The patch titled
Subject: zram: remove writestall zram_stats member
has been added to the -mm mm-unstable branch. Its filename is
zram-remove-writestall-zram_stats-member.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zram-remove-writestall-zram_stats-member.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zram: remove writestall zram_stats member
Date: Mon, 27 Jan 2025 16:29:19 +0900
There is no zsmalloc handle allocation slow path now and writestall is not
possible any longer. Remove it from zram_stats.
Link: https://lkml.kernel.org/r/20250127072932.1289973-9-senozhatsky@xxxxxxxxxxxx
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 3 +--
drivers/block/zram/zram_drv.h | 1 -
2 files changed, 1 insertion(+), 3 deletions(-)
--- a/drivers/block/zram/zram_drv.c~zram-remove-writestall-zram_stats-member
+++ a/drivers/block/zram/zram_drv.c
@@ -1437,9 +1437,8 @@ static ssize_t debug_stat_show(struct de
down_read(&zram->init_lock);
ret = scnprintf(buf, PAGE_SIZE,
- "version: %d\n%8llu %8llu\n",
+ "version: %d\n0 %8llu\n",
version,
- (u64)atomic64_read(&zram->stats.writestall),
(u64)atomic64_read(&zram->stats.miss_free));
up_read(&zram->init_lock);
--- a/drivers/block/zram/zram_drv.h~zram-remove-writestall-zram_stats-member
+++ a/drivers/block/zram/zram_drv.h
@@ -78,7 +78,6 @@ struct zram_stats {
atomic64_t huge_pages_since; /* no. of huge pages since zram set up */
atomic64_t pages_stored; /* no. of pages currently stored */
atomic_long_t max_used_pages; /* no. of maximum pages stored */
- atomic64_t writestall; /* no. of write slow paths */
atomic64_t miss_free; /* no. of missed free */
#ifdef CONFIG_ZRAM_WRITEBACK
atomic64_t bd_count; /* no. of pages in backing device */
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
zram-switch-to-non-atomic-entry-locking.patch
zram-do-not-use-per-cpu-compression-streams.patch
zram-remove-crypto-include.patch
zram-remove-max_comp_streams-device-attr.patch
zram-remove-two-staged-handle-allocation.patch
zram-permit-reclaim-in-zstd-custom-allocator.patch
zram-permit-reclaim-in-recompression-handle-allocation.patch
zram-remove-writestall-zram_stats-member.patch
zram-unlock-slot-during-recompression.patch
