Messages in this thread Patch in this message | | | Date | Fri, 14 Dec 2001 14:49:54 +0100 (CET) | From | Ingo Molnar <> | Subject | [patch] mempool-2.5.1-D0 |
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the attached patch against -pre11 fixes a possible deadlock pointed out by Arjan: gfp_nowait needs to exclude __GFP_IO as well, to avoid some of the deeper deadlocks where the first ->alloc() would generate IO.
Ingo
--- linux/mm/mempool.c.orig Fri Dec 14 12:34:08 2001 +++ linux/mm/mempool.c Fri Dec 14 12:35:53 2001 @@ -185,7 +185,7 @@ struct list_head *tmp; int curr_nr; DECLARE_WAITQUEUE(wait, current); - int gfp_nowait = gfp_mask & ~__GFP_WAIT; + int gfp_nowait = gfp_mask & ~(__GFP_WAIT | __GFP_IO);
repeat_alloc: element = pool->alloc(gfp_nowait, pool->pool_data);
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