[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, 3 deletions

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 3541d19859e1..7d1ab3967b8e 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -1421,7 +1421,7 @@ xfs_itrunc_trace(
  * must be called again with all the same restrictions as the initial
  * call.
  */
-void
+int
 xfs_itruncate_start(
         xfs_inode_t     *ip,
         uint            flags,
@@ -1431,6 +1431,7 @@ xfs_itruncate_start(
         xfs_off_t       toss_start;
         xfs_mount_t     *mp;
         bhv_vnode_t     *vp;
+        int             error = 0;
 
         ASSERT(ismrlocked(&ip->i_iolock, MR_UPDATE) != 0);
         ASSERT((new_size == 0) || (new_size <= ip->i_d.di_size));
@@ -1468,7 +1469,7 @@ xfs_itruncate_start(
                  * file size, so there is no way that the data extended
                  * out there.
                  */
-                return;
+                return 0;
         }
         last_byte = xfs_file_last_byte(ip);
         xfs_itrunc_trace(XFS_ITRUNC_START, ip, flags, new_size, toss_start,
@@ -1477,7 +1478,7 @@ xfs_itruncate_start(
                 if (flags & XFS_ITRUNC_DEFINITE) {
                         bhv_vop_toss_pages(vp, toss_start, -1, FI_REMAPF_LOCKED);
                 } else {
-                        bhv_vop_flushinval_pages(vp, toss_start, -1, FI_REMAPF_LOCKED);
+                        error = bhv_vop_flushinval_pages(vp, toss_start, -1, FI_REMAPF_LOCKED);
                 }
         }
 
@@ -1486,6 +1487,7 @@ xfs_itruncate_start(
                 ASSERT(VN_CACHED(vp) == 0);
         }
 #endif
+        return error;
 }
 
 /*