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| author | Yinghao Xie <yinghao.xie@samsung.com> | 2015-04-15 16:15:49 -0700 |
|---|---|---|
| committer | Greg Hackmann <ghackmann@google.com> | 2015-12-09 11:13:14 -0800 |
| commit | b67c3a0a5a4622b8538c8ff4cecc4c4dd5ed5a17 (patch) | |
| tree | 72da8623f675c94d95c94edcd9c7e8266c80c826 | |
| parent | 623b6e63f96cd6f8a143f851c5eb4244a39f1aa6 (diff) | |
UPSTREAM: mm/zsmalloc.c: fix comment for get_pages_per_zspage
(cherry-pick from commit 888fa374e625f3ee8f3cc2efebf52939d3bb6da1)
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>
Bug: 25951511
Change-Id: I575b54fd6da328eb982b5e92e1b2e983985d7019
| -rw-r--r-- | mm/zsmalloc.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c index 1833fc9e09cb..7a48e5568d46 100644 --- a/mm/zsmalloc.c +++ b/mm/zsmalloc.c @@ -731,7 +731,8 @@ 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 |