From: akpm@linux-foundation.org
To: mm-commits@vger.kernel.org, stable@vger.kernel.org,
richardw.yang@linux.intel.com, mhocko@suse.com,
yang.shi@linux.alibaba.com
Subject: + mm-move_pages-fix-the-return-value-if-there-are-not-migrated-pages.patch added to -mm tree
Date: Sat, 18 Jan 2020 14:47:54 -0800 [thread overview]
Message-ID: <20200118224754.ufg_j%akpm@linux-foundation.org> (raw)
The patch titled
Subject: mm/migrate.c: move_pages: fix the return value if there are not-migrated pages
has been added to the -mm tree. Its filename is
mm-move_pages-fix-the-return-value-if-there-are-not-migrated-pages.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-move_pages-fix-the-return-value-if-there-are-not-migrated-pages.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-move_pages-fix-the-return-value-if-there-are-not-migrated-pages.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/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Yang Shi <yang.shi@linux.alibaba.com>
Subject: mm/migrate.c: move_pages: fix the return value if there are not-migrated pages
do_move_pages_to_node() might return > 0 value, the number of pages that
are not migrated, then the value will be returned to userspace directly.
But, move_pages() syscall would just return 0 or errno. So, we need reset
the return value to 0 for such case as pre-v4.17 did.
Link: http://lkml.kernel.org/r/1579325203-16405-1-git-send-email-yang.shi@linux.alibaba.com
Fixes: a49bd4d71637 ("mm, numa: rework do_pages_move")
Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Wei Yang <richardw.yang@linux.intel.com>
Cc: <stable@vger.kernel.org> [4.17+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
mm/migrate.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/mm/migrate.c~mm-move_pages-fix-the-return-value-if-there-are-not-migrated-pages
+++ a/mm/migrate.c
@@ -1659,8 +1659,11 @@ static int do_pages_move(struct mm_struc
goto out_flush;
err = do_move_pages_to_node(mm, &pagelist, current_node);
- if (err)
+ if (err) {
+ if (err > 0)
+ err = 0;
goto out;
+ }
if (i > start) {
err = store_status(status, start, current_node, i - start);
if (err)
_
Patches currently in -mm which might be from yang.shi@linux.alibaba.com are
mm-move_pages-fix-the-return-value-if-there-are-not-migrated-pages.patch
reply other threads:[~2020-01-18 22:47 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200118224754.ufg_j%akpm@linux-foundation.org \
--to=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mhocko@suse.com \
--cc=mm-commits@vger.kernel.org \
--cc=richardw.yang@linux.intel.com \
--cc=stable@vger.kernel.org \
--cc=yang.shi@linux.alibaba.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).