[XFS] propogate return codes from flush routines

This patch handles error return values in fs_flush_pages and
fs_flushinval_pages. It changes the prototype of fs_flushinval_pages so we
can propogate the errors and handle them at higher layers. I also modified
xfs_itruncate_start so that it could propogate the error further.

SGI-PV: 961990
SGI-Modid: xfs-linux-melb:xfs-kern:28231a

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Stewart Smith <stewart@flamingspork.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/fs/xfs/xfs_utils.c b/fs/xfs/xfs_utils.c
index 948b0c892e96..20ffec308e1e 100644
--- a/fs/xfs/xfs_utils.c
+++ b/fs/xfs/xfs_utils.c
@@ -420,7 +420,11 @@ xfs_truncate_file(
          * in a transaction.
          */
         xfs_ilock(ip, XFS_IOLOCK_EXCL);
-        xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, (xfs_fsize_t)0);
+        error = xfs_itruncate_start(ip, XFS_ITRUNC_DEFINITE, (xfs_fsize_t)0);
+        if (error) {
+                xfs_iunlock(ip, XFS_IOLOCK_EXCL);
+                return error;
+        }
 
         tp = xfs_trans_alloc(mp, XFS_TRANS_TRUNCATE_FILE);
         if ((error = xfs_trans_reserve(tp, 0, XFS_ITRUNCATE_LOG_RES(mp), 0,