From eb9e47fc230aafc3ac1e5eeae6d0d8d5e108bbae Mon Sep 17 00:00:00 2001 From: Chengguang Xu Date: Mon, 4 Nov 2019 19:40:32 +0800 Subject: ext2: introduce new helper ext2_group_last_block_no() Introduce new helper ext2_group_last_block_no() to calculate last block num for specific block group, we can replace open coded logic by calling this common helper. Link: https://lore.kernel.org/r/20191104114036.9893-1-cgxu519@mykernel.net Signed-off-by: Chengguang Xu Signed-off-by: Jan Kara --- fs/ext2/ext2.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'fs/ext2') diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h index 10ab238de9a6..8178bd38a9d6 100644 --- a/fs/ext2/ext2.h +++ b/fs/ext2/ext2.h @@ -813,6 +813,18 @@ ext2_group_first_block_no(struct super_block *sb, unsigned long group_no) le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block); } +static inline ext2_fsblk_t +ext2_group_last_block_no(struct super_block *sb, unsigned long group_no) +{ + struct ext2_sb_info *sbi = EXT2_SB(sb); + + if (group_no == sbi->s_groups_count - 1) + return le32_to_cpu(sbi->s_es->s_blocks_count) - 1; + else + return ext2_group_first_block_no(sb, group_no) + + EXT2_BLOCKS_PER_GROUP(sb) - 1; +} + #define ext2_set_bit __test_and_set_bit_le #define ext2_clear_bit __test_and_clear_bit_le #define ext2_test_bit test_bit_le -- cgit v1.2.3