fsnotify: add empty fsnotify_{unlink,rmdir}() hooks

We would like to move fsnotify_nameremove() calls from d_delete()
into a higher layer where the hook makes more sense and so we can
consider every d_delete() call site individually.

Start by creating empty hook fsnotify_{unlink,rmdir}() and place
them in the proper VFS call sites.  After all d_delete() call sites
will be converted to use the new hook, the new hook will generate the
delete events and fsnotify_nameremove() hook will be removed.

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>

1 files changed, 26 insertions, 0 deletions

diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 94972e8eb6d1..7f23eddefcd0 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -189,6 +189,19 @@ static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct
 }
 
 /*
+ * fsnotify_unlink - 'name' was unlinked
+ *
+ * Caller must make sure that dentry->d_name is stable.
+ */
+static inline void fsnotify_unlink(struct inode *dir, struct dentry *dentry)
+{
+	/* Expected to be called before d_delete() */
+	WARN_ON_ONCE(d_is_negative(dentry));
+
+	/* TODO: call fsnotify_dirent() */
+}
+
+/*
  * fsnotify_mkdir - directory 'name' was created
  */
 static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
@@ -199,6 +212,19 @@ static inline void fsnotify_mkdir(struct inode *inode, struct dentry *dentry)
 }
 
 /*
+ * fsnotify_rmdir - directory 'name' was removed
+ *
+ * Caller must make sure that dentry->d_name is stable.
+ */
+static inline void fsnotify_rmdir(struct inode *dir, struct dentry *dentry)
+{
+	/* Expected to be called before d_delete() */
+	WARN_ON_ONCE(d_is_negative(dentry));
+
+	/* TODO: call fsnotify_dirent() */
+}
+
+/*
  * fsnotify_access - file was read
  */
 static inline void fsnotify_access(struct file *file)