[lkml]   [2009]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH -mm] vmscan: make mapped executable pages the first class citizen
On Thu, 7 May 2009, Lee Schermerhorn wrote:

> > Another possibility may be to put the exec pages on the mlock list
> > and scan the list if under extreme duress?
> Actually, you don't need to go thru the overhead of mucking with the
> PG_mlocked flag which incurs the rmap walk on unlock, etc. If one sets
> the the AS_UNEVICTABLE flag, the pages will be shuffled off the the
> unevictable LRU iff we ever try to reclaim them. And, we do have the
> function to scan the unevictable lru to "rescue" pages in a given
> mapping should we want to bring them back under extreme load. We'd need
> to remove the AS_UNEVICTABLE flag, first. This is how

We need some way to control this. If there would be a way to simply switch
off eviction of exec pages (via /proc/sys/vm/never_reclaim_exec_pages or
so) I'd use it.

 \ /
  Last update: 2009-05-07 18:45    [W:0.336 / U:1.828 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site