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| author | Tejun Heo <htejun@gmail.com> | 2006-02-08 01:01:31 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-08 07:52:58 -0800 |
| commit | 30e9656cc340035e102fea46e1908689494b042d (patch) | |
| tree | 5fc623ccad5a1f5b09ebc4b7e8d7c6bec8e485ac /include/linux/elevator.h | |
| parent | e5ea0a9fca5612808839dd4bcc41c46fc02451f9 (diff) | |
| download | blackbird-op-linux-30e9656cc340035e102fea46e1908689494b042d.tar.gz blackbird-op-linux-30e9656cc340035e102fea46e1908689494b042d.zip | |
[PATCH] block: implement elv_insert and use it (fix ordcolor flipping bug)
q->ordcolor must only be flipped on initial queueing of a hardbarrier
request.
Constructing ordered sequence and requeueing used to pass through
__elv_add_request() which flips q->ordcolor when it sees a barrier
request.
This patch separates out elv_insert() from __elv_add_request() and uses
elv_insert() when constructing ordered sequence and requeueing.
elv_insert() inserts the given request at the specified position and
does nothing else.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Jens Axboe <axboe@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/elevator.h')
| -rw-r--r-- | include/linux/elevator.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/elevator.h b/include/linux/elevator.h index 23fe746a1d51..18cf1f3e1184 100644 --- a/include/linux/elevator.h +++ b/include/linux/elevator.h @@ -82,6 +82,7 @@ struct elevator_queue extern void elv_dispatch_sort(request_queue_t *, struct request *); extern void elv_add_request(request_queue_t *, struct request *, int, int); extern void __elv_add_request(request_queue_t *, struct request *, int, int); +extern void elv_insert(request_queue_t *, struct request *, int); extern int elv_merge(request_queue_t *, struct request **, struct bio *); extern void elv_merge_requests(request_queue_t *, struct request *, struct request *); |
