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@xxxxxxxxxx>
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@xxxxxxxxxx>
Reviewed-by: "Huang, Ying" <ying.huang@xxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [4.12+]
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxxxxx are
mm-kvfree-the-swap-cluster-info-if-the-swap-file-is-unsatisfactory.patch
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