exfat: remove unused functions

exfat_count_ext_entries() is no longer called, remove it.
exfat_update_dir_chksum() is no longer called, remove it and
rename exfat_update_dir_chksum_with_entry_set() to it.
Signed-off-by: Yuezhang Mo <Yuezhang.Mo@sony.com>
Reviewed-by: Andy Wu <Andy.Wu@sony.com>
Reviewed-by: Aoyama Wataru <wataru.aoyama@sony.com>
Reviewed-by: Sungjong Seo <sj1557.seo@samsung.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>

fs/exfat/dir.c

@@ -478,41 +478,6 @@ void exfat_init_dir_entry(struct exfat_entry_set_cache *es,
 	exfat_init_stream_entry(ep, start_clu, size);
 }
 
-int exfat_update_dir_chksum(struct inode *inode, struct exfat_chain *p_dir,
-		int entry)
-{
-	struct super_block *sb = inode->i_sb;
-	int ret = 0;
-	int i, num_entries;
-	u16 chksum;
-	struct exfat_dentry *ep, *fep;
-	struct buffer_head *fbh, *bh;
-
-	fep = exfat_get_dentry(sb, p_dir, entry, &fbh);
-	if (!fep)
-		return -EIO;
-
-	num_entries = fep->dentry.file.num_ext + 1;
-	chksum = exfat_calc_chksum16(fep, DENTRY_SIZE, 0, CS_DIR_ENTRY);
-
-	for (i = 1; i < num_entries; i++) {
-		ep = exfat_get_dentry(sb, p_dir, entry + i, &bh);
-		if (!ep) {
-			ret = -EIO;
-			goto release_fbh;
-		}
-		chksum = exfat_calc_chksum16(ep, DENTRY_SIZE, chksum,
-				CS_DEFAULT);
-		brelse(bh);
-	}
-
-	fep->dentry.file.checksum = cpu_to_le16(chksum);
-	exfat_update_bh(fbh, IS_DIRSYNC(inode));
-release_fbh:
-	brelse(fbh);
-	return ret;
-}
-
 static void exfat_free_benign_secondary_clusters(struct inode *inode,
 		struct exfat_dentry *ep)
 {
@@ -552,7 +517,7 @@ void exfat_init_ext_entry(struct exfat_entry_set_cache *es, int num_entries,
 		uniname += EXFAT_FILE_NAME_LEN;
 	}
 
-	exfat_update_dir_chksum_with_entry_set(es);
+	exfat_update_dir_chksum(es);
 }
 
 void exfat_remove_entries(struct inode *inode, struct exfat_entry_set_cache *es,
@@ -574,7 +539,7 @@ void exfat_remove_entries(struct inode *inode, struct exfat_entry_set_cache *es,
 		es->modified = true;
 }
 
-void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es)
+void exfat_update_dir_chksum(struct exfat_entry_set_cache *es)
 {
 	int chksum_type = CS_DIR_ENTRY, i;
 	unsigned short chksum = 0;
@@ -1241,27 +1206,6 @@ int exfat_find_dir_entry(struct super_block *sb, struct exfat_inode_info *ei,
 	return dentry - num_ext;
 }
 
-int exfat_count_ext_entries(struct super_block *sb, struct exfat_chain *p_dir,
-		int entry, struct exfat_dentry *ep)
-{
-	int i, count = 0;
-	unsigned int type;
-	struct exfat_dentry *ext_ep;
-	struct buffer_head *bh;
-
-	for (i = 0, entry++; i < ep->dentry.file.num_ext; i++, entry++) {
-		ext_ep = exfat_get_dentry(sb, p_dir, entry, &bh);
-		if (!ext_ep)
-			return -EIO;
-
-		type = exfat_get_entry_type(ext_ep);
-		brelse(bh);
-		if (type & TYPE_CRITICAL_SEC || type & TYPE_BENIGN_SEC)
-			count++;
-	}
-	return count;
-}
-
 int exfat_count_dir_entries(struct super_block *sb, struct exfat_chain *p_dir)
 {
 	int i, count = 0;

fs/exfat/exfat_fs.h

@@ -431,8 +431,6 @@ int exfat_ent_get(struct super_block *sb, unsigned int loc,
 		unsigned int *content);
 int exfat_ent_set(struct super_block *sb, unsigned int loc,
 		unsigned int content);
-int exfat_count_ext_entries(struct super_block *sb, struct exfat_chain *p_dir,
-		int entry, struct exfat_dentry *p_entry);
 int exfat_chain_cont_cluster(struct super_block *sb, unsigned int chain,
 		unsigned int len);
 int exfat_zeroed_cluster(struct inode *dir, unsigned int clu);
@@ -487,9 +485,7 @@ void exfat_init_ext_entry(struct exfat_entry_set_cache *es, int num_entries,
 		struct exfat_uni_name *p_uniname);
 void exfat_remove_entries(struct inode *inode, struct exfat_entry_set_cache *es,
 		int order);
-int exfat_update_dir_chksum(struct inode *inode, struct exfat_chain *p_dir,
-		int entry);
-void exfat_update_dir_chksum_with_entry_set(struct exfat_entry_set_cache *es);
+void exfat_update_dir_chksum(struct exfat_entry_set_cache *es);
 int exfat_calc_num_entries(struct exfat_uni_name *p_uniname);
 int exfat_find_dir_entry(struct super_block *sb, struct exfat_inode_info *ei,
 		struct exfat_chain *p_dir, struct exfat_uni_name *p_uniname,

fs/exfat/inode.c

@@ -94,7 +94,7 @@ int __exfat_write_inode(struct inode *inode, int sync)
 		ep2->dentry.stream.start_clu = EXFAT_FREE_CLUSTER;
 	}
 
-	exfat_update_dir_chksum_with_entry_set(&es);
+	exfat_update_dir_chksum(&es);
 	return exfat_put_dentry_set(&es, sync);
 }