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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-09-28 01:45:33 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-09-28 01:45:33 +0200 |
| commit | 6111da3432b10b2c56a21a5d8671aee46435326d (patch) | |
| tree | dc85fcc0b58ab24754367794c5b617117afce734 /Documentation/dmaengine.txt | |
| parent | Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/... (diff) | |
| parent | cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags (diff) | |
| download | linux-6111da3432b10b2c56a21a5d8671aee46435326d.tar.xz linux-6111da3432b10b2c56a21a5d8671aee46435326d.zip | |
Merge branch 'for-3.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
"This is quite late but these need to be backported anyway.
This is the fix for a long-standing cpuset bug which existed from
2009. cpuset makes use of PF_SPREAD_{PAGE|SLAB} flags to modify the
task's memory allocation behavior according to the settings of the
cpuset it belongs to; unfortunately, when those flags have to be
changed, cpuset did so directly even whlie the target task is running,
which is obviously racy as task->flags may be modified by the task
itself at any time. This obscure bug manifested as corrupt
PF_USED_MATH flag leading to a weird crash.
The bug is fixed by moving the flag to task->atomic_flags. The first
two are prepatory ones to help defining atomic_flags accessors and the
third one is the actual fix"
* 'for-3.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cpuset: PF_SPREAD_PAGE and PF_SPREAD_SLAB should be atomic flags
sched: add macros to define bitops for task atomic flags
sched: fix confusing PFA_NO_NEW_PRIVS constant
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions