On Wed, Jun 11, 2025 at 12:18:15PM -0400, Steven Rostedt wrote: > From: Steven Rostedt <[email protected]> > > If a lookup in tracefs is done on a file that does not exist, it leaves a > dentry hanging around until memory pressure removes it. But eventfs > dentries should hang around as when their ref count goes to zero, it > requires more work to recreate it. For the rest of the tracefs dentries, > they hang around as their dentry is used as a descriptor for the tracing > system. But if a file lookup happens for a file in tracefs that does not > exist, it should be deleted. > > Add a .d_delete callback that checks if dentry->fsdata is set or not. Only > eventfs dentries set fsdata so if it has content it should not be deleted > and should hang around in the cache. > > Reported-by: Al Viro <[email protected]> > Signed-off-by: Steven Rostedt (Google) <[email protected]>
Applied to #work.dcache
