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Diffstat (limited to 'fs/xfs/libxfs/xfs_rmap.h')
-rw-r--r--fs/xfs/libxfs/xfs_rmap.h134
1 files changed, 98 insertions, 36 deletions
diff --git a/fs/xfs/libxfs/xfs_rmap.h b/fs/xfs/libxfs/xfs_rmap.h
index e21ed0294e5c..5f39f6e53cd1 100644
--- a/fs/xfs/libxfs/xfs_rmap.h
+++ b/fs/xfs/libxfs/xfs_rmap.h
@@ -6,6 +6,9 @@
#ifndef __XFS_RMAP_H__
#define __XFS_RMAP_H__
+struct xfs_perag;
+struct xfs_rtgroup;
+
static inline void
xfs_rmap_ino_bmbt_owner(
struct xfs_owner_info *oi,
@@ -60,21 +63,23 @@ xfs_rmap_irec_offset_pack(
return x;
}
-static inline int
+static inline xfs_failaddr_t
xfs_rmap_irec_offset_unpack(
__u64 offset,
struct xfs_rmap_irec *irec)
{
if (offset & ~(XFS_RMAP_OFF_MASK | XFS_RMAP_OFF_FLAGS))
- return -EFSCORRUPTED;
+ return __this_address;
+
irec->rm_offset = XFS_RMAP_OFF(offset);
+ irec->rm_flags = 0;
if (offset & XFS_RMAP_OFF_ATTR_FORK)
irec->rm_flags |= XFS_RMAP_ATTR_FORK;
if (offset & XFS_RMAP_OFF_BMBT_BLOCK)
irec->rm_flags |= XFS_RMAP_BMBT_BLOCK;
if (offset & XFS_RMAP_OFF_UNWRITTEN)
irec->rm_flags |= XFS_RMAP_UNWRITTEN;
- return 0;
+ return NULL;
}
static inline void
@@ -112,15 +117,15 @@ xfs_owner_info_pack(
}
int xfs_rmap_alloc(struct xfs_trans *tp, struct xfs_buf *agbp,
- xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
+ struct xfs_perag *pag, xfs_agblock_t bno, xfs_extlen_t len,
const struct xfs_owner_info *oinfo);
int xfs_rmap_free(struct xfs_trans *tp, struct xfs_buf *agbp,
- xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
+ struct xfs_perag *pag, xfs_agblock_t bno, xfs_extlen_t len,
const struct xfs_owner_info *oinfo);
int xfs_rmap_lookup_le(struct xfs_btree_cur *cur, xfs_agblock_t bno,
- xfs_extlen_t len, uint64_t owner, uint64_t offset,
- unsigned int flags, int *stat);
+ uint64_t owner, uint64_t offset, unsigned int flags,
+ struct xfs_rmap_irec *irec, int *stat);
int xfs_rmap_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len, uint64_t owner, uint64_t offset,
unsigned int flags, int *stat);
@@ -131,12 +136,13 @@ int xfs_rmap_get_rec(struct xfs_btree_cur *cur, struct xfs_rmap_irec *irec,
int *stat);
typedef int (*xfs_rmap_query_range_fn)(
- struct xfs_btree_cur *cur,
- struct xfs_rmap_irec *rec,
- void *priv);
+ struct xfs_btree_cur *cur,
+ const struct xfs_rmap_irec *rec,
+ void *priv);
int xfs_rmap_query_range(struct xfs_btree_cur *cur,
- struct xfs_rmap_irec *low_rec, struct xfs_rmap_irec *high_rec,
+ const struct xfs_rmap_irec *low_rec,
+ const struct xfs_rmap_irec *high_rec,
xfs_rmap_query_range_fn fn, void *priv);
int xfs_rmap_query_all(struct xfs_btree_cur *cur, xfs_rmap_query_range_fn fn,
void *priv);
@@ -152,53 +158,79 @@ enum xfs_rmap_intent_type {
XFS_RMAP_FREE,
};
+#define XFS_RMAP_INTENT_STRINGS \
+ { XFS_RMAP_MAP, "map" }, \
+ { XFS_RMAP_MAP_SHARED, "map_shared" }, \
+ { XFS_RMAP_UNMAP, "unmap" }, \
+ { XFS_RMAP_UNMAP_SHARED, "unmap_shared" }, \
+ { XFS_RMAP_CONVERT, "cvt" }, \
+ { XFS_RMAP_CONVERT_SHARED, "cvt_shared" }, \
+ { XFS_RMAP_ALLOC, "alloc" }, \
+ { XFS_RMAP_FREE, "free" }
+
struct xfs_rmap_intent {
struct list_head ri_list;
enum xfs_rmap_intent_type ri_type;
- uint64_t ri_owner;
int ri_whichfork;
+ uint64_t ri_owner;
struct xfs_bmbt_irec ri_bmap;
+ struct xfs_group *ri_group;
+ bool ri_realtime;
};
/* functions for updating the rmapbt based on bmbt map/unmap operations */
-int xfs_rmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
+void xfs_rmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip,
int whichfork, struct xfs_bmbt_irec *imap);
-int xfs_rmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip,
+void xfs_rmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip,
int whichfork, struct xfs_bmbt_irec *imap);
-int xfs_rmap_convert_extent(struct xfs_mount *mp, struct xfs_trans *tp,
+void xfs_rmap_convert_extent(struct xfs_mount *mp, struct xfs_trans *tp,
struct xfs_inode *ip, int whichfork,
struct xfs_bmbt_irec *imap);
-int xfs_rmap_alloc_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
- xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner);
-int xfs_rmap_free_extent(struct xfs_trans *tp, xfs_agnumber_t agno,
- xfs_agblock_t bno, xfs_extlen_t len, uint64_t owner);
-
-void xfs_rmap_finish_one_cleanup(struct xfs_trans *tp,
- struct xfs_btree_cur *rcur, int error);
-int xfs_rmap_finish_one(struct xfs_trans *tp, enum xfs_rmap_intent_type type,
- uint64_t owner, int whichfork, xfs_fileoff_t startoff,
- xfs_fsblock_t startblock, xfs_filblks_t blockcount,
- xfs_exntst_t state, struct xfs_btree_cur **pcur);
-
-int xfs_rmap_find_left_neighbor(struct xfs_btree_cur *cur, xfs_agblock_t bno,
- uint64_t owner, uint64_t offset, unsigned int flags,
- struct xfs_rmap_irec *irec, int *stat);
+void xfs_rmap_alloc_extent(struct xfs_trans *tp, bool isrt, xfs_fsblock_t fsbno,
+ xfs_extlen_t len, uint64_t owner);
+void xfs_rmap_free_extent(struct xfs_trans *tp, bool isrt, xfs_fsblock_t fsbno,
+ xfs_extlen_t len, uint64_t owner);
+
+int xfs_rmap_finish_one(struct xfs_trans *tp, struct xfs_rmap_intent *ri,
+ struct xfs_btree_cur **pcur);
+int __xfs_rmap_finish_intent(struct xfs_btree_cur *rcur,
+ enum xfs_rmap_intent_type op, xfs_agblock_t bno,
+ xfs_extlen_t len, const struct xfs_owner_info *oinfo,
+ bool unwritten);
+
int xfs_rmap_lookup_le_range(struct xfs_btree_cur *cur, xfs_agblock_t bno,
uint64_t owner, uint64_t offset, unsigned int flags,
struct xfs_rmap_irec *irec, int *stat);
int xfs_rmap_compare(const struct xfs_rmap_irec *a,
const struct xfs_rmap_irec *b);
union xfs_btree_rec;
-int xfs_rmap_btrec_to_irec(union xfs_btree_rec *rec,
+xfs_failaddr_t xfs_rmap_btrec_to_irec(const union xfs_btree_rec *rec,
struct xfs_rmap_irec *irec);
-int xfs_rmap_has_record(struct xfs_btree_cur *cur, xfs_agblock_t bno,
- xfs_extlen_t len, bool *exists);
-int xfs_rmap_record_exists(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+xfs_failaddr_t xfs_rmap_check_irec(struct xfs_perag *pag,
+ const struct xfs_rmap_irec *irec);
+xfs_failaddr_t xfs_rtrmap_check_irec(struct xfs_rtgroup *rtg,
+ const struct xfs_rmap_irec *irec);
+
+int xfs_rmap_has_records(struct xfs_btree_cur *cur, xfs_agblock_t bno,
+ xfs_extlen_t len, enum xbtree_recpacking *outcome);
+
+struct xfs_rmap_matches {
+ /* Number of owner matches. */
+ unsigned long long matches;
+
+ /* Number of non-owner matches. */
+ unsigned long long non_owner_matches;
+
+ /* Number of non-owner matches that conflict with the owner matches. */
+ unsigned long long bad_non_owner_matches;
+};
+
+int xfs_rmap_count_owners(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len, const struct xfs_owner_info *oinfo,
- bool *has_rmap);
+ struct xfs_rmap_matches *rmatch);
int xfs_rmap_has_other_keys(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len, const struct xfs_owner_info *oinfo,
- bool *has_rmap);
+ bool *has_other);
int xfs_rmap_map_raw(struct xfs_btree_cur *cur, struct xfs_rmap_irec *rmap);
extern const struct xfs_owner_info XFS_RMAP_OINFO_SKIP_UPDATE;
@@ -211,4 +243,34 @@ extern const struct xfs_owner_info XFS_RMAP_OINFO_INODES;
extern const struct xfs_owner_info XFS_RMAP_OINFO_REFC;
extern const struct xfs_owner_info XFS_RMAP_OINFO_COW;
+extern struct kmem_cache *xfs_rmap_intent_cache;
+
+int __init xfs_rmap_intent_init_cache(void);
+void xfs_rmap_intent_destroy_cache(void);
+
+/*
+ * Parameters for tracking reverse mapping changes. The hook function arg
+ * parameter is enum xfs_rmap_intent_type, and the rest is below.
+ */
+struct xfs_rmap_update_params {
+ xfs_agblock_t startblock;
+ xfs_extlen_t blockcount;
+ struct xfs_owner_info oinfo;
+ bool unwritten;
+};
+
+#ifdef CONFIG_XFS_LIVE_HOOKS
+
+struct xfs_rmap_hook {
+ struct xfs_hook rmap_hook;
+};
+
+void xfs_rmap_hook_disable(void);
+void xfs_rmap_hook_enable(void);
+
+int xfs_rmap_hook_add(struct xfs_group *xg, struct xfs_rmap_hook *hook);
+void xfs_rmap_hook_del(struct xfs_group *xg, struct xfs_rmap_hook *hook);
+void xfs_rmap_hook_setup(struct xfs_rmap_hook *hook, notifier_fn_t mod_fn);
+#endif
+
#endif /* __XFS_RMAP_H__ */
generated by cgit (git 2.34.1) at 2025-12-24 21:50:13 +0000