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kernfs: Add missing documentation for kernfs_put_active's drop_supers argument

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The drop_supers argument was added to kernfs_put_active to control
whether the kernfs_supers_rwsem is temporarily dropped along with the
kernfs_rwsem, but no documentation was added for it.

Fixes: eea5d2bb34 ("kernfs: Send IN_DELETE_SELF and IN_IGNORED")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202603130112.2FcCzv1g-lkp@intel.com/
Signed-off-by: T.J. Mercier <tjmercier@google.com>
Link: https://patch.msgid.link/20260313175153.235681-1-tjmercier@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
T.J. Mercier 2026-03-13 10:51:53 -07:00 committed by Greg Kroah-Hartman
parent 10f874dc92
commit 16de94a1b0
1 changed files with 2 additions and 0 deletions
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2
fs/kernfs/dir.c
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@ -481,6 +481,8 @@ void kernfs_put_active(struct kernfs_node *kn)
/**
* kernfs_drain - drain kernfs_node
* @kn: kernfs_node to drain
* @drop_supers: Set to true if this function is called with the
* kernfs_supers_rwsem locked.
*
* Drain existing usages and nuke all existing mmaps of @kn. Multiple
* removers may invoke this function concurrently on @kn and all will