Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

et>, Chris Zankel , Michal Simek , Thomas Bogendoerfer , linux-par...@vger.kernel.org, Max Filippov , linux-ker...@vger.kernel.org, Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Guo Ren , Borislav Petkov , Johannes Berg , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To:

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

e.net>, Chris Zankel , Michal Simek , Thomas Bogendoerfer , linux-par...@vger.kernel.org, Max Filippov , linux-ker...@vger.kernel.org, Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Guo Ren , Borislav Petkov , Johannes Berg , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To:

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

e.net>, Chris Zankel , Michal Simek , Thomas Bogendoerfer , linux-par...@vger.kernel.org, Max Filippov , linux-ker...@vger.kernel.org, Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Guo Ren , Borislav Petkov , Johannes Berg , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To:

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

et>, Chris Zankel , Michal Simek , Thomas Bogendoerfer , linux-par...@vger.kernel.org, Max Filippov , linux-ker...@vger.kernel.org, Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Guo Ren , Borislav Petkov , Johannes Berg , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To:

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

k.msu.ru>, Al Viro , Andy Lutomirski , Paul Walmsley , Thomas Gleixner , "open list:ALPHA PORT" , Andrew Morton , Vlastimil Babka , Richard Henderson , Chris Zankel , Michal Simek , Thomas Bogendoerfer , "open list:PARISC ARCHITECTURE" , LKML , Dinh Nguyen , Palmer Dabbelt , Sven Schnelle

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

e.com>, Thomas Gleixner , linux-al...@vger.kernel.org, Andrew Morton , Vlastimil Babka , Richard Henderson , Chris Zankel , Michal Simek , Thomas Bogendoerfer , Parisc List , Max Filippov , Linux Kernel Mailing List , Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Borislav Petkov , Johannes

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

nkel , Michal Simek , Thomas Bogendoerfer , linux-par...@vger.kernel.org, linux-m...@vger.kernel.org, Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Guo Ren , Borislav Petkov , Johannes Berg , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To:

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

Michal Simek , Thomas Bogendoerfer , linux-par...@vger.kernel.org, Max Filippov , linux-ker...@vger.kernel.org, Dinh Nguyen , Palmer Dabbelt , Sven Schnelle , Guo Ren , Borislav Petkov , Johannes Berg , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To:

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

On Tue, May 24, 2022 at 07:45:31PM -0400, Peter Xu wrote: > I observed that for each of the shared file-backed page faults, we're very > likely to retry one more time for the 1st write fault upon no page. It's > because we'll need to release the mmap lock for dirty rate limit purpose > with

Re: [PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

On Wed, May 25, 2022 at 1:45 AM Peter Xu wrote: > I observed that for each of the shared file-backed page faults, we're very > likely to retry one more time for the 1st write fault upon no page. It's > because we'll need to release the mmap lock for dirty rate limit purpose > with

[PATCH v3] mm: Avoid unnecessary page fault retires on shared memory types

I observed that for each of the shared file-backed page faults, we're very likely to retry one more time for the 1st write fault upon no page. It's because we'll need to release the mmap lock for dirty rate limit purpose with balance_dirty_pages_ratelimited() (in fault_dirty_shared_page()). Then