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authorBob Liu <lliubbo@gmail.com>2010-05-24 14:32:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 08:06:57 -0700
commit1980050250fa052b1c24a19f9b3d82fae14d77f8 (patch)
tree96743238e6941bd7af113ebe9275f6892b374dd3 /mm/mempolicy.c
parent6eb27e1fdf5781719a3d2e90e6c89fa012135c62 (diff)
downloadvexpress-lsk-1980050250fa052b1c24a19f9b3d82fae14d77f8.tar.gz
mempolicy: remove redundant check
Lee's patch "mempolicy: use MPOL_PREFERRED for system-wide default policy" has made the MPOL_DEFAULT only used in the memory policy APIs. So, no need to check in __mpol_equal also. Also get rid of mpol_match_intent() and move its logic directly into __mpol_equal(). Signed-off-by: Bob Liu <lliubbo@gmail.com> Acked-by: David Rientjes <rientjes@google.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Lee Schermerhorn <lee.schermerhorn@hp.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.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index d97355b744a..ac5aeafaec9 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -1787,16 +1787,6 @@ struct mempolicy *__mpol_cond_copy(struct mempolicy *tompol,
return tompol;
}
-static int mpol_match_intent(const struct mempolicy *a,
- const struct mempolicy *b)
-{
- if (a->flags != b->flags)
- return 0;
- if (!mpol_store_user_nodemask(a))
- return 1;
- return nodes_equal(a->w.user_nodemask, b->w.user_nodemask);
-}
-
/* Slow path of a mempolicy comparison */
int __mpol_equal(struct mempolicy *a, struct mempolicy *b)
{
@@ -1804,8 +1794,12 @@ int __mpol_equal(struct mempolicy *a, struct mempolicy *b)
return 0;
if (a->mode != b->mode)
return 0;
- if (a->mode != MPOL_DEFAULT && !mpol_match_intent(a, b))
+ if (a->flags != b->flags)
return 0;
+ if (mpol_store_user_nodemask(a))
+ if (!nodes_equal(a->w.user_nodemask, b->w.user_nodemask))
+ return 0;
+
switch (a->mode) {
case MPOL_BIND:
/* Fall through */