summaryrefslogtreecommitdiffstats
path: root/arch/metag
diff options
context:
space:
mode:
authorVegard Nossum <vegard.nossum@oracle.com>2017-02-27 14:30:10 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-27 18:43:48 -0800
commit3fce371bfac2be0396ffc1e763600e6c6b1bb52a (patch)
treeda45267ba334ada341aa13d600848299564751ce /arch/metag
parentf1f1007644ffc8051a4c11427d58b1967ae7b75a (diff)
downloadlinux-stable-3fce371bfac2be0396ffc1e763600e6c6b1bb52a.tar.gz
linux-stable-3fce371bfac2be0396ffc1e763600e6c6b1bb52a.tar.bz2
linux-stable-3fce371bfac2be0396ffc1e763600e6c6b1bb52a.zip
mm: add new mmget() helper
Apart from adding the helper function itself, the rest of the kernel is converted mechanically using: git grep -l 'atomic_inc.*mm_users' | xargs sed -i 's/atomic_inc(&\(.*\)->mm_users);/mmget\(\1\);/' git grep -l 'atomic_inc.*mm_users' | xargs sed -i 's/atomic_inc(&\(.*\)\.mm_users);/mmget\(\&\1\);/' This is needed for a later patch that hooks into the helper, but might be a worthwhile cleanup on its own. (Michal Hocko provided most of the kerneldoc comment.) Link: http://lkml.kernel.org/r/20161218123229.22952-2-vegard.nossum@oracle.com Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/metag')
-rw-r--r--arch/metag/kernel/smp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/metag/kernel/smp.c b/arch/metag/kernel/smp.c
index af9cff547a19..c622293254e4 100644
--- a/arch/metag/kernel/smp.c
+++ b/arch/metag/kernel/smp.c
@@ -344,7 +344,7 @@ asmlinkage void secondary_start_kernel(void)
* All kernel threads share the same mm context; grab a
* reference and switch to it.
*/
- atomic_inc(&mm->mm_users);
+ mmget(mm);
mmgrab(mm);
current->active_mm = mm;
cpumask_set_cpu(cpu, mm_cpumask(mm));