tree 90142ec5d30b1a74ded14ac013408c7390caeb1b
parent 5b36ad6000ddea390aca3c3b67ead7616ace2ffc
author Tejun Heo <tj@kernel.org> 1241751242 +0900
committer Jens Axboe <jens.axboe@oracle.com> 1242028335 +0200

hd: dequeue and track in-flight request

hd has at most single request in flight.  Till now, whenever it needs
to access the in-flight request it called elv_next_request().  This
patch makes hd track the in-flight request directly and dequeue it
when processing starts.  The added complexity is minimal and this will
help future block layer changes.

[ Impact: dequeue in-flight request, one elv_next_request() per request ]

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>