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authorLee Schermerhorn <lee.schermerhorn@hp.com>2010-03-23 13:35:41 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-24 16:31:22 -0700
commitc6b6ef8bb05af632889c5536513b9f4004961f73 (patch)
tree85f90f246fa1da0d47c48c43a735bbfac33c542e /mm/mempolicy.c
parent7198f3c9b13c7aa1e5d9f7ff74c0ea303174feff (diff)
downloadvexpress-lsk-c6b6ef8bb05af632889c5536513b9f4004961f73.tar.gz
mempolicy: fix get_mempolicy() for relative and static nodes
Discovered while testing other mempolicy changes: get_mempolicy() does not handle static/relative mode flags correctly. Return the value that the user specified so that it can be restored via set_mempolicy() if desired. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: Ravikiran Thirumalai <kiran@scalex86.org> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Christoph Lameter <cl@linux-foundation.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.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 6cdfa1df57f..8034abd3a13 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -806,9 +806,13 @@ static long do_get_mempolicy(int *policy, nodemask_t *nmask,
err = 0;
if (nmask) {
- task_lock(current);
- get_policy_nodemask(pol, nmask);
- task_unlock(current);
+ if (mpol_store_user_nodemask(pol)) {
+ *nmask = pol->w.user_nodemask;
+ } else {
+ task_lock(current);
+ get_policy_nodemask(pol, nmask);
+ task_unlock(current);
+ }
}
out: