[XFS] use KM_MAYFAIL in xfs_mountfs

Use KM_MAYFAIL for the m_perag allocation, we can deal with the error
easily and blocking forever during mount is not a good idea either.

SGI-PV: 981498

SGI-Modid: xfs-linux-melb:xfs-kern:31837a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 081fb6a..a4503f5 100644 (file)
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1052,8 +1052,10 @@ xfs_mountfs(
         * Allocate and initialize the per-ag data.
         */
        init_rwsem(&mp->m_peraglock);
-       mp->m_perag =
-               kmem_zalloc(sbp->sb_agcount * sizeof(xfs_perag_t), KM_SLEEP);
+       mp->m_perag = kmem_zalloc(sbp->sb_agcount * sizeof(xfs_perag_t),
+                                 KM_MAYFAIL);
+       if (!mp->m_perag)
+               goto error1;
 
        mp->m_maxagi = xfs_initialize_perag(mp, sbp->sb_agcount);