f2fs: fix condition in __allow_reserved_blocks()

[ Upstream commit e75ce11 ]

If reserve_root mount option is not assigned, __allow_reserved_blocks()
will return false, it's not correct, fix it.

Fixes: 7e65be4 ("f2fs: add reserved blocks for root user")
Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
Signed-off-by: Sasha Levin <[email protected]>

Author: chaseyu

fs/f2fs/f2fs.h

@@ -2361,8 +2361,6 @@ static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
 {
 	if (!inode)
 		return true;
-	if (!test_opt(sbi, RESERVE_ROOT))
-		return false;
 	if (IS_NOQUOTA(inode))
 		return true;
 	if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
@@ -2383,7 +2381,7 @@ static inline unsigned int get_available_block_count(struct f2fs_sb_info *sbi,
 	avail_user_block_count = sbi->user_block_count -
 					sbi->current_reserved_blocks;
 
-	if (!__allow_reserved_blocks(sbi, inode, cap))
+	if (test_opt(sbi, RESERVE_ROOT) && !__allow_reserved_blocks(sbi, inode, cap))
 		avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
 
 	if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {