Steven Rostedt (Google) 055907ad2c eventfs: Use simple_recursive_removal() to clean up dentries ... commit 407c6726ca upstream Looking at how dentry is removed via the tracefs system, I found that eventfs does not do everything that it did under tracefs. The tracefs removal of a dentry calls simple_recursive_removal() that does a lot more than a simple d_invalidate(). As it should be a requirement that any eventfs_inode that has a dentry, so does its parent. When removing a eventfs_inode, if it has a dentry, a call to simple_recursive_removal() on that dentry should clean up all the dentries underneath it. Add WARN_ON_ONCE() to check for the parent having a dentry if any children do. Link: https://lore.kernel.org/all/20231101022553.GE1957730@ZenIV/ Link: https://lkml.kernel.org/r/20231101172650.552471568@goodmis.org Cc: stable@vger.kernel.org Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Fixes: 5bdcd5f533 ("eventfs: Implement removal of meta data from eventfs") Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-11-08 11:56:21 +01:00
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event_inode.c	eventfs: Use simple_recursive_removal() to clean up dentries	2023-11-08 11:56:21 +01:00
inode.c	tracefs/eventfs: Use dput to free the toplevel events directory	2023-09-07 16:04:47 -04:00
internal.h	tracefs/eventfs: Use dput to free the toplevel events directory	2023-09-07 16:04:47 -04:00
Makefile	eventfs: Implement eventfs dir creation functions	2023-07-30 18:13:33 -04:00