fsnotify: generalize handle_inode_event()

The handle_inode_event() interface was added as (quoting comment):
"a simple variant of handle_event() for groups that only have inode
marks and don't have ignore mask".

In other words, all backends except fanotify.  The inotify backend
also falls under this category, but because it required extra arguments
it was left out of the initial pass of backends conversion to the
simple interface.

This results in code duplication between the generic helper
fsnotify_handle_event() and the inotify_handle_event() callback
which also happen to be buggy code.

Generalize the handle_inode_event() arguments and add the check for
FS_EXCL_UNLINK flag to the generic helper, so inotify backend could
be converted to use the simple interface.

Link: https://lore.kernel.org/r/20201202120713.702387-2-amir73il@gmail.com
CC: stable@vger.kernel.org
Fixes: b9a1b9772509 ("fsnotify: create method handle_inode_event() in fsnotify_operations")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/audit_watch.c b/kernel/audit_watch.c
index 246e5ba704c0..2acf7ca49154 100644
--- a/kernel/audit_watch.c
+++ b/kernel/audit_watch.c
@@ -466,7 +466,7 @@ void audit_remove_watch_rule(struct audit_krule *krule)
 /* Update watch data in audit rules based on fsnotify events. */
 static int audit_watch_handle_event(struct fsnotify_mark *inode_mark, u32 mask,
 				    struct inode *inode, struct inode *dir,
-				    const struct qstr *dname)
+				    const struct qstr *dname, u32 cookie)
 {
 	struct audit_parent *parent;