]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm/z3fold.c: limit first_num to the actual range of possible buddy indexes
authorzhong jiang <zhongjiang@huawei.com>
Wed, 22 Feb 2017 23:46:51 +0000 (15:46 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 23 Feb 2017 00:41:31 +0000 (16:41 -0800)
commitf201ebd87652cf1519792f8662bb3f862c76aa33
tree3dfc4774407bcc51d5cb91066af04cdc7eb8d3b8
parent083fb8edda0487d192e8c117f625563b920cf7a4
mm/z3fold.c: limit first_num to the actual range of possible buddy indexes

At present, Tying the first_num size to NCHUNKS_ORDER is confusing.  the
number of chunks is completely unrelated to the number of buddies.

The patch limits the first_num to actual range of possible buddy indexes.
and that is more reasonable and obvious without functional change.

Link: http://lkml.kernel.org/r/1476776569-29504-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Suggested-by: Dan Streetman <ddstreet@ieee.org>
Acked-by: Dan Streetman <ddstreet@ieee.org>
Acked-by: Vitaly Wool <vitalywool@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/z3fold.c