[XFS] Check return value of xfs_buf_get_noaddr()

We check the return value of all other calls to xfs_buf_get_noaddr().
Make sense to do it here too.

Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 2d57aae0e3104de0cca9a57e9624f97ce9bef7e8..4547608b46c47b678013bb135ff368730f8b39ed 100644 (file)
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -3034,6 +3034,8 @@ xfs_zero_remaining_bytes(
        bp = xfs_buf_get_noaddr(mp->m_sb.sb_blocksize,
                                XFS_IS_REALTIME_INODE(ip) ?
                                mp->m_rtdev_targp : mp->m_ddev_targp);
+       if (!bp)
+               return XFS_ERROR(ENOMEM);
 
        for (offset = startoff; offset <= endoff; offset = lastoffset + 1) {
                offset_fsb = XFS_B_TO_FSBT(mp, offset);