[PATCH v5 04/10] xfs: make xfs_free_eofblocks() non-static, return EAGAIN on trylock failure

Brian Foster
2012-10-05T14:14:10Z

Turn xfs_free_eofblocks() into a non-static function, return EAGAIN to
indicate trylock failure and make sure this error is not propagated in
xfs_release().

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
---
fs/xfs/xfs_vnodeops.c | 6 +++---
fs/xfs/xfs_vnodeops.h | 1 +
2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 1f3c53d8..21665fa 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -151,7 +151,7 @@ xfs_readlink(
* when the link count isn't zero and by xfs_dm_punch_hole() when
* punching a hole to EOF.
*/
-STATIC int
+int
xfs_free_eofblocks(
xfs_mount_t *mp,
xfs_inode_t *ip,
@@ -200,7 +200,7 @@ xfs_free_eofblocks(
if (need_iolock) {
if (!xfs_ilock_nowait(ip, XFS_IOLOCK_EXCL)) {
xfs_trans_cancel(tp, 0);
- return 0;
+ return EAGAIN;
}
}

@@ -463,7 +463,7 @@ xfs_release(
return 0;

error = xfs_free_eofblocks(mp, ip, true);
- if (error)
+ if (error && error != EAGAIN)
return error;

/* delalloc blocks after truncation means it really is dirty */
diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h
index 447e146..52fafc4 100644
--- a/fs/xfs/xfs_vnodeops.h
+++ b/fs/xfs/xfs_vnodeops.h
@@ -57,5 +57,6 @@ int xfs_flush_pages(struct xfs_inode *ip, xfs_off_t first,
int xfs_wait_on_pages(struct xfs_inode *ip, xfs_off_t first, xfs_off_t last);

int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
+int xfs_free_eofblocks(struct xfs_mount *, struct xfs_inode *, bool);

#endif /* _XFS_VNODEOPS_H */
--
1.7.7.6