From 992c5ddaf1b8b85d2252339c4c89adf7469c09ca Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Wed, 18 Jul 2007 13:18:08 +0200 Subject: [PATCH] bio: make freeing of ->bi_io_vec conditional in bio_free() The empty barrier patches do not carry data, so they have no iovec attached. Signed-off-by: Jens Axboe --- fs/bio.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/fs/bio.c b/fs/bio.c index ac987fc7acd9..d59ddbf79626 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -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); } -- 2.30.2