The patch titled
mempolicy: fix get_mempolicy() for relative and static nodes
has been added to the -mm tree. Its filename is
mempolicy-fix-get_mempolicy-for-relative-and-static-nodes.patch
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------------------------------------------------------
Subject: mempolicy: fix get_mempolicy() for relative and static nodes
From: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
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@xxxxxx>
Cc: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
Cc: Ravikiran Thirumalai <kiran@xxxxxxxxxxxx>
Cc: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempolicy.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff -puN mm/mempolicy.c~mempolicy-fix-get_mempolicy-for-relative-and-static-nodes mm/mempolicy.c
--- a/mm/mempolicy.c~mempolicy-fix-get_mempolicy-for-relative-and-static-nodes
+++ a/mm/mempolicy.c
@@ -806,9 +806,13 @@ static long do_get_mempolicy(int *policy
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:
_
Patches currently in -mm which might be from lee.schermerhorn@xxxxxx are
tmpfs-fix-oops-on-mounts-with-mpol=default.patch
tmpfs-mpol=bind-0-dont-cause-mount-error.patch
tmpfs-handle-mpol_local-mount-option-properly.patch
tmpfs-cleanup-mpol_parse_str.patch
doc-add-the-documentation-for-mpol=local.patch
mempolicy-fix-get_mempolicy-for-relative-and-static-nodes.patch
mempolicy-remove-case-mpol_interleave-from-policy_zonelist.patch
mempolicy-remove-redundant-check.patch
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