Changes in sysfs-fs-ext4

4ec0b092 - docs: ABI: Drop trailing whitespace

Tue, 10 Nov 2020 14:40:33 +0000

docs: ABI: Drop trailing whitespaceRemove all trailing whitespace from the ABI documentation.Most of it was introduced during recent updates.Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20201110144033.3278499-1-geert+renesas@glider.beSigned-off-by: Jonathan Corbet List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4

34433332 - docs: ABI: testing: make the files compatible with ReST output

Fri, 30 Oct 2020 07:40:39 +0000

docs: ABI: testing: make the files compatible with ReST outputSome files over there won't parse well by Sphinx.Fix them.Acked-by: Jonathan Cameron # for IIOAcked-by: Fabrice Gasnier Acked-by: Jonathan Corbet Signed-off-by: Mauro Carvalho Chehab Link: https://lore.kernel.org/r/58cf3c2d611e0197fb215652719ebd82ca2658db.1604042072.git.mchehab+huawei@kernel.orgSigned-off-by: Greg Kroah-Hartman List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4

bc1d69d6 - ext4: add sysfs attr /sys/fs/ext4//journal_task

Thu, 21 Feb 2019 16:49:27 +0000

ext4: add sysfs attr /sys/fs/ext4//journal_taskThis is useful for moving journal thread into cgroup orfor tracing it with ftrace/perf/blktrace.For now the only way is `pgrep jbd2/$DISK` but this is not reliable:name may be longer than "comm" limit and any task could mock it.Attribute shows pid in current pid-namespace or 0 if task is unreachable.Signed-off-by: Konstantin Khlebnikov Signed-off-by: Theodore Ts'o List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4

67a5da56 - ext4: make the zero-out chunk size tunable

Fri, 17 Aug 2012 13:54:17 +0000

ext4: make the zero-out chunk size tunableCurrently in ext4 the length of zero-out chunk is set to 7 file systemblocks. But if an inode has uninitailized extents from usingfallocate to preallocate space, and the workload issues many randomwrites, this can cause a fragmented extent tree that willunnecessarily grow the extent tree.So create a new sysfs tunable, extent_max_zeroout_kb, which controlsthe maximum size where blocks will be zeroed out instead of creating anew uninitialized extent. The default of this has been sent to 32kb.CC: Zach Brown CC: Andreas Dilger Signed-off-by: Zheng Liu Signed-off-by: "Theodore Ts'o" List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4

6f9524e9 - ext4: update ext4 documentation

Tue, 22 Feb 2011 01:16:21 +0000

ext4: update ext4 documentationAdd documentation for mount options and ioctls toDocumentation/filesystem/ext4.txt, which has not been udpated for sometime. Also add for ext4 sysfs tunables to theDocumentation/ABI/testing/sysfs-fs-ext4 file, and fix a fewtypographical errors in that file.https://bugzilla.kernel.org/show_bug.cgi?id=9423Signed-off-by: Lukas Czerner Signed-off-by: "Theodore Ts'o" List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4

11013911 - ext4: teach the inode allocator to use a goal inode number

Sat, 13 Jun 2009 15:45:35 +0000

ext4: teach the inode allocator to use a goal inode numberEnhance the inode allocator to take a goal inode number as aparemeter; if it is specified, it takes precedence over Orlov orparent directory inode allocation algorithms.The extents migration function uses the goal inode number so that theextent trees allocated the migration function use the correct flex_bg.In the future, the goal inode functionality will also be used toallocate an adjacent inode for the extended attributes.Also, for testing purposes the goal inode number can be specified via/sys/fs/{dev}/inode_goal. This can be useful for testing inodeallocation beyond 2^32 blocks on very large filesystems.Signed-off-by: Andreas Dilger Signed-off-by: "Theodore Ts'o" List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4

3197ebdb - ext4: Add sysfs support

Tue, 31 Mar 2009 13:10:09 +0000

ext4: Add sysfs supportAdd basic sysfs support so that information about the mountedfilesystem and various tuning parameters can be accessed via/sys/fs/ext4//*.Signed-off-by: "Theodore Ts'o" List of files: /linux-6.15/Documentation/ABI/testing/sysfs-fs-ext4