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| author | Chuck Ebbert <cebbert@redhat.com> | 2010-01-30 20:28:19 +0100 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2010-01-30 20:28:19 +0100 |
| commit | 9e9432c267e4047db98b9d4fba95099c6effcef9 (patch) | |
| tree | 4e261dd44d4f5129f64696a87d448ad89c106110 | |
| parent | 1d6165851cd8e3f919d446cd6da35dee44e8837e (diff) | |
| download | linux-stable-9e9432c267e4047db98b9d4fba95099c6effcef9.tar.gz linux-stable-9e9432c267e4047db98b9d4fba95099c6effcef9.tar.bz2 linux-stable-9e9432c267e4047db98b9d4fba95099c6effcef9.zip | |
block: fix bugs in bio-integrity mempool usage
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>
| -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)) { |