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| author | David Chinner <dgc@sgi.com> | 2007-05-24 15:22:19 +1000 |
|---|---|---|
| committer | Tim Shimmin <tes@chook.melbourne.sgi.com> | 2007-07-14 15:23:40 +1000 |
| commit | 92dfe8d266eaf35a50607a0e0dcf525e1d367c80 (patch) | |
| tree | a9149b1bcad2142b14b8b25c06c64a0ae7399f64 /fs/xfs/xfs_rw.h | |
| parent | 511105b3d7c2440ee84fc3f90d200569aac88162 (diff) | |
| download | op-kernel-dev-92dfe8d266eaf35a50607a0e0dcf525e1d367c80.zip op-kernel-dev-92dfe8d266eaf35a50607a0e0dcf525e1d367c80.tar.gz | |
[XFS] Make hole punching at EOF atomic.
If hole punching at EOF is done as two steps (i.e. truncate then extend)
the file is in a transient state between the two steps where an
application can see the incorrect file size. Punching a hole to EOF needs
to be treated in teh same way as all other hole punching cases so that the
file size is never seen to change.
SGI-PV: 962012
SGI-Modid: xfs-linux-melb:xfs-kern:28641a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_rw.h')
| -rw-r--r-- | fs/xfs/xfs_rw.h | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h index 188b296..ba74000 100644 --- a/fs/xfs/xfs_rw.h +++ b/fs/xfs/xfs_rw.h @@ -72,6 +72,12 @@ xfs_fsb_to_db_io(struct xfs_iocore *io, xfs_fsblock_t fsb) } /* + * Flags for xfs_free_eofblocks + */ +#define XFS_FREE_EOF_LOCK (1<<0) +#define XFS_FREE_EOF_NOLOCK (1<<1) + +/* * Prototypes for functions in xfs_rw.c. */ extern int xfs_write_clear_setuid(struct xfs_inode *ip); @@ -91,10 +97,12 @@ extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp, extern int xfs_rwlock(bhv_desc_t *bdp, bhv_vrwlock_t write_lock); extern void xfs_rwunlock(bhv_desc_t *bdp, bhv_vrwlock_t write_lock); extern int xfs_setattr(bhv_desc_t *, bhv_vattr_t *vap, int flags, - cred_t *credp); + cred_t *credp); extern int xfs_change_file_space(bhv_desc_t *bdp, int cmd, xfs_flock64_t *bf, - xfs_off_t offset, cred_t *credp, int flags); + xfs_off_t offset, cred_t *credp, int flags); extern int xfs_set_dmattrs(bhv_desc_t *bdp, u_int evmask, u_int16_t state, - cred_t *credp); + cred_t *credp); +extern int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip, + int flags); #endif /* __XFS_RW_H__ */ |
