+// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2000-2006 Silicon Graphics, Inc.
* All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms 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. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_BMAP_H__
#define __XFS_BMAP_H__
* Argument structure for xfs_bmap_alloc.
*/
struct xfs_bmalloca {
- xfs_fsblock_t *firstblock; /* i/o first block allocated */
- struct xfs_defer_ops *dfops; /* bmap freelist */
struct xfs_trans *tp; /* transaction pointer */
struct xfs_inode *ip; /* incore inode pointer */
struct xfs_bmbt_irec prev; /* extent before the new one */
xfs_fsblock_t blkno; /* starting block of new extent */
struct xfs_btree_cur *cur; /* btree cursor */
- xfs_extnum_t idx; /* current extent index */
+ struct xfs_iext_cursor icur; /* incore extent cursor */
int nallocs;/* number of extents alloc'd */
int logflags;/* flags for transaction logging */
xfs_extlen_t xefi_blockcount;/* number of blocks in extent */
struct list_head xefi_list;
struct xfs_owner_info xefi_oinfo; /* extent owner */
+ bool xefi_skip_discard;
};
#define XFS_BMAP_MAX_NMAP 4
#define XFS_BMAPI_METADATA 0x002 /* mapping metadata not user data */
#define XFS_BMAPI_ATTRFORK 0x004 /* use attribute fork not data */
#define XFS_BMAPI_PREALLOC 0x008 /* preallocation op: unwritten space */
-#define XFS_BMAPI_IGSTATE 0x010 /* Ignore state - */
- /* combine contig. space */
#define XFS_BMAPI_CONTIG 0x020 /* must allocate only one extent */
/*
* unwritten extent conversion - this needs write cache flushing and no additional
*/
#define XFS_BMAPI_REMAP 0x100
+/* Map something in the CoW fork. */
+#define XFS_BMAPI_COWFORK 0x200
+
+/* Only convert delalloc space, don't allocate entirely new extents */
+#define XFS_BMAPI_DELALLOC 0x400
+
+/* Only convert unwritten extents, don't allocate new blocks */
+#define XFS_BMAPI_CONVERT_ONLY 0x800
+
+/* Skip online discard of freed extents */
+#define XFS_BMAPI_NODISCARD 0x1000
+
+/* Do not update the rmap btree. Used for reconstructing bmbt from rmapbt. */
+#define XFS_BMAPI_NORMAP 0x2000
+
#define XFS_BMAPI_FLAGS \
{ XFS_BMAPI_ENTIRE, "ENTIRE" }, \
{ XFS_BMAPI_METADATA, "METADATA" }, \
{ XFS_BMAPI_ATTRFORK, "ATTRFORK" }, \
{ XFS_BMAPI_PREALLOC, "PREALLOC" }, \
- { XFS_BMAPI_IGSTATE, "IGSTATE" }, \
{ XFS_BMAPI_CONTIG, "CONTIG" }, \
{ XFS_BMAPI_CONVERT, "CONVERT" }, \
{ XFS_BMAPI_ZERO, "ZERO" }, \
- { XFS_BMAPI_REMAP, "REMAP" }
+ { XFS_BMAPI_REMAP, "REMAP" }, \
+ { XFS_BMAPI_COWFORK, "COWFORK" }, \
+ { XFS_BMAPI_DELALLOC, "DELALLOC" }, \
+ { XFS_BMAPI_CONVERT_ONLY, "CONVERT_ONLY" }, \
+ { XFS_BMAPI_NODISCARD, "NODISCARD" }, \
+ { XFS_BMAPI_NORMAP, "NORMAP" }
static inline int xfs_bmapi_aflag(int w)
{
- return (w == XFS_ATTR_FORK ? XFS_BMAPI_ATTRFORK : 0);
+ return (w == XFS_ATTR_FORK ? XFS_BMAPI_ATTRFORK :
+ (w == XFS_COW_FORK ? XFS_BMAPI_COWFORK : 0));
+}
+
+static inline int xfs_bmapi_whichfork(int bmapi_flags)
+{
+ if (bmapi_flags & XFS_BMAPI_COWFORK)
+ return XFS_COW_FORK;
+ else if (bmapi_flags & XFS_BMAPI_ATTRFORK)
+ return XFS_ATTR_FORK;
+ return XFS_DATA_FORK;
}
/*
#define BMAP_LEFT_VALID (1 << 6)
#define BMAP_RIGHT_VALID (1 << 7)
#define BMAP_ATTRFORK (1 << 8)
+#define BMAP_COWFORK (1 << 9)
#define XFS_BMAP_EXT_FLAGS \
{ BMAP_LEFT_CONTIG, "LC" }, \
{ BMAP_RIGHT_CONTIG, "RC" }, \
{ BMAP_LEFT_FILLING, "LF" }, \
{ BMAP_RIGHT_FILLING, "RF" }, \
- { BMAP_ATTRFORK, "ATTR" }
+ { BMAP_ATTRFORK, "ATTR" }, \
+ { BMAP_COWFORK, "COW" }
/*
- * This macro is used to determine how many extents will be shifted
- * in one write transaction. We could require two splits,
- * an extent move on the first and an extent merge on the second,
- * So it is proper that one extent is shifted inside write transaction
- * at a time.
