writeback: Separate out wb_get_lookup() from wb_get_create()
authorTejun Heo <tj@kernel.org>
Mon, 26 Aug 2019 16:06:54 +0000 (09:06 -0700)
committerJens Axboe <axboe@kernel.dk>
Tue, 27 Aug 2019 15:22:38 +0000 (09:22 -0600)
commited288dc0d4aa29f65bd25b31b5cb866aa5664ff9
treefbca2981025e2f6300933da4de6423ee3298b4a0
parent34f8fe501f0624de115d087680c84000b5d9abc9
writeback: Separate out wb_get_lookup() from wb_get_create()

Separate out wb_get_lookup() which doesn't try to create one if there
isn't already one from wb_get_create().  This will be used by later
patches.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
include/linux/backing-dev.h
mm/backing-dev.c