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@xxxxxxxxxxxxxxxxxxx> 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 @@ -584,6 +584,9 @@ 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. _ -- 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