From 72b64b594081ef0a0717f6aad77e891c72ed4afa Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Wed, 11 Oct 2006 01:21:18 -0700 Subject: [PATCH] ext4 uninline ext4_get_group_no_and_offset() Way too big to inline. Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ext4/balloc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'fs/ext4/balloc.c') diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 3e85886a638..402475a6f3d 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -24,6 +24,24 @@ * balloc.c contains the blocks allocation and deallocation routines */ +/* + * Calculate the block group number and offset, given a block number + */ +void ext4_get_group_no_and_offset(struct super_block *sb, ext4_fsblk_t blocknr, + unsigned long *blockgrpp, ext4_grpblk_t *offsetp) +{ + struct ext4_super_block *es = EXT4_SB(sb)->s_es; + ext4_grpblk_t offset; + + blocknr = blocknr - le32_to_cpu(es->s_first_data_block); + offset = sector_div(blocknr, EXT4_BLOCKS_PER_GROUP(sb)); + if (offsetp) + *offsetp = offset; + if (blockgrpp) + *blockgrpp = blocknr; + +} + /* * The free blocks are managed by bitmaps. A file system contains several * blocks groups. Each group contains 1 bitmap block for blocks, 1 bitmap -- cgit v1.2.3-18-g5258