Re: [PATCH v4] mm: pmd dirty emulation in page fault handler

2016-12-27 Thread Michal Hocko
On Sat 24-12-16 00:14:58, Minchan Kim wrote: > Andreas reported [1] made a test in jemalloc hang in THP mode in arm64. > http://lkml.kernel.org/r/mvmmvfy37g1@hawking.suse.de > > The problem is currently page fault handler doesn't supports dirty bit > emulation of pmd for non-HW dirty-bit archi

[PATCH v4] mm: pmd dirty emulation in page fault handler

2016-12-23 Thread Minchan Kim
Andreas reported [1] made a test in jemalloc hang in THP mode in arm64. http://lkml.kernel.org/r/mvmmvfy37g1@hawking.suse.de The problem is currently page fault handler doesn't supports dirty bit emulation of pmd for non-HW dirty-bit architecture so that application stucks until VM marked the