+ mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch added to -mm tree

+ mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm: kvfree the swap cluster info if the swap file is unsatisfactory
has been added to the -mm tree.  Its filename is
     mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch

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------------------------------------------------------
From: "Darrick J. Wong" <darrick.wong@oracle.com>
Subject: mm: kvfree the swap cluster info if the swap file is unsatisfactory

If initializing a small swap file fails because the swap file has a
problem (holes, etc.) then we need to free the cluster info as part of
cleanup.  Unfortunately a previous patch changed the code to use kvzalloc
but did not change all the vfree calls to use kvfree.

Found by running generic/357 from xfstests.

Link: http://lkml.kernel.org/r/20170831233515.GR3775@magnolia
Fixes: 54f180d3c181 ("mm, swap: use kvzalloc to allocate some swap data structures")
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>	[4.12+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/swapfile.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN mm/swapfile.c~mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory mm/swapfile.c
--- a/mm/swapfile.c~mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory
+++ a/mm/swapfile.c
@@ -3290,7 +3290,7 @@ bad_swap:
 	p->flags = 0;
 	spin_unlock(&swap_lock);
 	vfree(swap_map);
-	vfree(cluster_info);
+	kvfree(cluster_info);
 	if (swap_file) {
 		if (inode && S_ISREG(inode->i_mode)) {
 			inode_unlock(inode);
_

Patches currently in -mm which might be from darrick.wong@oracle.com are

mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch