mp->m_sb))
+ if (!xfs_has_reflink(mp))
return 0;
- error = xfs_alloc_read_agf(mp, tp, pag->pag_agno, 0, &agbp);
+ error = xfs_alloc_read_agf(pag, tp, 0, &agbp);
if (error)
return error;
* never be available for the kinds of things that would require btree
* expansion. We therefore can pretend the space isn't there.
*/
- if (mp->m_sb.sb_logstart &&
- XFS_FSB_TO_AGNO(mp, mp->m_sb.sb_logstart) == pag->pag_agno)
+ if (xfs_ag_contains_log(mp, pag->pag_agno))
agblocks -= mp->m_sb.sb_logblocks;
*ask += xfs_refcountbt_max_size(mp, agblocks);
return error;
}
+
+int __init
+xfs_refcountbt_init_cur_cache(void)
+{
+ xfs_refcountbt_cur_cache = kmem_cache_create("xfs_refcbt_cur",
+ xfs_btree_cur_sizeof(xfs_refcountbt_maxlevels_ondisk()),
+ 0, 0, NULL);
+
+ if (!xfs_refcountbt_cur_cache)
+ return -ENOMEM;
+ return 0;
+}
+
+void
+xfs_refcountbt_destroy_cur_cache(void)
+{
+ kmem_cache_destroy(xfs_refcountbt_cur_cache);
+ xfs_refcountbt_cur_cache = NULL;
+}
projects / thirdparty / xfsprogs-dev.git / blobdiff