+ * Return true if the extent is a real, allocated extent, or false if it is a
+ * delayed allocation, and unwritten extent or a hole.
*/
-#define XFS_BMAP_MAX_SHIFT_EXTENTS 1
-
-enum shift_direction {
- SHIFT_LEFT = 0,
- SHIFT_RIGHT,
-};
-
-#ifdef DEBUG
-void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt,
- int whichfork, unsigned long caller_ip);
-#define XFS_BMAP_TRACE_EXLIST(ip,c,w) \
- xfs_bmap_trace_exlist(ip,c,w, _THIS_IP_)
-#else
-#define XFS_BMAP_TRACE_EXLIST(ip,c,w)
-#endif
+static inline bool xfs_bmap_is_real_extent(struct xfs_bmbt_irec *irec)
+{
+ return irec->br_state != XFS_EXT_UNWRITTEN &&
+ irec->br_startblock != HOLESTARTBLOCK &&
+ irec->br_startblock != DELAYSTARTBLOCK &&
+ !isnullstartblock(irec->br_startblock);
+}
+void xfs_trim_extent(struct xfs_bmbt_irec *irec, xfs_fileoff_t bno,
+ xfs_filblks_t len);
+void xfs_trim_extent_eof(struct xfs_bmbt_irec *, struct xfs_inode *);
int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd);
void xfs_bmap_local_to_extents_empty(struct xfs_inode *ip, int whichfork);
-void xfs_bmap_add_free(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
+void __xfs_bmap_add_free(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
xfs_fsblock_t bno, xfs_filblks_t len,
- struct xfs_owner_info *oinfo);
+ struct xfs_owner_info *oinfo, bool skip_discard);
void xfs_bmap_compute_maxlevels(struct xfs_mount *mp, int whichfork);
int xfs_bmap_first_unused(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_extlen_t len, xfs_fileoff_t *unused, int whichfork);
int xfs_bmap_last_offset(struct xfs_inode *ip, xfs_fileoff_t *unused,
int whichfork);
int xfs_bmap_one_block(struct xfs_inode *ip, int whichfork);
-int xfs_bmap_read_extents(struct xfs_trans *tp, struct xfs_inode *ip,
- int whichfork);
int xfs_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno,
xfs_filblks_t len, struct xfs_bmbt_irec *mval,
int *nmap, int flags);
int xfs_bmapi_write(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_fileoff_t bno, xfs_filblks_t len, int flags,
- xfs_fsblock_t *firstblock, xfs_extlen_t total,
- struct xfs_bmbt_irec *mval, int *nmap,
- struct xfs_defer_ops *dfops);
+ xfs_extlen_t total, struct xfs_bmbt_irec *mval, int *nmap);
+int __xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip,
+ xfs_fileoff_t bno, xfs_filblks_t *rlen, int flags,
+ xfs_extnum_t nexts);
int xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_fileoff_t bno, xfs_filblks_t len, int flags,
- xfs_extnum_t nexts, xfs_fsblock_t *firstblock,
- struct xfs_defer_ops *dfops, int *done);
-int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx,
- xfs_extnum_t num);
+ xfs_extnum_t nexts, int *done);
+int xfs_bmap_del_extent_delay(struct xfs_inode *ip, int whichfork,
+ struct xfs_iext_cursor *cur, struct xfs_bmbt_irec *got,
+ struct xfs_bmbt_irec *del);
+void xfs_bmap_del_extent_cow(struct xfs_inode *ip,
+ struct xfs_iext_cursor *cur, struct xfs_bmbt_irec *got,
