The patch titled
mempolicy: don't call mpol_set_nodemask() when no_context
has been added to the -mm tree. Its filename is
mempolicy-dont-call-mpol_set_nodemask-when-no_context.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: mempolicy: don't call mpol_set_nodemask() when no_context
From: Lee Schermerhorn <lee.schermerhorn@xxxxxx>
No need to call mpol_set_nodemask() when we have no context for the
mempolicy. This can occur when we're parsing a tmpfs 'mpol' mount option.
Just save the raw nodemask in the mempolicy's w.user_nodemask member for
use when a tmpfs/shmem file is created. mpol_shared_policy_init() will
"contextualize" the policy for the new file based on the creating task's
context.
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 | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff -puN mm/mempolicy.c~mempolicy-dont-call-mpol_set_nodemask-when-no_context mm/mempolicy.c
--- a/mm/mempolicy.c~mempolicy-dont-call-mpol_set_nodemask-when-no_context
+++ a/mm/mempolicy.c
@@ -2284,7 +2284,10 @@ int mpol_parse_str(char *str, struct mem
if (IS_ERR(new))
goto out;
- {
+ if (no_context) {
+ /* save for contextualization */
+ new->w.user_nodemask = nodes;
+ } else {
int ret;
NODEMASK_SCRATCH(scratch);
if (scratch) {
@@ -2300,10 +2303,6 @@ int mpol_parse_str(char *str, struct mem
}
}
err = 0;
- if (no_context) {
- /* save for contextualization */
- new->w.user_nodemask = nodes;
- }
out:
/* Restore string for error message */
_
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
mempolicy-dont-call-mpol_set_nodemask-when-no_context.patch
mempolicy-lose-unnecessary-loop-variable-in-mpol_parse_str.patch
mempolicy-rename-policy_types-and-cleanup-initialization.patch
mempolicy-factor-mpol_shared_policy_init-return-paths.patch
mempolicy-document-cpuset-interaction-with-tmpfs-mpol-mount-option.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
