lkml.org 
[lkml]   [2016]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] GFP_NOFAIL cleanups
Date
Hi,
I have posted this as an RFC previously [1] as there was no fundamental
disagreement I would like to ask for inclusion.

Tetsuo has noticed [2] that recent changes have changed GFP_NOFAIL
semantic for costly order requests. I believe that the primary reason
why this happened is that our GFP_NOFAIL checks are too scattered
and it is really easy to forget about adding one. That's why I am
proposing patch 1 which consolidates all the nofail handling at a single
place. This should help to make this code better maintainable.

Patch 2 on top is a further attempt to make GFP_NOFAIL semantic less
surprising. As things stand currently GFP_NOFAIL overrides the oom killer
prevention code which is both subtle and not really needed. The patch 2
has more details about issues this might cause.

I would consider both patches more a cleanup than anything else. Any
feedback is highly appreciated.

[1] http://lkml.kernel.org/r/20161123064925.9716-1-mhocko@kernel.org
[2] http://lkml.kernel.org/r/1479387004-5998-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp

\
 
 \ /
  Last update: 2016-12-01 16:25    [W:0.130 / U:0.652 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site