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authorVegard Nossum <vegard.nossum@oracle.com>2017-02-27 14:30:07 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-27 18:43:48 -0800
commitf1f1007644ffc8051a4c11427d58b1967ae7b75a (patch)
treee7e590cb1baa494b963d81b967a3f98d3c56f33e /arch/ia64/kernel/setup.c
parentcheckpatch: warn when formats use %Z and suggest %z (diff)
downloadlinux-dev-f1f1007644ffc8051a4c11427d58b1967ae7b75a.tar.xz
linux-dev-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/ia64/kernel/setup.c')
-rw-r--r--arch/ia64/kernel/setup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index c483ece3eb84..d68322966f33 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -994,7 +994,7 @@ cpu_init (void)
*/
ia64_setreg(_IA64_REG_CR_DCR, ( IA64_DCR_DP | IA64_DCR_DK | IA64_DCR_DX | IA64_DCR_DR
| IA64_DCR_DA | IA64_DCR_DD | IA64_DCR_LC));
- atomic_inc(&init_mm.mm_count);
+ mmgrab(&init_mm);
current->active_mm = &init_mm;
BUG_ON(current->mm);