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bio: make freeing of ->bi_io_vec conditional in bio_free()

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The empty barrier patches do not carry data, so they have no
iovec attached.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2007-07-18 13:18:08 +02:00
parent 2b94de552e
commit 992c5ddaf1
1 changed files with 6 additions and 3 deletions
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9
fs/bio.c
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@ -109,11 +109,14 @@ static inline struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned lon
void bio_free(struct bio *bio, struct bio_set *bio_set)
{
const int pool_idx = BIO_POOL_IDX(bio);
if (bio->bi_io_vec) {
const int pool_idx = BIO_POOL_IDX(bio);
BIO_BUG_ON(pool_idx >= BIOVEC_NR_POOLS);
BIO_BUG_ON(pool_idx >= BIOVEC_NR_POOLS);
mempool_free(bio->bi_io_vec, bio_set->bvec_pools[pool_idx]);
}
mempool_free(bio->bi_io_vec, bio_set->bvec_pools[pool_idx]);
mempool_free(bio, bio_set->bio_pool);
}