[PATCH 4/9] fsnotify: create helper fsnotify_inode()

[Amir Goldstein <amir73il@xxxxxxxxx>]

Simple helper to consolidate biolerplate code.

Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
---
 fs/kernfs/file.c         |  6 ++----
 fs/notify/fsnotify.c     |  2 +-
 include/linux/fsnotify.h | 26 +++++++++++---------------
 kernel/trace/trace.c     |  3 +--
 4 files changed, 15 insertions(+), 22 deletions(-)

diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 5b1468bc509e..1d185bffc52f 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -910,10 +910,8 @@ static void kernfs_notify_workfn(struct work_struct *work)
 			kernfs_put(parent);
 		}
 
-		if (!p_inode) {
-			fsnotify(inode, FS_MODIFY, inode, FSNOTIFY_EVENT_INODE,
-				 NULL, 0);
-		}
+		if (!p_inode)
+			fsnotify_inode(inode, FS_MODIFY);
 
 		iput(inode);
 	}
diff --git a/fs/notify/fsnotify.c b/fs/notify/fsnotify.c
index efa5c1c4908a..277af3d5efce 100644
--- a/fs/notify/fsnotify.c
+++ b/fs/notify/fsnotify.c
@@ -74,7 +74,7 @@ static void fsnotify_unmount_inodes(struct super_block *sb)
 			iput(iput_inode);
 
 		/* for each watch, send FS_UNMOUNT and then remove it */
-		fsnotify(inode, FS_UNMOUNT, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+		fsnotify_inode(inode, FS_UNMOUNT);
 
 		fsnotify_inode_delete(inode);
 
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index fe4f2bc5b4c2..01b71ad91339 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -38,6 +38,14 @@ static inline void fsnotify_dirent(struct inode *dir, struct dentry *dentry,
 	fsnotify_name(dir, mask, d_inode(dentry), &dentry->d_name, 0);
 }
 
+static inline void fsnotify_inode(struct inode *inode, __u32 mask)
+{
+	if (S_ISDIR(inode->i_mode))
+		mask |= FS_ISDIR;
+
+	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+}
+
 /* Notify this dentry's parent about a child's events. */
 static inline int fsnotify_parent(struct dentry *dentry, __u32 mask,
 				  const void *data, int data_type)
@@ -111,12 +119,7 @@ static inline int fsnotify_perm(struct file *file, int mask)
  */
 static inline void fsnotify_link_count(struct inode *inode)
 {
-	__u32 mask = FS_ATTRIB;
-
-	if (S_ISDIR(inode->i_mode))
-		mask |= FS_ISDIR;
-
-	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+	fsnotify_inode(inode, FS_ATTRIB);
 }
 
 /*
@@ -131,7 +134,6 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 	u32 fs_cookie = fsnotify_get_cookie();
 	__u32 old_dir_mask = FS_MOVED_FROM;
 	__u32 new_dir_mask = FS_MOVED_TO;
-	__u32 mask = FS_MOVE_SELF;
 	const struct qstr *new_name = &moved->d_name;
 
 	if (old_dir == new_dir)
@@ -140,7 +142,6 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 	if (isdir) {
 		old_dir_mask |= FS_ISDIR;
 		new_dir_mask |= FS_ISDIR;
-		mask |= FS_ISDIR;
 	}
 
 	fsnotify_name(old_dir, old_dir_mask, source, old_name, fs_cookie);
@@ -149,7 +150,7 @@ static inline void fsnotify_move(struct inode *old_dir, struct inode *new_dir,
 	if (target)
 		fsnotify_link_count(target);
 
-	fsnotify(source, mask, source, FSNOTIFY_EVENT_INODE, NULL, 0);
+	fsnotify_inode(source, FS_MOVE_SELF);
 	audit_inode_child(new_dir, moved, AUDIT_TYPE_CHILD_CREATE);
 }
 
@@ -174,12 +175,7 @@ static inline void fsnotify_vfsmount_delete(struct vfsmount *mnt)
  */
 static inline void fsnotify_inoderemove(struct inode *inode)
 {
-	__u32 mask = FS_DELETE_SELF;
-
-	if (S_ISDIR(inode->i_mode))
-		mask |= FS_ISDIR;
-
-	fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+	fsnotify_inode(inode, FS_DELETE_SELF);
 	__fsnotify_inode_delete(inode);
 }
 
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index bb62269724d5..0c655c039506 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1543,8 +1543,7 @@ static void latency_fsnotify_workfn(struct work_struct *work)
 {
 	struct trace_array *tr = container_of(work, struct trace_array,
 					      fsnotify_work);
-	fsnotify(tr->d_max_latency->d_inode, FS_MODIFY,
-		 tr->d_max_latency->d_inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+	fsnotify_inode(tr->d_max_latency->d_inode, FS_MODIFY);
 }
 
 static void latency_fsnotify_workfn_irq(struct irq_work *iwork)
-- 
2.17.1