mm/dmapool.c: use TASK_UNINTERRUPTIBLE in dma_pool_alloc()

684265d4 · Andrew Morton <[email protected]> · 2011-01-13 15:47:25 -08:00

As it stands this code will degenerate into a busy-wait if the calling task
has signal_pending().

Cc: Rolf Eike Beer <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 684265d4a30f133162f06ddb2e5010608e60e4bb
Parents: 84bc227d

Changes

1 files changed · +1 −1

File	Status	Add	Del	Content
mm/dmapool.c	modified	+1	−1	View file

mm/dmapool.c

View file

diff --git a/mm/dmapool.c b/mm/dmapool.c
index a2f6295..03bf3bb 100644
--- a/mm/dmapool.c
+++ b/mm/dmapool.c
@@ -324,7 +324,7 @@ void *dma_pool_alloc(struct dma_pool *pool, gfp_t mem_flags,
 		if (mem_flags & __GFP_WAIT) {
 			DECLARE_WAITQUEUE(wait, current);
 
-			__set_current_state(TASK_INTERRUPTIBLE);
+			__set_current_state(TASK_UNINTERRUPTIBLE);
 			__add_wait_queue(&pool->waitq, &wait);
 			spin_unlock_irqrestore(&pool->lock, flags);
 