zram: remove unused stats fields
Commit Message
We don't show num_reads and num_writes since we removed
corresponding sysfs nodes in 2017. Block layer stats are
exposed via /sys/block/zramX/stat file.
However, we still increment those atomic vars and store
them in zram stats. Remove leftovers.
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
---
drivers/block/zram/zram_drv.c | 2 --
drivers/block/zram/zram_drv.h | 2 --
2 files changed, 4 deletions(-)
Comments
On Thu, Nov 17, 2022 at 11:13:26PM +0900, Sergey Senozhatsky wrote:
> We don't show num_reads and num_writes since we removed
> corresponding sysfs nodes in 2017. Block layer stats are
> exposed via /sys/block/zramX/stat file.
>
> However, we still increment those atomic vars and store
> them in zram stats. Remove leftovers.
>
> Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Minchan Kim <minchan@kernel.org>
@@ -2033,11 +2033,9 @@ static int zram_bvec_rw(struct zram *zram, struct bio_vec *bvec, u32 index,
int ret;
if (!op_is_write(op)) {
- atomic64_inc(&zram->stats.num_reads);
ret = zram_bvec_read(zram, bvec, index, offset, bio);
flush_dcache_page(bvec->bv_page);
} else {
- atomic64_inc(&zram->stats.num_writes);
ret = zram_bvec_write(zram, bvec, index, offset, bio);
}
@@ -76,8 +76,6 @@ struct zram_table_entry {
struct zram_stats {
atomic64_t compr_data_size; /* compressed size of pages stored */
- atomic64_t num_reads; /* failed + successful */
- atomic64_t num_writes; /* --do-- */
atomic64_t failed_reads; /* can happen when memory is too low */
atomic64_t failed_writes; /* can happen when memory is too low */
atomic64_t invalid_io; /* non-page-aligned I/O requests */