Messages in this thread | | | Date | Mon, 12 May 2014 11:07:12 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: [PATCH 1/3] mm: add comment for __mod_zone_page_stat |
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On Mon, 12 May 2014, Jianyu Zhan wrote:
> This means they guarantee that even they are preemted the vm > counter won't be modified incorrectly. Because the counter is page-related > (e.g., a new anon page added), and they are exclusively hold the pte lock.
Ok. if these locations hold the pte lock then preemption is disabled and you are ok to use __mod_zone_page_state. Has nothing to do with the page.
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