The patch titled
Subject: mm/memblock.c:memblock_add_range(): if nr_new is 0 just return
has been added to the -mm tree. Its filename is
mm-memblock-if-nr_new-is-0-just-return.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-memblock-if-nr_new-is-0-just-return.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-memblock-if-nr_new-is-0-just-return.patch
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------------------------------------------------------
From: nimisolo <nimisolo@xxxxxxxxx>
Subject: mm/memblock.c:memblock_add_range(): if nr_new is 0 just return
If nr_new is 0 which means there's no region would be added, so just
return to the caller.
Signed-off-by: nimisolo <nimisolo@xxxxxxxxx>
Cc: Alexander Kuleshov <kuleshovmail@xxxxxxxxx>
Cc: Pekka Enberg <penberg@xxxxxxxxxx>
Cc: Tony Luck <tony.luck@xxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Tang Chen <tangchen@xxxxxxxxxxxxxx>
Cc: Wei Yang <weiyang@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memblock.c | 3 +++
1 file changed, 3 insertions(+)
diff -puN mm/memblock.c~mm-memblock-if-nr_new-is-0-just-return mm/memblock.c
--- a/mm/memblock.c~mm-memblock-if-nr_new-is-0-just-return
+++ a/mm/memblock.c
@@ -585,6 +585,9 @@ repeat:
nid, flags);
}
+ if (!nr_new)
+ return 0;
+
/*
* If this was the first round, resize array and repeat for actual
* insertions; otherwise, merge and return.
_
Patches currently in -mm which might be from nimisolo@xxxxxxxxx are
mm-memblock-if-nr_new-is-0-just-return.patch
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