f2fs: clean up redundant function call

This patch integrates inode_[inc|dec]_dirty_dents with inc_page_count to remove
redundant calls.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

fs/f2fs/checkpoint.c

@@ -508,7 +508,6 @@ void set_dirty_dir_page(struct inode *inode, struct page *page)
 	if (__add_dirty_inode(inode, new))
 		kmem_cache_free(inode_entry_slab, new);
 
-	inc_page_count(sbi, F2FS_DIRTY_DENTS);
 	inode_inc_dirty_dents(inode);
 	SetPagePrivate(page);
 	spin_unlock(&sbi->dir_inode_lock);

fs/f2fs/data.c

@@ -799,10 +799,7 @@ static int f2fs_write_data_page(struct page *page,
 	 */
 	offset = i_size & (PAGE_CACHE_SIZE - 1);
 	if ((page->index >= end_index + 1) || !offset) {
-		if (S_ISDIR(inode->i_mode)) {
-			dec_page_count(sbi, F2FS_DIRTY_DENTS);
-			inode_dec_dirty_dents(inode);
-		}
+		inode_dec_dirty_dents(inode);
 		goto out;
 	}
 
@@ -815,7 +812,6 @@ static int f2fs_write_data_page(struct page *page,
 
 	/* Dentry blocks are controlled by checkpoint */
 	if (S_ISDIR(inode->i_mode)) {
-		dec_page_count(sbi, F2FS_DIRTY_DENTS);
 		inode_dec_dirty_dents(inode);
 		err = do_write_data_page(page, &fio);
 	} else {
@@ -1033,11 +1029,8 @@ static void f2fs_invalidate_data_page(struct page *page, unsigned int offset,
 				      unsigned int length)
 {
 	struct inode *inode = page->mapping->host;
-	struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
-	if (S_ISDIR(inode->i_mode) && PageDirty(page)) {
-		dec_page_count(sbi, F2FS_DIRTY_DENTS);
+	if (PageDirty(page))
 		inode_dec_dirty_dents(inode);
-	}
 	ClearPagePrivate(page);
 }
 

fs/f2fs/dir.c

@@ -532,7 +532,6 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
 	unsigned int bit_pos;
 	struct address_space *mapping = page->mapping;
 	struct inode *dir = mapping->host;
-	struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
 	int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
 	void *kaddr = page_address(page);
 	int i;
@@ -555,6 +554,8 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
 	dir->i_ctime = dir->i_mtime = CURRENT_TIME;
 
 	if (inode) {
+		struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
+
 		if (S_ISDIR(inode->i_mode)) {
 			drop_nlink(dir);
 			update_inode_page(dir);
@@ -577,7 +578,6 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
 		truncate_hole(dir, page->index, page->index + 1);
 		clear_page_dirty_for_io(page);
 		ClearPageUptodate(page);
-		dec_page_count(sbi, F2FS_DIRTY_DENTS);
 		inode_dec_dirty_dents(dir);
 	}
 	f2fs_put_page(page, 1);

fs/f2fs/f2fs.h

@@ -662,6 +662,7 @@ static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
 
 static inline void inode_inc_dirty_dents(struct inode *inode)
 {
+	inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
 	atomic_inc(&F2FS_I(inode)->dirty_dents);
 }
 
@@ -672,6 +673,10 @@ static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
 
 static inline void inode_dec_dirty_dents(struct inode *inode)
 {
+	if (!S_ISDIR(inode->i_mode))
+		return;
+
+	dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS);
 	atomic_dec(&F2FS_I(inode)->dirty_dents);
 }
 

fs/f2fs/gc.c

@@ -531,15 +531,10 @@ static void move_data_page(struct inode *inode, struct page *page, int gc_type)
 		set_page_dirty(page);
 		set_cold_data(page);
 	} else {
-		struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
-
 		f2fs_wait_on_page_writeback(page, DATA);
 
-		if (clear_page_dirty_for_io(page) &&
-			S_ISDIR(inode->i_mode)) {
-			dec_page_count(sbi, F2FS_DIRTY_DENTS);
+		if (clear_page_dirty_for_io(page))
 			inode_dec_dirty_dents(inode);
-		}
 		set_cold_data(page);
 		do_write_data_page(page, &fio);
 		clear_cold_data(page);