The patch titled
Subject: zram-introduce-per-device-debug_stat-sysfs-node-update
has been added to the -mm tree. Its filename is
zram-introduce-per-device-debug_stat-sysfs-node-update.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/zram-introduce-per-device-debug_stat-sysfs-node-update.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/zram-introduce-per-device-debug_stat-sysfs-node-update.patch
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------------------------------------------------------
From: Minchan Kim <minchan@xxxxxxxxxx>
Subject: zram-introduce-per-device-debug_stat-sysfs-node-update
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/ABI/testing/sysfs-block-zram | 4 +++-
drivers/block/zram/zram_drv.c | 6 +++---
drivers/block/zram/zram_drv.h | 2 +-
3 files changed, 7 insertions(+), 5 deletions(-)
diff -puN Documentation/ABI/testing/sysfs-block-zram~zram-introduce-per-device-debug_stat-sysfs-node-update Documentation/ABI/testing/sysfs-block-zram
--- a/Documentation/ABI/testing/sysfs-block-zram~zram-introduce-per-device-debug_stat-sysfs-node-update
+++ a/Documentation/ABI/testing/sysfs-block-zram
@@ -172,4 +172,6 @@ Date: July 2016
Contact: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Description:
The debug_stat file is read-only and represents various
- device's debugging info.
+ device's debugging info useful for kernel developers. Its
+ format is not documented intentionally and may change
+ anytime without any notice.
diff -puN drivers/block/zram/zram_drv.c~zram-introduce-per-device-debug_stat-sysfs-node-update drivers/block/zram/zram_drv.c
--- a/drivers/block/zram/zram_drv.c~zram-introduce-per-device-debug_stat-sysfs-node-update
+++ a/drivers/block/zram/zram_drv.c
@@ -438,7 +438,7 @@ static ssize_t mm_stat_show(struct devic
static ssize_t debug_stat_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
- unsigned int version = 1;
+ int version = 1;
struct zram *zram = dev_to_zram(dev);
ssize_t ret;
@@ -446,7 +446,7 @@ static ssize_t debug_stat_show(struct de
ret = scnprintf(buf, PAGE_SIZE,
"version: %d\n%8llu\n",
version,
- (u64)atomic64_read(&zram->stats.num_recompress));
+ (u64)atomic64_read(&zram->stats.writestall));
up_read(&zram->init_lock);
return ret;
@@ -737,7 +737,7 @@ compress_again:
zcomp_strm_release(zram->comp, zstrm);
zstrm = NULL;
- atomic64_inc(&zram->stats.num_recompress);
+ atomic64_inc(&zram->stats.writestall);
handle = zs_malloc(meta->mem_pool, clen,
GFP_NOIO | __GFP_HIGHMEM);
diff -puN drivers/block/zram/zram_drv.h~zram-introduce-per-device-debug_stat-sysfs-node-update drivers/block/zram/zram_drv.h
--- a/drivers/block/zram/zram_drv.h~zram-introduce-per-device-debug_stat-sysfs-node-update
+++ a/drivers/block/zram/zram_drv.h
@@ -85,7 +85,7 @@ struct zram_stats {
atomic64_t zero_pages; /* no. of zero filled pages */
atomic64_t pages_stored; /* no. of pages currently stored */
atomic_long_t max_used_pages; /* no. of maximum pages stored */
- atomic64_t num_recompress; /* no. of compression slow paths */
+ atomic64_t writestall; /* no. of write slow paths */
};
struct zram_meta {
_
Patches currently in -mm which might be from minchan@xxxxxxxxxx are
zsmalloc-use-first_page-rather-than-page.patch
zsmalloc-clean-up-many-bug_on.patch
zsmalloc-reordering-function-parameter.patch
zsmalloc-remove-unused-pool-param-in-obj_free.patch
zram-introduce-per-device-debug_stat-sysfs-node-update.patch
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