diff options
| author | Sergey Senozhatsky <sergey.senozhatsky@gmail.com> | 2014-04-07 15:38:02 -0700 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2015-05-11 20:41:53 +0800 |
| commit | e700d5f0d65058709b17623728a356e2c16a3a3a (patch) | |
| tree | 4dc1c58d71cdd212288775b0a545cca0d921a092 /drivers/block/zram/zram_drv.c | |
| parent | 18bebabb7ecc3c03e3339d825141908814a4cf59 (diff) | |
zram: remove good and bad compress stats
Remove `good' and `bad' compressed sub-requests stats. RW request may
cause a number of RW sub-requests. zram used to account `good' compressed
sub-queries (with compressed size less than 50% of original size), `bad'
compressed sub-queries (with compressed size greater that 75% of original
size), leaving sub-requests with compression size between 50% and 75% of
original size not accounted and not reported. zram already accounts each
sub-request's compression size so we can calculate real device compression
ratio.
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
(cherry picked from commit b7cccf8b4009bf74df61f3c9d86b95fabd807c11)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Diffstat (limited to 'drivers/block/zram/zram_drv.c')
| -rw-r--r-- | drivers/block/zram/zram_drv.c | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 3f98cf21c7f0..a09618cc9e68 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -292,7 +292,6 @@ static void zram_free_page(struct zram *zram, size_t index) { struct zram_meta *meta = zram->meta; unsigned long handle = meta->table[index].handle; - u16 size = meta->table[index].size; if (unlikely(!handle)) { /* @@ -306,14 +305,8 @@ static void zram_free_page(struct zram *zram, size_t index) return; } - if (unlikely(size > max_zpage_size)) - atomic_dec(&zram->stats.bad_compress); - zs_free(meta->mem_pool, handle); - if (size <= PAGE_SIZE / 2) - atomic_dec(&zram->stats.good_compress); - atomic64_sub(meta->table[index].size, &zram->stats.compr_size); atomic_dec(&zram->stats.pages_stored); @@ -477,7 +470,6 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec, u32 index, } if (unlikely(clen > max_zpage_size)) { - atomic_inc(&zram->stats.bad_compress); clen = PAGE_SIZE; src = NULL; if (is_partial_io(bvec)) @@ -517,9 +509,6 @@ static int zram_bvec_write(struct zram *zram, struct bio_vec *bvec, u32 index, /* Update stats */ atomic64_add(clen, &zram->stats.compr_size); atomic_inc(&zram->stats.pages_stored); - if (clen <= PAGE_SIZE / 2) - atomic_inc(&zram->stats.good_compress); - out: if (locked) mutex_unlock(&meta->buffer_lock); |