From bd432417681a224d9fa4a9d43be7d4edc82135b2 Mon Sep 17 00:00:00 2001 From: Javier González Date: Fri, 13 Oct 2017 14:46:06 +0200 Subject: lightnvm: pblk: fix min size for page mempool MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit pblk uses an internal page mempool for allocating pages on internal bios. The main two users of this memory pool are partial reads (reads with some sectors in cache and some on media) and padded writes, which need to add dummy pages to an existing bio already containing valid data (and with a large enough bioset allocated). In both cases, the maximum number of pages per bio is defined by the maximum number of physical sectors supported by the underlying device. This patch fixes a bad mempool allocation, where the min_nr of elements on the pool was fixed (to 16), which is lower than the maximum number of sectors supported by NVMe (as of the time for this patch). Instead, use the maximum number of allowed sectors reported by the device. Reported-by: Jens Axboe Signed-off-by: Javier González Signed-off-by: Matias Bjørling Signed-off-by: Jens Axboe --- drivers/lightnvm/pblk-read.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/lightnvm/pblk-read.c') diff --git a/drivers/lightnvm/pblk-read.c b/drivers/lightnvm/pblk-read.c index ee8efb55b330..402c732f0970 100644 --- a/drivers/lightnvm/pblk-read.c +++ b/drivers/lightnvm/pblk-read.c @@ -238,7 +238,7 @@ static int pblk_fill_partial_read_bio(struct pblk *pblk, struct nvm_rq *rqd, kunmap_atomic(src_p); kunmap_atomic(dst_p); - mempool_free(src_bv.bv_page, pblk->page_pool); + mempool_free(src_bv.bv_page, pblk->page_bio_pool); hole = find_next_zero_bit(read_bitmap, nr_secs, hole + 1); } while (hole < nr_secs); -- cgit v1.2.3