[PATCH V10 15/19] block: always define BIO_MAX_PAGES as 256

Ming Lei
2018-11-15T08:57:33Z

Now multi-page bvec can cover CONFIG_THP_SWAP, so we don't need to
increase BIO_MAX_PAGES for it.

Cc: Dave Chinner <dchinner@redhat.com>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: dm-devel@redhat.com
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Cc: Shaohua Li <shli@kernel.org>
Cc: linux-raid@vger.kernel.org
Cc: linux-erofs@lists.ozlabs.org
Cc: David Sterba <dsterba@suse.com>
Cc: linux-btrfs@vger.kernel.org
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: linux-xfs@vger.kernel.org
Cc: Gao Xiang <gaoxiang25@huawei.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: linux-ext4@vger.kernel.org
Cc: Coly Li <colyli@suse.de>
Cc: linux-bcache@vger.kernel.org
Cc: Boaz Harrosh <ooo@electrozaur.com>
Cc: Bob Peterson <rpeterso@redhat.com>
Cc: cluster-devel@redhat.com
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
include/linux/bio.h | 8 --------
1 file changed, 8 deletions(-)

diff --git a/include/linux/bio.h b/include/linux/bio.h
index 5040e9a2eb09..277921ad42e7 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -34,15 +34,7 @@
#define BIO_BUG_ON
#endif

-#ifdef CONFIG_THP_SWAP
-#if HPAGE_PMD_NR > 256
-#define BIO_MAX_PAGES HPAGE_PMD_NR
-#else
#define BIO_MAX_PAGES 256
-#endif
-#else
-#define BIO_MAX_PAGES 256
-#endif

#define bio_prio(bio) (bio)->bi_ioprio
#define bio_set_prio(bio, prio) ((bio)->bi_ioprio = prio)
--
2.9.5