> On 15 May 2019, at 02.39, Heiner Litz <[email protected]> wrote: > > 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 <[email protected]> > --- > drivers/lightnvm/pblk-core.c | 18 ++++++++++-------- > 1 file changed, 10 insertions(+), 8 deletions(-) > > diff --git a/drivers/lightnvm/pblk-core.c b/drivers/lightnvm/pblk-core.c > index 773537804319..88d61b27a9ab 100644 > --- a/drivers/lightnvm/pblk-core.c > +++ b/drivers/lightnvm/pblk-core.c > @@ -323,14 +323,16 @@ 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); > } > } > > -- > 2.17.1
Looks good to me. Reviewed-by: Javier González <[email protected]>
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