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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-16 16:11:28 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-16 16:11:28 -0800 |
| commit | 138a6d7ea2deb3080116a4f99019e181b62e5ce5 (patch) | |
| tree | 424622059405352935fbf1dde015a1e130b56198 /drivers/md/persistent-data/dm-array.c | |
| parent | 4fc6069e7df873bda9baabe0fa9f0be23363159a (diff) | |
| parent | 319e2e3f63c348a9b66db4667efa73178e18b17d (diff) | |
Merge 3.13-rc4 into char-misc-next
We want these fixes in here.
Diffstat (limited to 'drivers/md/persistent-data/dm-array.c')
| -rw-r--r-- | drivers/md/persistent-data/dm-array.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/md/persistent-data/dm-array.c b/drivers/md/persistent-data/dm-array.c index af96e24ec328..1d75b1dc1e2e 100644 --- a/drivers/md/persistent-data/dm-array.c +++ b/drivers/md/persistent-data/dm-array.c @@ -317,8 +317,16 @@ static int shadow_ablock(struct dm_array_info *info, dm_block_t *root, * The shadow op will often be a noop. Only insert if it really * copied data. */ - if (dm_block_location(*block) != b) + if (dm_block_location(*block) != b) { + /* + * dm_tm_shadow_block will have already decremented the old + * block, but it is still referenced by the btree. We + * increment to stop the insert decrementing it below zero + * when overwriting the old value. + */ + dm_tm_inc(info->btree_info.tm, b); r = insert_ablock(info, index, *block, root); + } return r; } |