Subject: + mm-migrate-add-comment-about-permanent-failure-path.patch added to -mm tree
To: n-horiguchi@xxxxxxxxxxxxx,aquini@xxxxxxxxxx,cl@xxxxxxxxx,iamjoonsoo.kim@xxxxxxx,liwanp@xxxxxxxxxxxxxxxxxx,mgorman@xxxxxxx,riel@xxxxxxxxxx,vbabka@xxxxxxx,zhangyanfei@xxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 16 Dec 2013 11:55:53 -0800
The patch titled
Subject: mm/migrate: add comment about permanent failure path
has been added to the -mm tree. Its filename is
mm-migrate-add-comment-about-permanent-failure-path.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-migrate-add-comment-about-permanent-failure-path.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-migrate-add-comment-about-permanent-failure-path.patch
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------------------------------------------------------
From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Subject: mm/migrate: add comment about permanent failure path
Let's add a comment about where the failed page goes to, which makes code
more readable.
Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Acked-by: Christoph Lameter <cl@xxxxxxxxx>
Reviewed-by: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Cc: Rafael Aquini <aquini@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/migrate.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff -puN mm/migrate.c~mm-migrate-add-comment-about-permanent-failure-path mm/migrate.c
--- a/mm/migrate.c~mm-migrate-add-comment-about-permanent-failure-path
+++ a/mm/migrate.c
@@ -1124,7 +1124,12 @@ int migrate_pages(struct list_head *from
nr_succeeded++;
break;
default:
- /* Permanent failure */
+ /*
+ * Permanent failure (-EBUSY, -ENOSYS, etc.):
+ * unlike -EAGAIN case, the failed page is
+ * removed from migration page list and not
+ * retried in the next outer loop.
+ */
nr_failed++;
break;
}
_
Patches currently in -mm which might be from n-horiguchi@xxxxxxxxxxxxx are
include-linux-hugetlbh-make-isolate_huge_page-an-inline.patch
thp-move-preallocated-pte-page-table-on-move_huge_pmd.patch
mm-mempolicy-correct-putback-method-for-isolate-pages-if-failed.patch
mm-compaction-respect-ignore_skip_hint-in-update_pageblock_skip.patch
mm-memory-failurec-recheck-pagehuge-after-hugetlb-page-migrate-successfully.patch
mm-hugetlbfs-add-some-vm_bug_ons-to-catch-non-hugetlbfs-pages.patch
mm-rmap-recompute-pgoff-for-huge-page.patch
mm-rmap-factor-nonlinear-handling-out-of-try_to_unmap_file.patch
mm-rmap-factor-lock-function-out-of-rmap_walk_anon.patch
mm-rmap-make-rmap_walk-to-get-the-rmap_walk_control-argument.patch
mm-rmap-extend-rmap_walk_xxx-to-cope-with-different-cases.patch
mm-rmap-use-rmap_walk-in-try_to_unmap.patch
mm-rmap-use-rmap_walk-in-try_to_munlock.patch
mm-rmap-use-rmap_walk-in-page_referenced.patch
mm-rmap-use-rmap_walk-in-page_mkclean.patch
mm-hwpoison-add-to-hwpoison_inject.patch
lib-show_memc-show-num_poisoned_pages-when-oom.patch
mm-migrate-add-comment-about-permanent-failure-path.patch
mm-migrate-correct-failure-handling-if-hugepage_migration_support.patch
mm-migrate-remove-putback_lru_pages-fix-comment-on-putback_movable_pages.patch
mm-migrate-remove-unused-function-fail_migrate_page.patch
linux-next.patch
mm-migratec-fix-set-cpupid-on-page-migration-twice-against-thp.patch
mm-migratec-fix-setting-of-cpupid-on-page-migration-twice-against-normal-page.patch
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