btrfs: sysfs: introduce global qgroup attribute group

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Although we already have info kobject for each qgroup, we don't have
global qgroup info attributes to show things like enabled or
inconsistent status flags.

Add this qgroups attribute groups, and the first member is qgroup_flags,
which is a read-only attribute to show human readable qgroup flags.

The path is:
  /sys/fs/btrfs/<uuid>/qgroups/enabled
  /sys/fs/btrfs/<uuid>/qgroups/inconsistent

The output is simple, just 1 or 0.

Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Qu Wenruo 2022-08-24 09:14:05 +08:00 • committed by David Sterba

parent ac3c0d36a2

commit ed2e35d85d

1 changed files with 61 additions and 4 deletions

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fs/btrfs/sysfs.c

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