Commit 8dd1d324 authored by Sergey Senozhatsky's avatar Sergey Senozhatsky Committed by Linus Torvalds

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: default avatarSergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent e64cd51d
...@@ -43,6 +43,21 @@ Description: ...@@ -43,6 +43,21 @@ Description:
The invalid_io file is read-only and specifies the number of The invalid_io file is read-only and specifies the number of
non-page-size-aligned I/O requests issued to this device. non-page-size-aligned I/O requests issued to this device.
What: /sys/block/zram<id>/failed_reads
Date: February 2014
Contact: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Description:
The failed_reads file is read-only and specifies the number of
failed reads happened on this device.
What: /sys/block/zram<id>/failed_writes
Date: February 2014
Contact: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Description:
The failed_writes file is read-only and specifies the number of
failed writes happened on this device.
What: /sys/block/zram<id>/notify_free What: /sys/block/zram<id>/notify_free
Date: August 2010 Date: August 2010
Contact: Nitin Gupta <ngupta@vflare.org> Contact: Nitin Gupta <ngupta@vflare.org>
...@@ -53,15 +68,6 @@ Description: ...@@ -53,15 +68,6 @@ Description:
is freed. This statistic is applicable only when this disk is is freed. This statistic is applicable only when this disk is
being used as a swap disk. being used as a swap disk.
What: /sys/block/zram<id>/discard
Date: August 2010
Contact: Nitin Gupta <ngupta@vflare.org>
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<id>/zero_pages What: /sys/block/zram<id>/zero_pages
Date: August 2010 Date: August 2010
Contact: Nitin Gupta <ngupta@vflare.org> Contact: Nitin Gupta <ngupta@vflare.org>
......
...@@ -51,9 +51,10 @@ size of the disk when not in use so a huge zram is wasteful. ...@@ -51,9 +51,10 @@ size of the disk when not in use so a huge zram is wasteful.
disksize disksize
num_reads num_reads
num_writes num_writes
failed_reads
failed_writes
invalid_io invalid_io
notify_free notify_free
discard
zero_pages zero_pages
orig_data_size orig_data_size
compr_data_size compr_data_size
......
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