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authorJens Axboe <jens.axboe@oracle.com>2010-02-22 13:48:51 +0100
committerJens Axboe <jens.axboe@oracle.com>2010-02-22 13:48:51 +0100
commitf11cbd74c5ff3614f6390b4de67a6ffdc614c378 (patch)
tree6a30920ade9eeaac5bf6d6263b5d09712e882eb0 /fs/bio.c
parent429c42c9d246f5bda868495c09974312a0177328 (diff)
parentaea187c46f7d03ce985e55eb1398d0776a15b928 (diff)
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Merge branch 'master' into for-2.6.34
Diffstat (limited to 'fs/bio.c')
-rw-r--r--fs/bio.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/bio.c b/fs/bio.c
index 76e6713abf9..88094afc29e 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -78,7 +78,7 @@ static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size)
i = 0;
while (i < bio_slab_nr) {
- struct bio_slab *bslab = &bio_slabs[i];
+ bslab = &bio_slabs[i];
if (!bslab->slab && entry == -1)
entry = i;
@@ -542,13 +542,18 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
if (page == prev->bv_page &&
offset == prev->bv_offset + prev->bv_len) {
+ unsigned int prev_bv_len = prev->bv_len;
prev->bv_len += len;
if (q->merge_bvec_fn) {
struct bvec_merge_data bvm = {
+ /* prev_bvec is already charged in
+ bi_size, discharge it in order to
+ simulate merging updated prev_bvec
+ as new bvec. */
.bi_bdev = bio->bi_bdev,
.bi_sector = bio->bi_sector,
- .bi_size = bio->bi_size,
+ .bi_size = bio->bi_size - prev_bv_len,
.bi_rw = bio->bi_rw,
};