block: Check for gaps on front and back merges

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We are checking for gaps to previous bio_vec, which can
only detect back merges gaps. Moreover, at the point where
we check for a gap, we don't know if we will attempt a back
or a front merge. Thus, check for gap to prev in a back merge
attempt and check for a gap to next in a front merge attempt.

Signed-off-by: Jens Axboe <axboe@fb.com>
[sagig: Minor rename change]
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>

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Jens Axboe 2015-09-03 19:28:20 +03:00

parent 5fdb7e1b97

commit 5e7c4274a7

2 changed files with 26 additions and 13 deletions

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include/linux/blkdev.h

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