ref_tracker: add a way to create a symlink to the ref_tracker_dir debugfs file

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Add the ability for a subsystem to add a user-friendly symlink that
points to a ref_tracker_dir's debugfs file. Add a separate
debugfs_symlinks xarray and use that to track symlinks. The reaper
workqueue job will remove symlinks before their corresponding dentries.

Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20250618-reftrack-dbgfs-v15-7-24fc37ead144@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Jeff Layton 2025-06-18 10:24:20 -04:00 • committed by Jakub Kicinski

parent 65b584f536

commit d04992dc86

2 changed files with 61 additions and 0 deletions

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11

include/linux/ref_tracker.h

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50

lib/ref_tracker.c

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