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| author | Ingo Molnar <mingo@kernel.org> | 2013-12-17 15:27:08 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-12-17 15:27:08 +0100 |
| commit | bb799d3b980eb803ca2da4a4eefbd9308f8d988a (patch) | |
| tree | 69fbe0cd6d47b23a50f5e1d87bf7489532fae149 /kernel/cpuset.c | |
| parent | powerpc: Full barrier for smp_mb__after_unlock_lock() (diff) | |
| parent | Linux 3.13-rc4 (diff) | |
| download | linux-bb799d3b980eb803ca2da4a4eefbd9308f8d988a.tar.gz linux-bb799d3b980eb803ca2da4a4eefbd9308f8d988a.zip | |
Merge tag 'v3.13-rc4' into core/locking
Merge Linux 3.13-rc4, to refresh this rather old tree with the latest fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/cpuset.c')
| -rw-r--r-- | kernel/cpuset.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 6bf981e13c43..4772034b4b17 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -1033,8 +1033,10 @@ static void cpuset_change_task_nodemask(struct task_struct *tsk, need_loop = task_has_mempolicy(tsk) || !nodes_intersects(*newmems, tsk->mems_allowed); - if (need_loop) + if (need_loop) { + local_irq_disable(); write_seqcount_begin(&tsk->mems_allowed_seq); + } nodes_or(tsk->mems_allowed, tsk->mems_allowed, *newmems); mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP1); @@ -1042,8 +1044,10 @@ static void cpuset_change_task_nodemask(struct task_struct *tsk, mpol_rebind_task(tsk, newmems, MPOL_REBIND_STEP2); tsk->mems_allowed = *newmems; - if (need_loop) + if (need_loop) { write_seqcount_end(&tsk->mems_allowed_seq); + local_irq_enable(); + } task_unlock(tsk); } |