new helper: is_root_inode()

replace open-coded instances Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2014-10-21 15:20:42 -04:00
parent ac7576f4b1
commit a7400222e3
5 changed files with 13 additions and 15 deletions
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2789,6 +2789,11 @@ static inline void inode_has_no_xattr(struct inode *inode)
 		inode->i_flags |= S_NOSEC;
 }

+static inline bool is_root_inode(struct inode *inode)
+{
+	return inode == inode->i_sb->s_root->d_inode;
+}
+
 static inline bool dir_emit(struct dir_context *ctx,
 			    const char *name, int namelen,
 			    u64 ino, unsigned type)