f2fs: introduce f2fs_dentry_kunmap to clean up

This patch introduces f2fs_dentry_kunmap to clean up dirty codes.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/dir.c

@@ -271,8 +271,7 @@ ino_t f2fs_inode_by_name(struct inode *dir, struct qstr *qstr)
 	de = f2fs_find_entry(dir, qstr, &page);
 	if (de) {
 		res = le32_to_cpu(de->ino);
-		if (!f2fs_has_inline_dentry(dir))
-			kunmap(page);
+		f2fs_dentry_kunmap(dir, page);
 		f2fs_put_page(page, 0);
 	}
 

fs/f2fs/f2fs.h

@@ -1229,6 +1229,12 @@ static inline void *inline_dentry_addr(struct page *page)
 	return (void *)&(ri->i_addr[1]);
 }
 
+static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page)
+{
+	if (!f2fs_has_inline_dentry(dir))
+		kunmap(page);
+}
+
 static inline int f2fs_readonly(struct super_block *sb)
 {
 	return sb->s_flags & MS_RDONLY;

fs/f2fs/namei.c

@@ -200,8 +200,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
 	de = f2fs_find_entry(dir, &dentry->d_name, &page);
 	if (de) {
 		nid_t ino = le32_to_cpu(de->ino);
-		if (!f2fs_has_inline_dentry(dir))
-			kunmap(page);
+		f2fs_dentry_kunmap(dir, page);
 		f2fs_put_page(page, 0);
 
 		inode = f2fs_iget(dir->i_sb, ino);
@@ -231,8 +230,7 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
 	err = acquire_orphan_inode(sbi);
 	if (err) {
 		f2fs_unlock_op(sbi);
-		if (!f2fs_has_inline_dentry(dir))
-			kunmap(page);
+		f2fs_dentry_kunmap(dir, page);
 		f2fs_put_page(page, 0);
 		goto fail;
 	}
@@ -469,8 +467,7 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 						old_dir_page, new_dir);
 			update_inode_page(old_inode);
 		} else {
-			if (!f2fs_has_inline_dentry(old_inode))
-				kunmap(old_dir_page);
+			f2fs_dentry_kunmap(old_inode, old_dir_page);
 			f2fs_put_page(old_dir_page, 0);
 		}
 		drop_nlink(old_dir);
@@ -486,18 +483,15 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 put_out_dir:
 	f2fs_unlock_op(sbi);
-	if (!f2fs_has_inline_dentry(new_dir))
-		kunmap(new_page);
+	f2fs_dentry_kunmap(new_dir, new_page);
 	f2fs_put_page(new_page, 0);
 out_dir:
 	if (old_dir_entry) {
-		if (!f2fs_has_inline_dentry(old_inode))
-			kunmap(old_dir_page);
+		f2fs_dentry_kunmap(old_inode, old_dir_page);
 		f2fs_put_page(old_dir_page, 0);
 	}
 out_old:
-	if (!f2fs_has_inline_dentry(old_dir))
-		kunmap(old_page);
+	f2fs_dentry_kunmap(old_dir, old_page);
 	f2fs_put_page(old_page, 0);
 out:
 	return err;
@@ -632,23 +626,19 @@ static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 	f2fs_unlock_op(sbi);
 out_new_dir:
 	if (new_dir_entry) {
-		if (!f2fs_has_inline_dentry(new_inode))
-			kunmap(new_dir_page);
+		f2fs_dentry_kunmap(new_inode, new_dir_page);
 		f2fs_put_page(new_dir_page, 0);
 	}
 out_old_dir:
 	if (old_dir_entry) {
-		if (!f2fs_has_inline_dentry(old_inode))
-			kunmap(old_dir_page);
+		f2fs_dentry_kunmap(old_inode, old_dir_page);
 		f2fs_put_page(old_dir_page, 0);
 	}
 out_new:
-	if (!f2fs_has_inline_dentry(new_dir))
-		kunmap(new_page);
+	f2fs_dentry_kunmap(new_dir, new_page);
 	f2fs_put_page(new_page, 0);
 out_old:
-	if (!f2fs_has_inline_dentry(old_dir))
-		kunmap(old_page);
+	f2fs_dentry_kunmap(old_dir, old_page);
 	f2fs_put_page(old_page, 0);
 out:
 	return err;

fs/f2fs/recovery.c

@@ -129,8 +129,7 @@ static int recover_dentry(struct inode *inode, struct page *ipage)
 	goto out;
 
 out_unmap_put:
-	if (!f2fs_has_inline_dentry(dir))
-		kunmap(page);
+	f2fs_dentry_kunmap(dir, page);
 	f2fs_put_page(page, 0);
 out_err:
 	iput(dir);