From 8dd1d3247e6c00b50ef83934ea8b22a1590015de Mon Sep 17 00:00:00 2001 From: Sergey Senozhatsky Date: Mon, 7 Apr 2014 15:38:08 -0700 Subject: [PATCH] zram: document failed_reads, failed_writes stats Document `failed_reads' and `failed_writes' device attributes. Remove info about `discard' - there is no such zram attr. Signed-off-by: Sergey Senozhatsky Cc: Minchan Kim Cc: Jerome Marchand Cc: Nitin Gupta Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- Documentation/ABI/testing/sysfs-block-zram | 24 ++++++++++++++-------- Documentation/blockdev/zram.txt | 3 ++- 2 files changed, 17 insertions(+), 10 deletions(-) diff --git a/Documentation/ABI/testing/sysfs-block-zram b/Documentation/ABI/testing/sysfs-block-zram index 3f0b9ae61d8c..8aa046841625 100644 --- a/Documentation/ABI/testing/sysfs-block-zram +++ b/Documentation/ABI/testing/sysfs-block-zram @@ -43,6 +43,21 @@ Description: The invalid_io file is read-only and specifies the number of non-page-size-aligned I/O requests issued to this device. +What: /sys/block/zram/failed_reads +Date: February 2014 +Contact: Sergey Senozhatsky +Description: + The failed_reads file is read-only and specifies the number of + failed reads happened on this device. + + +What: /sys/block/zram/failed_writes +Date: February 2014 +Contact: Sergey Senozhatsky +Description: + The failed_writes file is read-only and specifies the number of + failed writes happened on this device. + What: /sys/block/zram/notify_free Date: August 2010 Contact: Nitin Gupta @@ -53,15 +68,6 @@ Description: is freed. This statistic is applicable only when this disk is being used as a swap disk. -What: /sys/block/zram/discard -Date: August 2010 -Contact: Nitin Gupta -Description: - The discard file is read-only and specifies the number of - discard requests received by this device. These requests - provide information to block device regarding blocks which are - no longer used by filesystem. - What: /sys/block/zram/zero_pages Date: August 2010 Contact: Nitin Gupta diff --git a/Documentation/blockdev/zram.txt b/Documentation/blockdev/zram.txt index 393541be1ec0..b31ac5e5d4b9 100644 --- a/Documentation/blockdev/zram.txt +++ b/Documentation/blockdev/zram.txt @@ -51,9 +51,10 @@ size of the disk when not in use so a huge zram is wasteful. disksize num_reads num_writes + failed_reads + failed_writes invalid_io notify_free - discard zero_pages orig_data_size compr_data_size -- 2.20.1