tree 14caffdac252bbebf68678b808e22ca13f7a3302
parent 9dc6c806b3c4812619e305685b3c86835bf784ab
author Shaohua Li <shli@fb.com> 1431107488 -0700
committer Jens Axboe <axboe@fb.com> 1431116234 -0600

blk: clean up plug

Current code looks like inner plug gets flushed with a
blk_finish_plug(). Actually it's a nop. All requests/callbacks are added
to current->plug, while only outmost plug is assigned to current->plug.
So inner plug always has empty request/callback list, which makes
blk_flush_plug_list() a nop. This tries to make the code more clear.

Signed-off-by: Shaohua Li <shli@fb.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>