diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_bmap.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_bmap.h | 116 |
1 files changed, 49 insertions, 67 deletions
diff --git a/fs/xfs/libxfs/xfs_bmap.h b/fs/xfs/libxfs/xfs_bmap.h index 14d25e0b7d9c..16db95b11589 100644 --- a/fs/xfs/libxfs/xfs_bmap.h +++ b/fs/xfs/libxfs/xfs_bmap.h @@ -1,4 +1,4 @@ -// SPDX-License-Identifier: GPL-2.0 +/* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright (c) 2000-2006 Silicon Graphics, Inc. * All Rights Reserved. @@ -13,8 +13,6 @@ struct xfs_inode; struct xfs_mount; struct xfs_trans; -extern kmem_zone_t *xfs_bmap_free_item_zone; - /* * Argument structure for xfs_bmap_alloc. */ @@ -41,20 +39,7 @@ struct xfs_bmalloca { bool aeof; /* allocated space at eof */ bool conv; /* overwriting unwritten extents */ int datatype;/* data type being allocated */ - int flags; -}; - -/* - * List of extents to be free "later". - * The list is kept sorted on xbf_startblock. - */ -struct xfs_extent_free_item -{ - xfs_fsblock_t xefi_startblock;/* starting fs block number */ - 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; + uint32_t flags; }; #define XFS_BMAP_MAX_NMAP 4 @@ -62,17 +47,17 @@ struct xfs_extent_free_item /* * Flags for xfs_bmapi_* */ -#define XFS_BMAPI_ENTIRE 0x001 /* return entire extent, not trimmed */ -#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_CONTIG 0x020 /* must allocate only one extent */ +#define XFS_BMAPI_ENTIRE (1u << 0) /* return entire extent untrimmed */ +#define XFS_BMAPI_METADATA (1u << 1) /* mapping metadata not user data */ +#define XFS_BMAPI_ATTRFORK (1u << 2) /* use attribute fork not data */ +#define XFS_BMAPI_PREALLOC (1u << 3) /* preallocating unwritten space */ +#define XFS_BMAPI_CONTIG (1u << 4) /* must allocate only one extent */ /* * unwritten extent conversion - this needs write cache flushing and no additional * allocation alignments. When specified with XFS_BMAPI_PREALLOC it converts * from written to unwritten, otherwise convert from unwritten to written. */ -#define XFS_BMAPI_CONVERT 0x040 +#define XFS_BMAPI_CONVERT (1u << 5) /* * allocate zeroed extents - this requires all newly allocated user data extents @@ -80,7 +65,7 @@ struct xfs_extent_free_item * Use in conjunction with XFS_BMAPI_CONVERT to convert unwritten extents found * during the allocation range to zeroed written extents. */ -#define XFS_BMAPI_ZERO 0x080 +#define XFS_BMAPI_ZERO (1u << 6) /* * Map the inode offset to the block given in ap->firstblock. Primarily @@ -90,16 +75,16 @@ struct xfs_extent_free_item * For bunmapi, this flag unmaps the range without adjusting quota, reducing * refcount, or freeing the blocks. */ -#define XFS_BMAPI_REMAP 0x100 +#define XFS_BMAPI_REMAP (1u << 7) /* Map something in the CoW fork. */ -#define XFS_BMAPI_COWFORK 0x200 +#define XFS_BMAPI_COWFORK (1u << 8) /* Skip online discard of freed extents */ -#define XFS_BMAPI_NODISCARD 0x1000 +#define XFS_BMAPI_NODISCARD (1u << 9) /* Do not update the rmap btree. Used for reconstructing bmbt from rmapbt. */ -#define XFS_BMAPI_NORMAP 0x2000 +#define XFS_BMAPI_NORMAP (1u << 10) #define XFS_BMAPI_FLAGS \ { XFS_BMAPI_ENTIRE, "ENTIRE" }, \ @@ -121,7 +106,7 @@ static inline int xfs_bmapi_aflag(int w) (w == XFS_COW_FORK ? XFS_BMAPI_COWFORK : 0)); } -static inline int xfs_bmapi_whichfork(int bmapi_flags) +static inline int xfs_bmapi_whichfork(uint32_t bmapi_flags) { if (bmapi_flags & XFS_BMAPI_COWFORK) return XFS_COW_FORK; @@ -139,16 +124,16 @@ static inline int xfs_bmapi_whichfork(int bmapi_flags) /* * Flags for xfs_bmap_add_extent*. */ -#define BMAP_LEFT_CONTIG (1 << 0) -#define BMAP_RIGHT_CONTIG (1 << 1) -#define BMAP_LEFT_FILLING (1 << 2) -#define BMAP_RIGHT_FILLING (1 << 3) -#define BMAP_LEFT_DELAY (1 << 4) -#define BMAP_RIGHT_DELAY (1 << 5) -#define BMAP_LEFT_VALID (1 << 6) -#define BMAP_RIGHT_VALID (1 << 7) -#define BMAP_ATTRFORK (1 << 8) -#define BMAP_COWFORK (1 << 9) +#define BMAP_LEFT_CONTIG (1u << 0) +#define BMAP_RIGHT_CONTIG (1u << 1) +#define BMAP_LEFT_FILLING (1u << 2) +#define BMAP_RIGHT_FILLING (1u << 3) +#define BMAP_LEFT_DELAY (1u << 4) +#define BMAP_RIGHT_DELAY (1u << 5) +#define BMAP_LEFT_VALID (1u << 6) +#define BMAP_RIGHT_VALID (1u << 