The quilt patch titled
Subject: zram: remove unused stats fields
has been removed from the -mm tree. Its filename was
zram-remove-unused-stats-fields.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zram: remove unused stats fields
Date: Thu, 17 Nov 2022 23:13:26 +0900
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.
Link: https://lkml.kernel.org/r/20221117141326.1105181-1-senozhatsky@xxxxxxxxxxxx
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Nitin Gupta <ngupta@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 2 --
drivers/block/zram/zram_drv.h | 2 --
2 files changed, 4 deletions(-)
--- a/drivers/block/zram/zram_drv.c~zram-remove-unused-stats-fields
+++ a/drivers/block/zram/zram_drv.c
@@ -1981,11 +1981,9 @@ static int zram_bvec_rw(struct zram *zra
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);
}
--- a/drivers/block/zram/zram_drv.h~zram-remove-unused-stats-fields
+++ a/drivers/block/zram/zram_drv.h
@@ -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 */
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
