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UPSTREAM: mm/zsmalloc.c: fix comment for get_pages_per_zspage

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(cherry-pick from commit 888fa374e625f3ee8f3cc2efebf52939d3bb6da1)

Bug: 25951511

Change-Id: I94fc95aff6dcab3999c3dcb275ca65b8cd4b3565
Signed-off-by: Yinghao Xie <yinghao.xie@sumsung.com>
Suggested-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yinghao Xie 2015-04-15 16:15:49 -07:00 committed by Srinivasarao P
parent 588deb99ca
commit f3ff102b86
1 changed files with 2 additions and 1 deletions
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mm/zsmalloc.c
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@ -732,7 +732,8 @@ out:
* to form a zspage for each size class. This is important
* to reduce wastage due to unusable space left at end of
* each zspage which is given as:
* wastage = Zp - Zp % size_class
* wastage = Zp % class_size
* usage = Zp - wastage
* where Zp = zspage size = k * PAGE_SIZE where k = 1, 2, ...
*
* For example, for size class of 3/8 * PAGE_SIZE, we should