fs/dcache.c: is_subdir can be boolean

This patch makes is_subdir return bool to improve
readability due to this particular function only using either
one or zero as its return value.

No functional change.

Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 7 insertions, 7 deletions

diff --git a/fs/dcache.c b/fs/dcache.c
index 5c33aeb0f68f..670f7896945b 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -3303,18 +3303,18 @@ out:
  * @new_dentry: new dentry
  * @old_dentry: old dentry
  *
- * Returns 1 if new_dentry is a subdirectory of the parent (at any depth).
- * Returns 0 otherwise.
+ * Returns true if new_dentry is a subdirectory of the parent (at any depth).
+ * Returns false otherwise.
  * Caller must ensure that "new_dentry" is pinned before calling is_subdir()
  */
   
-int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
+bool is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
 {
-        int result;
+        bool result;
         unsigned seq;
 
         if (new_dentry == old_dentry)
-                return 1;
+                return true;
 
         do {
                 /* for restarting inner loop in case of seq retry */
@@ -3325,9 +3325,9 @@ int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
                  */
                 rcu_read_lock();
                 if (d_ancestor(old_dentry, new_dentry))
-                        result = 1;
+                        result = true;
                 else
-                        result = 0;
+                        result = false;
                 rcu_read_unlock();
         } while (read_seqretry(&rename_lock, seq));