+ struct xfs_bmbt_irec *del);
uint xfs_default_attroffset(struct xfs_inode *ip);
-int xfs_bmap_shift_extents(struct xfs_trans *tp, struct xfs_inode *ip,
+int xfs_bmap_collapse_extents(struct xfs_trans *tp, struct xfs_inode *ip,
+ xfs_fileoff_t *next_fsb, xfs_fileoff_t offset_shift_fsb,
+ bool *done);
+int xfs_bmap_can_insert_extents(struct xfs_inode *ip, xfs_fileoff_t off,
+ xfs_fileoff_t shift);
+int xfs_bmap_insert_extents(struct xfs_trans *tp, struct xfs_inode *ip,
xfs_fileoff_t *next_fsb, xfs_fileoff_t offset_shift_fsb,
- int *done, xfs_fileoff_t stop_fsb, xfs_fsblock_t *firstblock,
- struct xfs_defer_ops *dfops, enum shift_direction direction,
- int num_exts);
+ bool *done, xfs_fileoff_t stop_fsb);
int xfs_bmap_split_extent(struct xfs_inode *ip, xfs_fileoff_t split_offset);
-struct xfs_bmbt_rec_host *
- xfs_bmap_search_extents(struct xfs_inode *ip, xfs_fileoff_t bno,
- int fork, int *eofp, xfs_extnum_t *lastxp,
- struct xfs_bmbt_irec *gotp, struct xfs_bmbt_irec *prevp);
-int xfs_bmapi_reserve_delalloc(struct xfs_inode *ip, xfs_fileoff_t aoff,
- xfs_filblks_t len, struct xfs_bmbt_irec *got,
- struct xfs_bmbt_irec *prev, xfs_extnum_t *lastx, int eof);
-
-struct xfs_bmbt_rec_host *
- xfs_bmap_search_extents(struct xfs_inode *ip, xfs_fileoff_t bno,
- int fork, int *eofp, xfs_extnum_t *lastxp,
- struct xfs_bmbt_irec *gotp,
- struct xfs_bmbt_irec *prevp);
+int xfs_bmapi_reserve_delalloc(struct xfs_inode *ip, int whichfork,
+ xfs_fileoff_t off, xfs_filblks_t len, xfs_filblks_t prealloc,
+ struct xfs_bmbt_irec *got, struct xfs_iext_cursor *cur,
+ int eof);
+static inline void
+xfs_bmap_add_free(
+ struct xfs_mount *mp,
+ struct xfs_defer_ops *dfops,
+ xfs_fsblock_t bno,
+ xfs_filblks_t len,
+ struct xfs_owner_info *oinfo)
+{
+ __xfs_bmap_add_free(mp, dfops, bno, len, oinfo, false);
+}
enum xfs_bmap_intent_type {
XFS_BMAP_MAP = 1,
struct xfs_bmbt_irec bi_bmap;
};
+int xfs_bmap_finish_one(struct xfs_trans *tp, struct xfs_defer_ops *dfops,
+ struct xfs_inode *ip, enum xfs_bmap_intent_type type,
+ int whichfork, xfs_fileoff_t startoff, xfs_fsblock_t startblock,
+ xfs_filblks_t *blockcount, xfs_exntst_t state);
+int xfs_bmap_map_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
+ struct xfs_inode *ip, struct xfs_bmbt_irec *imap);
+int xfs_bmap_unmap_extent(struct xfs_mount *mp, struct xfs_defer_ops *dfops,
+ struct xfs_inode *ip, struct xfs_bmbt_irec *imap);
+
+static inline int xfs_bmap_fork_to_state(int whichfork)
+{
+ switch (whichfork) {
+ case XFS_ATTR_FORK:
+ return BMAP_ATTRFORK;
+ case XFS_COW_FORK:
+ return BMAP_COWFORK;
+ default:
+ return 0;
+ }
+}
+
+xfs_failaddr_t xfs_bmap_validate_extent(struct xfs_inode *ip, int whichfork,
+ struct xfs_bmbt_irec *irec);
+
+int xfs_bmapi_remap(struct xfs_trans *tp, struct xfs_inode *ip,
+ xfs_fileoff_t bno, xfs_filblks_t len, xfs_fsblock_t startblock,
+ int flags);
+
#endif /* __XFS_BMAP_H__ */
projects / thirdparty / xfsprogs-dev.git / blobdiff