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| author | Oleg Nesterov <oleg@redhat.com> | 2013-09-11 14:20:14 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:57:00 -0700 |
| commit | ef0855d334e1e4af7c3e0c42146a8479ea14a5ab (patch) | |
| tree | 5955b0424bb392e1949acc0ad5066cb461bef867 /mm/mempolicy.c | |
| parent | c07303c0af38ffb1e5fd9b5ff37d0798298a7acf (diff) | |
| download | op-kernel-dev-ef0855d334e1e4af7c3e0c42146a8479ea14a5ab.zip op-kernel-dev-ef0855d334e1e4af7c3e0c42146a8479ea14a5ab.tar.gz | |
mm: mempolicy: turn vma_set_policy() into vma_dup_policy()
Simple cleanup. Every user of vma_set_policy() does the same work, this
looks a bit annoying imho. And the new trivial helper which does
mpol_dup() + vma_set_policy() to simplify the callers.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: 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 'mm/mempolicy.c')
| -rw-r--r-- | mm/mempolicy.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 4baf12e..6b1d426 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -2065,6 +2065,16 @@ retry_cpuset: } EXPORT_SYMBOL(alloc_pages_current); +int vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst) +{ + struct mempolicy *pol = mpol_dup(vma_policy(src)); + + if (IS_ERR(pol)) + return PTR_ERR(pol); + dst->vm_policy = pol; + return 0; +} + /* * If mpol_dup() sees current->cpuset == cpuset_being_rebound, then it * rebinds the mempolicy its copying by calling mpol_rebind_policy() |
