diff options
Diffstat (limited to 'fs/xfs/xfs_bmap.h')
| -rw-r--r-- | fs/xfs/xfs_bmap.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/fs/xfs/xfs_bmap.h b/fs/xfs/xfs_bmap.h index 33b41f351225..f84bd7af43be 100644 --- a/fs/xfs/xfs_bmap.h +++ b/fs/xfs/xfs_bmap.h @@ -127,6 +127,16 @@ static inline void xfs_bmap_init(xfs_bmap_free_t *flp, xfs_fsblock_t *fbp) { BMAP_RIGHT_FILLING, "RF" }, \ { BMAP_ATTRFORK, "ATTR" } + +/* + * 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. + */ +#define XFS_BMAP_MAX_SHIFT_EXTENTS 1 + #ifdef DEBUG void xfs_bmap_trace_exlist(struct xfs_inode *ip, xfs_extnum_t cnt, int whichfork, unsigned long caller_ip); @@ -169,5 +179,10 @@ int xfs_bunmapi(struct xfs_trans *tp, struct xfs_inode *ip, int xfs_check_nostate_extents(struct xfs_ifork *ifp, xfs_extnum_t idx, xfs_extnum_t num); uint xfs_default_attroffset(struct xfs_inode *ip); +int xfs_bmap_shift_extents(struct xfs_trans *tp, struct xfs_inode *ip, + int *done, xfs_fileoff_t start_fsb, + xfs_fileoff_t offset_shift_fsb, xfs_extnum_t *current_ext, + xfs_fsblock_t *firstblock, struct xfs_bmap_free *flist, + int num_exts); #endif /* __XFS_BMAP_H__ */ |