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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@gmail.com>
Cc: Alexander Kuleshov <kuleshovmail@gmail.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Tang Chen <tangchen@cn.fujitsu.com>
Cc: Wei Yang <weiyang@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
nimisolo 2016-07-26 15:24:56 -07:00 committed by Linus Torvalds
parent 8a5c743e30
commit ef3cc4db41
1 changed files with 3 additions and 0 deletions
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3
mm/memblock.c
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@ -584,6 +584,9 @@ int __init_memblock memblock_add_range(struct memblock_type *type,
nid, flags);
}
if (!nr_new)
return 0;
/*
* If this was the first round, resize array and repeat for actual
* insertions; otherwise, merge and return.