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zram: remove writestall zram_stats member

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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/20250303022425.285971-8-senozhatsky@chromium.org
Signed-off-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Kairui Song <ryncsn@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Yosry Ahmed <yosry.ahmed@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Sergey Senozhatsky 2025-03-03 11:03:16 +09:00 committed by Andrew Morton
parent 9c7ccc8d99
commit f3b0c6c899
2 changed files with 1 additions and 3 deletions
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3
drivers/block/zram/zram_drv.c
View File

@ -1437,9 +1437,8 @@ static ssize_t debug_stat_show(struct device *dev,
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);

1
drivers/block/zram/zram_drv.h
View File

@ -82,7 +82,6 @@ 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 */