block: make blk_init_free_list and elevator_init idempotent
commit1abec4fdbb142e3ccb6ce99832fae42129134a96
authorMike Snitzer <snitzer@redhat.com>
Tue, 25 May 2010 17:15:15 +0000 (25 13:15 -0400)
committerJens Axboe <jaxboe@fusionio.com>
Fri, 4 Jun 2010 11:47:06 +0000 (4 13:47 +0200)
tree5adffee38a35b3639282da545846171715e9d689
parentc86d1b8ae622e1ea5d20e98bd72fbd7d9dd69016
block: make blk_init_free_list and elevator_init idempotent

blk_init_allocated_queue_node may fail and the caller _could_ retry.
Accommodate the unlikely event that blk_init_allocated_queue_node is
called on an already initialized (possibly partially) request_queue.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
block/blk-core.c
block/elevator.c