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Commit 684265d4a30f133162f06ddb2e5010608e60e4bb

Authored by Andrew Morton
Committed by Linus Torvalds
1 parent 84bc227d7f
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

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

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

Cc: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Showing 1 changed file with 1 additions and 1 deletions Side-by-side Diff

... ... @@ -324,7 +324,7 @@
324 324 if (mem_flags & __GFP_WAIT) {
325 325 DECLARE_WAITQUEUE(wait, current);
326 326  
327   - __set_current_state(TASK_INTERRUPTIBLE);
  327 + __set_current_state(TASK_UNINTERRUPTIBLE);
328 328 __add_wait_queue(&pool->waitq, &wait);
329 329 spin_unlock_irqrestore(&pool->lock, flags);
330 330