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nbd: fix sparse warning

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I just fixed this in "drivers/block/rbd.c" and I noticed that
"drivers/block/nbd.c" has the same problem.  Fix a warning issued by
sparse by adding some lockdep annotations to indicate the queue lock gets
dropped (because it's held when do_nbd_request() is called) and
re-acquired within the function.

Signed-off-by: Alex Elder <elder@inktank.com>
Cc: Paul Clements <paul.clements@steeleye.com>
Cc: Paul Clements <paul.clements@us.sios.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alex Elder 2013-02-27 17:05:28 -08:00 committed by Linus Torvalds
parent 5e4b269bcd
commit 398eb08555
1 changed files with 1 additions and 0 deletions
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drivers/block/nbd.c
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@ -564,6 +564,7 @@ static int nbd_thread(void *data)
*/
static void do_nbd_request(struct request_queue *q)
__releases(q->queue_lock) __acquires(q->queue_lock)
{
struct request *req;