Messages in this thread Patch in this message | | | Date | Wed, 11 Oct 2006 15:19:43 +0400 | From | Vasily Tarasov <> | Subject | [PATCH] block layer: elv_iosched_show should get elv_list_lock |
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elv_iosched_show function iterates other elv_list, hence elv_list_lock should be got.
Also the question is: in elv_iosched_show, elv_iosched_store q->elevator->elevator_type construction is used without locking q->queue_lock. Is it expected?..
Signed-off-by: Vasily Tarasov <vtaras@openvz.org>
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--- linux-2.6.18/block/elevator.c.orig 2006-10-11 11:00:34.000000000 +0400 +++ linux-2.6.18/block/elevator.c 2006-10-11 15:08:20.000000000 +0400 @@ -892,7 +892,7 @@ ssize_t elv_iosched_show(request_queue_t struct list_head *entry; int len = 0; - spin_lock_irq(q->queue_lock); + spin_lock_irq(&elv_list_lock); list_for_each(entry, &elv_list) { struct elevator_type *__e; @@ -902,7 +902,7 @@ ssize_t elv_iosched_show(request_queue_t else len += sprintf(name+len, "%s ", __e->elevator_name); } - spin_unlock_irq(q->queue_lock); + spin_unlock_irq(&elv_list_lock); len += sprintf(len+name, "\n"); return len; - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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