diff options
| author | Chuck Ebbert <cebbert@redhat.com> | 2010-01-30 20:28:19 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-02-09 04:50:58 -0800 |
| commit | 0ae2b7de3957a477ec0f332c4da5633499b4d3aa (patch) | |
| tree | a5e57a8f53adaf86fe2c45feadf8db39e2571248 | |
| parent | 964814800330216ded04e5a9a21f95d7998dfd62 (diff) | |
block: fix bugs in bio-integrity mempool usage
commit 9e9432c267e4047db98b9d4fba95099c6effcef9 upstream.
Fix two bugs in the bio integrity code:
use_bip_pool() always returns 0 because it checks against the wrong limit,
causing the mempool to be used only when regular allocation fails.
When the mempool is used as a fallback we don't free the data properly.
Signed-Off-By: Chuck Ebbert <cebbert@redhat.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | fs/bio-integrity.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c index 49a34e7f7306..a16f29e888cd 100644 --- a/fs/bio-integrity.c +++ b/fs/bio-integrity.c @@ -61,7 +61,7 @@ static inline unsigned int vecs_to_idx(unsigned int nr) static inline int use_bip_pool(unsigned int idx) { - if (idx == BIOVEC_NR_POOLS) + if (idx == BIOVEC_MAX_IDX) return 1; return 0; @@ -95,6 +95,7 @@ struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *bio, /* Use mempool if lower order alloc failed or max vecs were requested */ if (bip == NULL) { + idx = BIOVEC_MAX_IDX; /* so we free the payload properly later */ bip = mempool_alloc(bs->bio_integrity_pool, gfp_mask); if (unlikely(bip == NULL)) { |