The patch titled
Subject: zram-introduce-per-device-debug_stat-sysfs-node-update-2
has been added to the -mm tree. Its filename is
zram-introduce-per-device-debug_stat-sysfs-node-update-2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/zram-introduce-per-device-debug_stat-sysfs-node-update-2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/zram-introduce-per-device-debug_stat-sysfs-node-update-2.patch
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------------------------------------------------------
From: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Subject: zram-introduce-per-device-debug_stat-sysfs-node-update-2
Link: http://lkml.kernel.org/r/20160513130358.631-1-sergey.senozhatsky@xxxxxxxxx
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 8 ++++----
drivers/block/zram/zram_drv.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
diff -puN drivers/block/zram/zram_drv.c~zram-introduce-per-device-debug_stat-sysfs-node-update-2 drivers/block/zram/zram_drv.c
--- a/drivers/block/zram/zram_drv.c~zram-introduce-per-device-debug_stat-sysfs-node-update-2
+++ a/drivers/block/zram/zram_drv.c
@@ -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.writestall));
+ (u64)atomic64_read(&zram->stats.num_recompress));
up_read(&zram->init_lock);
return ret;
@@ -737,12 +737,12 @@ compress_again:
zcomp_strm_release(zram->comp, zstrm);
zstrm = NULL;
- atomic64_inc(&zram->stats.writestall);
-
handle = zs_malloc(meta->mem_pool, clen,
GFP_NOIO | __GFP_HIGHMEM);
- if (handle)
+ if (handle) {
+ atomic64_inc(&zram->stats.num_recompress);
goto compress_again;
+ }
pr_err("Error allocating memory for compressed page: %u, size=%zu\n",
index, clen);
diff -puN drivers/block/zram/zram_drv.h~zram-introduce-per-device-debug_stat-sysfs-node-update-2 drivers/block/zram/zram_drv.h
--- a/drivers/block/zram/zram_drv.h~zram-introduce-per-device-debug_stat-sysfs-node-update-2
+++ 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 writestall; /* no. of write slow paths */
+ atomic64_t num_recompress; /* no. of compression slow paths */
};
struct zram_meta {
_
Patches currently in -mm which might be from sergey.senozhatsky@xxxxxxxxx are
zsmalloc-require-gfp-in-zs_malloc.patch
zsmalloc-require-gfp-in-zs_malloc-v2.patch
zram-user-per-cpu-compression-streams.patch
zram-user-per-cpu-compression-streams-fix.patch
zram-remove-max_comp_streams-internals.patch
zram-introduce-per-device-debug_stat-sysfs-node.patch
zram-introduce-per-device-debug_stat-sysfs-node-update-2.patch
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