xfs: fix up asserts in xfs_iflush_fork

Remove asserts in xfs_iflush_fork that would call xfs_iext_get_ext
with a potentially invalid extent buffer index.

Based on an earlier patch from Lachlan McIlroy.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lachlan McIlroy <lmcilroy@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index c96bdeda23bb..6f318eeac401 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2557,12 +2557,9 @@ xfs_iflush_fork(
         case XFS_DINODE_FMT_EXTENTS:
                 ASSERT((ifp->if_flags & XFS_IFEXTENTS) ||
                        !(iip->ili_format.ilf_fields & extflag[whichfork]));
-                ASSERT((xfs_iext_get_ext(ifp, 0) != NULL) ||
-                        (ifp->if_bytes == 0));
-                ASSERT((xfs_iext_get_ext(ifp, 0) == NULL) ||
-                        (ifp->if_bytes > 0));
                 if ((iip->ili_format.ilf_fields & extflag[whichfork]) &&
                     (ifp->if_bytes > 0)) {
+                        ASSERT(xfs_iext_get_ext(ifp, 0));
                         ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) > 0);
                         (void)xfs_iextents_copy(ip, (xfs_bmbt_rec_t *)cp,
                                 whichfork);