diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-06-16 11:24:17 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-06-16 11:24:17 +0200 |
commit | 9583f3d9c00974911daf227cbaa12d6c1caaabad (patch) | |
tree | f37466204ecbfea37c7d567fd06c9bece0cc663d /block/blk-core.c | |
parent | 962cf36c5bf6d2840b8d66ee9a606fae2f540bbd (diff) | |
parent | 066519068ad2fbe98c7f45552b1f592903a9c8c8 (diff) | |
download | blackbird-op-linux-9583f3d9c00974911daf227cbaa12d6c1caaabad.tar.gz blackbird-op-linux-9583f3d9c00974911daf227cbaa12d6c1caaabad.zip |
Merge branch 'linus' into core/softirq
Diffstat (limited to 'block/blk-core.c')
-rw-r--r-- | block/blk-core.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 75fdc65136e8..af094ff48357 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -806,35 +806,32 @@ static struct request *get_request_wait(struct request_queue *q, int rw_flags, rq = get_request(q, rw_flags, bio, GFP_NOIO); while (!rq) { DEFINE_WAIT(wait); + struct io_context *ioc; struct request_list *rl = &q->rq; prepare_to_wait_exclusive(&rl->wait[rw], &wait, TASK_UNINTERRUPTIBLE); - rq = get_request(q, rw_flags, bio, GFP_NOIO); - - if (!rq) { - struct io_context *ioc; + blk_add_trace_generic(q, bio, rw, BLK_TA_SLEEPRQ); - blk_add_trace_generic(q, bio, rw, BLK_TA_SLEEPRQ); - - __generic_unplug_device(q); - spin_unlock_irq(q->queue_lock); - io_schedule(); + __generic_unplug_device(q); + spin_unlock_irq(q->queue_lock); + io_schedule(); - /* - * After sleeping, we become a "batching" process and - * will be able to allocate at least one request, and - * up to a big batch of them for a small period time. - * See ioc_batching, ioc_set_batching - */ - ioc = current_io_context(GFP_NOIO, q->node); - ioc_set_batching(q, ioc); + /* + * After sleeping, we become a "batching" process and + * will be able to allocate at least one request, and + * up to a big batch of them for a small period time. + * See ioc_batching, ioc_set_batching + */ + ioc = current_io_context(GFP_NOIO, q->node); + ioc_set_batching(q, ioc); - spin_lock_irq(q->queue_lock); - } + spin_lock_irq(q->queue_lock); finish_wait(&rl->wait[rw], &wait); - } + + rq = get_request(q, rw_flags, bio, GFP_NOIO); + }; return rq; } |