Messages in this thread | | | Date | Wed, 20 Jun 2012 10:51:54 +0800 | From | Xiao Guangrong <> | Subject | Re: [PATCH 01/10] zcache: fix preemptable memory allocation in atomic context |
| |
On 06/19/2012 10:26 PM, Seth Jennings wrote:
> Did you get a might_sleep warning on this? I haven't seen this being an > issue. >
No, i did not, i get it just from code review.
> GFP_ATOMIC only modifies the existing mask to allow allocation use the > emergency pool. It is __GFP_WAIT not being set that prevents sleep. We > don't want to use the emergency pool since we make large, long lived > allocations with this mask. >
Ah, yes, i thought only GFP_ATOMIC can prevent sleep, thank you very much for pointing it out.
| |