diff options
| author | Heiner Litz <hlitz@ucsc.edu> | 2019-06-21 12:11:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-26 10:14:09 +0300 |
| commit | 010bfbc9342468b419247bae250e72a81e5828d1 (patch) | |
| tree | 0f702652084364eb28e859381379c6ef59ee678b /drivers/lightnvm | |
| parent | 762bba1b7ee755977d3f8d3d1140a54eb5d8bd07 (diff) | |
| download | linux-010bfbc9342468b419247bae250e72a81e5828d1.tar.xz | |
lightnvm: pblk: fix freeing of merged pages
[ Upstream commit 510fd8ea98fcb586c01aef93d87c060a159ac30a ]
bio_add_pc_page() may merge pages when a bio is padded due to a flush.
Fix iteration over the bio to free the correct pages in case of a merge.
Signed-off-by: Heiner Litz <hlitz@ucsc.edu>
Reviewed-by: Javier González <javier@javigon.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/lightnvm')
| -rw-r--r-- | drivers/lightnvm/pblk-core.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c index 95be6e36c7dd..80710c62ac29 100644 --- a/drivers/lightnvm/pblk-core.c +++ b/drivers/lightnvm/pblk-core.c @@ -288,14 +288,16 @@ void pblk_free_rqd(struct pblk *pblk, struct nvm_rq *rqd, int type) void pblk_bio_free_pages(struct pblk *pblk, struct bio *bio, int off, int nr_pages) { - struct bio_vec bv; - int i; - - WARN_ON(off + nr_pages != bio->bi_vcnt); - - for (i = off; i < nr_pages + off; i++) { - bv = bio->bi_io_vec[i]; - mempool_free(bv.bv_page, &pblk->page_bio_pool); + struct bio_vec *bv; + struct page *page; + int i, e, nbv = 0; + + for (i = 0; i < bio->bi_vcnt; i++) { + bv = &bio->bi_io_vec[i]; + page = bv->bv_page; + for (e = 0; e < bv->bv_len; e += PBLK_EXPOSED_PAGE_SIZE, nbv++) + if (nbv >= off) + mempool_free(page++, &pblk->page_bio_pool); } } |