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xfs: add usage counters for scrub [v26.1]

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This series introduces simple usage and performance counters for the
 online fsck subsystem.  The goal here is to enable developers and
 sysadmins to look at summary counts of how many objects were checked and
 repaired; what the outcomes were; and how much time the kernel has spent
 on these operations.  The counter file is exposed in debugfs because
 that's easier than cramming it into the device model, and debugfs
 doesn't have rules against complex file contents, unlike sysfs.
 
 This has been running on the djcloud for months with no problems.  Enjoy!
 
 Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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Merge tag 'scrub-usage-stats-6.6_2023-08-10' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.6-mergeA

xfs: add usage counters for scrub

This series introduces simple usage and performance counters for the
online fsck subsystem.  The goal here is to enable developers and
sysadmins to look at summary counts of how many objects were checked and
repaired; what the outcomes were; and how much time the kernel has spent
on these operations.  The counter file is exposed in debugfs because
that's easier than cramming it into the device model, and debugfs
doesn't have rules against complex file contents, unlike sysfs.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandan.babu@oracle.com>

* tag 'scrub-usage-stats-6.6_2023-08-10' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux:
  xfs: track usage statistics of online fsck
  xfs: create scaffolding for creating debugfs entries
This commit is contained in:
Chandan Babu R 2023-08-18 12:52:16 +05:30
commit 889b09b3d0
12 changed files with 569 additions and 11 deletions
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