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authorMatthew Wilcox (Oracle) <willy@infradead.org>2021-01-29 07:38:57 +0300
committerJens Axboe <axboe@kernel.dk>2021-02-27 01:49:51 +0300
commit5f7136db82996089cdfb2939c7664b29e9da141d (patch)
treef6fb9ac2dafb2ca03002f6c86bc0fb1062fadcfa /drivers/md/dm-io.c
parent94d4bffdda21baa2c749bc229c41811a7559dd15 (diff)
downloadlinux-5f7136db82996089cdfb2939c7664b29e9da141d.tar.xz
block: Add bio_max_segs
It's often inconvenient to use BIO_MAX_PAGES due to min() requiring the sign to be the same. Introduce bio_max_segs() and change BIO_MAX_PAGES to be unsigned to make it easier for the users. Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm-io.c')
-rw-r--r--drivers/md/dm-io.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 4312007d2d34..2d3cda0acacb 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -341,8 +341,8 @@ static void do_region(int op, int op_flags, unsigned region,
num_bvecs = 1;
break;
default:
- num_bvecs = min_t(int, BIO_MAX_PAGES,
- dm_sector_div_up(remaining, (PAGE_SIZE >> SECTOR_SHIFT)));
+ num_bvecs = bio_max_segs(dm_sector_div_up(remaining,
+ (PAGE_SIZE >> SECTOR_SHIFT)));
}
bio = bio_alloc_bioset(GFP_NOIO, num_bvecs, &io->client->bios);