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dm btree: fix leak of bufio-backed block in btree_split_beneath error path

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btree_split_beneath()'s error path had an outstanding FIXME that speaks
directly to the potential for _not_ cleaning up a previously allocated
bufio-backed block.

Fix this by releasing the previously allocated bufio block using
unlock_block().

Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <thornber@redhat.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Mike Snitzer 2015-10-22 10:56:40 -04:00
parent 2871c69e02
commit 4dcb8b57df
1 changed files with 1 additions and 1 deletions
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2
drivers/md/persistent-data/dm-btree.c
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@ -523,7 +523,7 @@ static int btree_split_beneath(struct shadow_spine *s, uint64_t key)
r = new_block(s->info, &right); r = new_block(s->info, &right);
if (r < 0) { if (r < 0) {
/* FIXME: put left */ unlock_block(s->info, left);
return r; return r;
} }