NFS: fsync() must exit with an error if page writeback failed
We need to ensure that if the call to filemap_write_and_wait_range()
fails, then we report that error back to the application.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index acb65e7..eb5eb8e 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -96,13 +96,15 @@
struct inode *inode = file->f_path.dentry->d_inode;
ret = filemap_write_and_wait_range(inode->i_mapping, start, end);
+ if (ret != 0)
+ goto out;
mutex_lock(&inode->i_mutex);
ret = nfs_file_fsync_commit(file, start, end, datasync);
if (!ret && !datasync)
/* application has asked for meta-data sync */
ret = pnfs_layoutcommit_inode(inode, true);
mutex_unlock(&inode->i_mutex);
-
+out:
return ret;
}