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author | Vegard Nossum <vegard.nossum@oracle.com> | 2017-02-27 23:30:07 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-28 03:43:48 +0100 |
commit | f1f1007644ffc8051a4c11427d58b1967ae7b75a (patch) | |
tree | e7e590cb1baa494b963d81b967a3f98d3c56f33e /arch/sh/kernel/smp.c | |
parent | checkpatch: warn when formats use %Z and suggest %z (diff) | |
download | linux-f1f1007644ffc8051a4c11427d58b1967ae7b75a.tar.xz linux-f1f1007644ffc8051a4c11427d58b1967ae7b75a.zip |
mm: add new mmgrab() helper
Apart from adding the helper function itself, the rest of the kernel is
converted mechanically using:
git grep -l 'atomic_inc.*mm_count' | xargs sed -i 's/atomic_inc(&\(.*\)->mm_count);/mmgrab\(\1\);/'
git grep -l 'atomic_inc.*mm_count' | xargs sed -i 's/atomic_inc(&\(.*\)\.mm_count);/mmgrab\(\&\1\);/'
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/20161218123229.22952-1-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/sh/kernel/smp.c')
-rw-r--r-- | arch/sh/kernel/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/kernel/smp.c b/arch/sh/kernel/smp.c index 38e7860845db..ee379c699c08 100644 --- a/arch/sh/kernel/smp.c +++ b/arch/sh/kernel/smp.c @@ -178,7 +178,7 @@ asmlinkage void start_secondary(void) struct mm_struct *mm = &init_mm; enable_mmu(); - atomic_inc(&mm->mm_count); + mmgrab(mm); atomic_inc(&mm->mm_users); current->active_mm = mm; #ifdef CONFIG_MMU |