diff options
| author | Zhihui Zhang <zzhsuny@gmail.com> | 2014-12-18 16:17:09 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-12-18 19:08:10 -0800 |
| commit | 859f7ef142a956676cb387b90f18e2e71e959c68 (patch) | |
| tree | 3ab6951a0023b6dafa27be536cb181fcabd89c1e /mm | |
| parent | 44e8967d591686463e84a88b46b03beba3ab49fb (diff) | |
| download | linux-859f7ef142a956676cb387b90f18e2e71e959c68.tar.gz linux-859f7ef142a956676cb387b90f18e2e71e959c68.tar.bz2 linux-859f7ef142a956676cb387b90f18e2e71e959c68.zip | |
mm/mempolicy.c: remove unnecessary is_valid_nodemask()
When nodes is true, nsc->mask2 has already been filtered by nsc->mask1,
which has already factored in node_states[N_MEMORY].
Signed-off-by: Zhihui Zhang <zzhsuny@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/mempolicy.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c index e58725aff7e9..f22c55947181 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -162,12 +162,6 @@ static const struct mempolicy_operations { enum mpol_rebind_step step); } mpol_ops[MPOL_MAX]; -/* Check that the nodemask contains at least one populated zone */ -static int is_valid_nodemask(const nodemask_t *nodemask) -{ - return nodes_intersects(*nodemask, node_states[N_MEMORY]); -} - static inline int mpol_store_user_nodemask(const struct mempolicy *pol) { return pol->flags & MPOL_MODE_FLAGS; @@ -202,7 +196,7 @@ static int mpol_new_preferred(struct mempolicy *pol, const nodemask_t *nodes) static int mpol_new_bind(struct mempolicy *pol, const nodemask_t *nodes) { - if (!is_valid_nodemask(nodes)) + if (nodes_empty(*nodes)) return -EINVAL; pol->v.nodes = *nodes; return 0; @@ -234,7 +228,7 @@ static int mpol_set_nodemask(struct mempolicy *pol, nodes = NULL; /* explicit local allocation */ else { if (pol->flags & MPOL_F_RELATIVE_NODES) - mpol_relative_nodemask(&nsc->mask2, nodes,&nsc->mask1); + mpol_relative_nodemask(&nsc->mask2, nodes, &nsc->mask1); else nodes_and(nsc->mask2, *nodes, nsc->mask1); |