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| author |   Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com> | 2014-08-08 14:20:42 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-08 15:57:20 -0700 |
| commit | caa05d49dfd7fe04820ba8b7e424343d5426a7f3 (patch) | |
| tree | db3d3a85b97d9cbedf982e323771c0f1ad634b5f /Documentation | |
| parent | nilfs2: add /sys/fs/nilfs2/<device> group (diff) | |
| download | linux-dev-caa05d49dfd7fe04820ba8b7e424343d5426a7f3.tar.xz linux-dev-caa05d49dfd7fe04820ba8b7e424343d5426a7f3.zip | |
nilfs2: add /sys/fs/nilfs2/<device>/superblock group
This patch adds creation of /sys/fs/nilfs2/<device>/superblock
group.
The superblock group contains attributes that describe
superblock's details:
(1) sb_write_time - show previous write time of super block in
human-readable format.
(2) sb_write_time_secs - show previous write time of super block
in seconds.
(3) sb_write_count - show write count of super block.
(4) sb_update_frequency - show/set interval of periodical update
of superblock (in seconds). You can set preferable frequency of
superblock update by command:
echo <value> > /sys/fs/nilfs2/<device>/superblock/sb_update_frequency
Signed-off-by: Vyacheslav Dubeyko <Vyacheslav.Dubeyko@hgst.com>
Cc: Vyacheslav Dubeyko <slava@dubeyko.com>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Michael L. Semon <mlsemon35@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-nilfs2 | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-nilfs2 b/Documentation/ABI/testing/sysfs-fs-nilfs2 index 0a521d03539a..e9b4c61aa88a 100644 --- a/Documentation/ABI/testing/sysfs-fs-nilfs2 +++ b/Documentation/ABI/testing/sysfs-fs-nilfs2 @@ -56,3 +56,36 @@ Date: April 2014 Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> Description: Describe attributes of /sys/fs/nilfs2/<device> group. + +What: /sys/fs/nilfs2/<device>/superblock/sb_write_time +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show last write time of super block in human-readable + format. + +What: /sys/fs/nilfs2/<device>/superblock/sb_write_time_secs +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show last write time of super block in seconds. + +What: /sys/fs/nilfs2/<device>/superblock/sb_write_count +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show current write count of super block. + +What: /sys/fs/nilfs2/<device>/superblock/sb_update_frequency +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Show/Set interval of periodical update of superblock + (in seconds). + +What: /sys/fs/nilfs2/<device>/superblock/README +Date: April 2014 +Contact: "Vyacheslav Dubeyko" <slava@dubeyko.com> +Description: + Describe attributes of /sys/fs/nilfs2/<device>/superblock + group. |