diff options
| author | Minchan Kim <minchan@kernel.org> | 2017-07-06 15:37:12 -0700 |
|---|---|---|
| committer | Peter Kalauskas <peskal@google.com> | 2018-08-23 12:00:19 -0700 |
| commit | c30307c479f23b3e47fd8a4c692bcaff7bdee77b (patch) | |
| tree | 34a73a07a9015fb84c0c18af8499e0164fceb52e | |
| parent | 69aa01aaee7c8207c5bc10c1360f0398eb412b85 (diff) | |
UPSTREAM: zram: count same page write as page_stored
Regardless of whether it is same page or not, it's surely write and
stored to zram so we should increase pages_stored stat. Otherwise, user
can see zero value via mm_stats although he writes a lot of pages to
zram.
Link: http://lkml.kernel.org/r/1494834068-27004-1-git-send-email-minchan@kernel.org
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit 51f9f82c855d65ef14c2af10e0d2c86ec332a182)
Signed-off-by: Peter Kalauskas <peskal@google.com>
Bug: 112488418
Change-Id: I006d80df413a0fe0fd7dd58e535c6a2c03ab2c9d
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 2db2459857fb..ac9b1cacb970 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -468,6 +468,7 @@ static bool zram_same_page_write(struct zram *zram, u32 index, zram_slot_unlock(zram, index); atomic64_inc(&zram->stats.same_pages); + atomic64_inc(&zram->stats.pages_stored); return true; } kunmap_atomic(mem); @@ -523,6 +524,7 @@ static void zram_free_page(struct zram *zram, size_t index) zram_clear_flag(zram, index, ZRAM_SAME); zram_set_element(zram, index, 0); atomic64_dec(&zram->stats.same_pages); + atomic64_dec(&zram->stats.pages_stored); return; } |