lkml.org 
[lkml]   [2009]   [Apr]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH v3 1/6] mm: Don't unmap gup()ed page
On Tue, Apr 14, 2009 at 10:39:54PM +0900, KOSAKI Motohiro wrote:
> I guess you dislike get_user_page_fast() grab pte_lock too, right?

If get_user_page_fast is vetoed to run a set_bit on the already cache
hot and exclusive struct page, I doubt taking a potentially cache
cold, mm-wide or pmd-wide pte_lock is ok.


\
 
 \ /
  Last update: 2009-04-14 16:17    [W:0.071 / U:6.832 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site