From: Bob Liu <lliubbo@xxxxxxxxx>
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@xxxxxxxxx>
---
mm/mempolicy.c | 16 +++++-----------
1 files changed, 5 insertions(+), 11 deletions(-)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index b88e914..cca9405 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 */
--
1.5.6.3
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