tree 8fcd492241c391279b3957fed2979c1d70aaa1e5
parent 54bb0ade6627a183c211345761ec46e4bf0048fe
author Shaohua Li <shli@fb.com> 1504242586 -0700
committer Jens Axboe <axboe@kernel.dk> 1504277074 -0600

block/loop: allow request merge for directio mode

Currently loop disables merge. While it makes sense for buffer IO mode,
directio mode can benefit from request merge. Without merge, loop could
send small size IO to underlayer disk and harm performance.

Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>