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authorMinchan Kim <minchan@kernel.org>2017-07-07 01:37:12 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-07 02:24:31 +0300
commit51f9f82c855d65ef14c2af10e0d2c86ec332a182 (patch)
treed806e1d2add2aaae7ec9a48282751048a384b6c3
parent80b18dfa53bbb03085eba6401f5d29dad49205b7 (diff)
downloadlinux-51f9f82c855d65ef14c2af10e0d2c86ec332a182.tar.xz
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>
-rw-r--r--drivers/block/zram/zram_drv.c2
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;
}