UPSTREAM: mm/zsmalloc.c: fix comment for get_pages_per_zspage
(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:
parent
588deb99ca
commit
f3ff102b86
|
@ -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
|
||||
|
|
Loading…
Reference in New Issue