Re: [patch v3 2/6] mm, compaction: return failed migration target pages back to freelist

2014-05-12 Thread Vlastimil Babka
On 05/07/2014 11:39 PM, Greg Thelen wrote: On Wed, May 07 2014, Andrew Morton wrote: On Tue, 6 May 2014 19:22:43 -0700 (PDT) David Rientjes wrote: Memory compaction works by having a "freeing scanner" scan from one end of a zone which isolates pages as migration targets while another "mig

Re: [patch v3 2/6] mm, compaction: return failed migration target pages back to freelist

2014-05-12 Thread Vlastimil Babka
On 05/07/2014 11:21 PM, David Rientjes wrote: On Wed, 7 May 2014, Andrew Morton wrote: Memory compaction works by having a "freeing scanner" scan from one end of a zone which isolates pages as migration targets while another "migrating scanner" scans from the other end of the same zone which is

Re: [patch v3 2/6] mm, compaction: return failed migration target pages back to freelist

2014-05-07 Thread Greg Thelen
On Wed, May 07 2014, Andrew Morton wrote: > On Tue, 6 May 2014 19:22:43 -0700 (PDT) David Rientjes > wrote: > >> Memory compaction works by having a "freeing scanner" scan from one end of a >> zone which isolates pages as migration targets while another "migrating >> scanner" >> scans from

Re: [patch v3 2/6] mm, compaction: return failed migration target pages back to freelist

2014-05-07 Thread David Rientjes
On Wed, 7 May 2014, Andrew Morton wrote: > > Memory compaction works by having a "freeing scanner" scan from one end of > > a > > zone which isolates pages as migration targets while another "migrating > > scanner" > > scans from the other end of the same zone which isolates pages for > > mig

Re: [patch v3 2/6] mm, compaction: return failed migration target pages back to freelist

2014-05-07 Thread Andrew Morton
On Tue, 6 May 2014 19:22:43 -0700 (PDT) David Rientjes wrote: > Memory compaction works by having a "freeing scanner" scan from one end of a > zone which isolates pages as migration targets while another "migrating > scanner" > scans from the other end of the same zone which isolates pages fo

[patch v3 2/6] mm, compaction: return failed migration target pages back to freelist

2014-05-06 Thread David Rientjes
Memory compaction works by having a "freeing scanner" scan from one end of a zone which isolates pages as migration targets while another "migrating scanner" scans from the other end of the same zone which isolates pages for migration. When page migration fails for an isolated page, the target