On Wed 18-02-26 10:06:35, T.J. Mercier wrote:
> On Wed, Feb 18, 2026 at 10:01 AM Jan Kara <[email protected]> wrote:
> >
> > On Tue 17-02-26 19:22:31, T.J. Mercier wrote:
> > > Currently some kernfs files (e.g. cgroup.events, memory.events) support
> > > inotify watches for IN_MODIFY, but unlike with regular filesystems, they
> > > do not receive IN_DELETE_SELF or IN_IGNORED events when they are
> > > removed.
> >
> > Please see my email:
> > https://lore.kernel.org/all/lc2jgt3yrvuvtdj2kk7q3rloie2c5mzyhfdy4zvxylx732voet@ol3kl4ackrpb
> >
> > I think this is actually a bug in kernfs...
> >
> > Honza
>
> Thanks, I'm looking at this now. I've tried calling clear_nlink in
> kernfs_iop_rmdir, but I've found that when we get back to vfs_rmdir
> and shrink_dcache_parent is called, d_walk doesn't find any entries,
> so shrink_kill->__dentry_kill is not called. I'm investigating why
> that is...
Strange because when I was experimenting with this in my VM I have seen
__dentry_kill being called (if the dentries were created by someone looking
up the names).
Honza
--
Jan Kara <[email protected]>
SUSE Labs, CR
