diff options
| author |   Minchan Kim <minchan@kernel.org> | 2017-07-06 15:37:12 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-06 16:24:31 -0700 |
| commit | 51f9f82c855d65ef14c2af10e0d2c86ec332a182 (patch) | |
| tree | d806e1d2add2aaae7ec9a48282751048a384b6c3 /drivers/block | |
| parent | ksm: optimize refile of stable_node_dup at the head of the chain (diff) | |
| download | linux-dev-51f9f82c855d65ef14c2af10e0d2c86ec332a182.tar.xz linux-dev-51f9f82c855d65ef14c2af10e0d2c86ec332a182.zip | |
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>
Diffstat (limited to 'drivers/block')
| -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 558e245fab0c..d3e3af22a088 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -469,6 +469,7 @@ 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); @@ -524,6 +525,7 @@ 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; } |