7) +#define BMAP_ATTRFORK (1u << 8) +#define BMAP_COWFORK (1u << 9) #define XFS_BMAP_EXT_FLAGS \ { BMAP_LEFT_CONTIG, "LC" }, \ @@ -158,17 +143,22 @@ static inline int xfs_bmapi_whichfork(int bmapi_flags) { BMAP_ATTRFORK, "ATTR" }, \ { BMAP_COWFORK, "COW" } +/* Return true if the extent is an allocated extent, written or not. */ +static inline bool xfs_bmap_is_real_extent(struct xfs_bmbt_irec *irec) +{ + return irec->br_startblock != HOLESTARTBLOCK && + irec->br_startblock != DELAYSTARTBLOCK && + !isnullstartblock(irec->br_startblock); +} /* * Return true if the extent is a real, allocated extent, or false if it is a * delayed allocation, and unwritten extent or a hole. */ -static inline bool xfs_bmap_is_real_extent(struct xfs_bmbt_irec *irec) +static inline bool xfs_bmap_is_written_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); + return xfs_bmap_is_real_extent(irec) && + irec->br_state != XFS_EXT_UNWRITTEN; } /* @@ -180,13 +170,10 @@ static inline bool xfs_bmap_is_real_extent(struct xfs_bmbt_irec *irec) void xfs_trim_extent(struct xfs_bmbt_irec *irec, xfs_fileoff_t bno, xfs_filblks_t len); +unsigned int xfs_bmap_compute_attr_offset(struct xfs_mount *mp); int xfs_bmap_add_attrfork(struct xfs_inode *ip, int size, int rsvd); -int xfs_bmap_set_attrforkoff(struct xfs_inode *ip, int size, int *version); void xfs_bmap_local_to_extents_empty(struct xfs_trans *tp, struct xfs_inode *ip, int whichfork); -void __xfs_bmap_add_free(struct xfs_trans *tp, xfs_fsblock_t bno, - xfs_filblks_t len, const 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); @@ -194,18 +181,17 @@ int xfs_bmap_last_before(struct xfs_trans *tp, struct xfs_inode *ip, xfs_fileoff_t *last_block, 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_bmapi_read(struct xfs_inode *ip, xfs_fileoff_t bno, xfs_filblks_t len, struct xfs_bmbt_irec *mval, - int *nmap, int flags); + int *nmap, uint32_t flags); int xfs_bmapi_write(struct xfs_trans *tp, struct xfs_inode *ip, - xfs_fileoff_t bno, xfs_filblks_t len, int flags, + xfs_fileoff_t bno, xfs_filblks_t len, uint32_t flags, 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_fileoff_t bno, xfs_filblks_t *rlen, uint32_t 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_fileoff_t bno, xfs_filblks_t len, uint32_t flags, 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, @@ -222,7 +208,8 @@ int xfs_bmap_can_insert_extents(struct xfs_inode *ip, xfs_fileoff_t off, int xfs_bmap_insert_extents(struct xfs_trans *tp, struct xfs_inode *ip, xfs_fileoff_t *next_fsb, xfs_fileoff_t offset_shift_fsb, bool *done, xfs_fileoff_t stop_fsb); -int xfs_bmap_split_extent(struct xfs_inode *ip, xfs_fileoff_t split_offset); +int xfs_bmap_split_extent(struct xfs_trans *tp, struct xfs_inode *ip, + xfs_fileoff_t split_offset); 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, @@ -234,16 +221,6 @@ int xfs_bmap_add_extent_unwritten_real(struct xfs_trans *tp, struct xfs_iext_cursor *icur, struct xfs_btree_cur **curp, struct xfs_bmbt_irec *new, int *logflagsp); -static inline void -xfs_bmap_add_free( - struct xfs_trans *tp, - xfs_fsblock_t bno, - xfs_filblks_t len, - const struct xfs_owner_info *oinfo) -{ - __xfs_bmap_add_free(tp, bno, len, oinfo, false); -} - enum xfs_bmap_intent_type { XFS_BMAP_MAP = 1, XFS_BMAP_UNMAP, @@ -252,8 +229,8 @@ enum xfs_bmap_intent_type { struct xfs_bmap_intent { struct list_head bi_list; enum xfs_bmap_intent_type bi_type; - struct xfs_inode *bi_owner; int bi_whichfork; + struct xfs_inode *bi_owner; struct xfs_bmbt_irec bi_bmap; }; @@ -266,7 +243,7 @@ void xfs_bmap_map_extent(struct xfs_trans *tp, struct xfs_inode *ip, void xfs_bmap_unmap_extent(struct xfs_trans *tp, struct xfs_inode *ip, struct xfs_bmbt_irec *imap); -static inline int xfs_bmap_fork_to_state(int whichfork) +static inline uint32_t xfs_bmap_fork_to_state(int whichfork) { switch (whichfork) { case XFS_ATTR_FORK: @@ -283,6 +260,11 @@ xfs_failaddr_t xfs_bmap_validate_extent(struct xfs_inode *ip, int whichfork, 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); + uint32_t flags); + +extern struct kmem_cache *xfs_bmap_intent_cache; + +int __init xfs_bmap_intent_init_cache(void); +void xfs_bmap_intent_destroy_cache(void); #endif /* __XFS_BMAP_H__ */ |