diff options
author | Eric Sandeen <sandeen@redhat.com> | 2011-06-28 18:01:31 +0400 |
---|---|---|
committer | Theodore Ts'o <tytso@mit.edu> | 2011-06-28 18:01:31 +0400 |
commit | f86186b44b4164600cce03d0d93ad48ec21fa429 (patch) | |
tree | 48aafabbbe46d22de84e4e9b3ebf7c5b35fd6d1e /fs/ext4/indirect.c | |
parent | dae1e52cb1267bf8f52e5e47a80fab566d7e8aa4 (diff) |
ext4: refactor duplicated block placement code
I found that ext4_ext_find_goal() and ext4_find_near()
share the same code for returning a coloured start block
based on i_block_group.
We can refactor this into a common function so that they
don't diverge in the future.
Thanks to adilger for suggesting the new function name.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/indirect.c')
-rw-r--r-- | fs/ext4/indirect.c | 28 |
1 files changed, 1 insertions, 27 deletions
diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c index c3e85a86e821..6c271115dbb6 100644 --- a/fs/ext4/indirect.c +++ b/fs/ext4/indirect.c @@ -207,11 +207,6 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind) struct ext4_inode_info *ei = EXT4_I(inode); __le32 *start = ind->bh ? (__le32 *) ind->bh->b_data : ei->i_data; __le32 *p; - ext4_fsblk_t bg_start; - ext4_fsblk_t last_block; - ext4_grpblk_t colour; - ext4_group_t block_group; - int flex_size = ext4_flex_bg_size(EXT4_SB(inode->i_sb)); /* Try to find previous block */ for (p = ind->p - 1; p >= start; p--) { @@ -227,28 +222,7 @@ static ext4_fsblk_t ext4_find_near(struct inode *inode, Indirect *ind) * It is going to be referred to from the inode itself? OK, just put it * into the same cylinder group then. */ - block_group = ei->i_block_group; - if (flex_size >= EXT4_FLEX_SIZE_DIR_ALLOC_SCHEME) { - block_group &= ~(flex_size-1); - if (S_ISREG(inode->i_mode)) - block_group++; - } - bg_start = ext4_group_first_block_no(inode->i_sb, block_group); - last_block = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es) - 1; - - /* - * If we are doing delayed allocation, we don't need take - * colour into account. - */ - if (test_opt(inode->i_sb, DELALLOC)) - return bg_start; - - if (bg_start + EXT4_BLOCKS_PER_GROUP(inode->i_sb) <= last_block) - colour = (current->pid % 16) * - (EXT4_BLOCKS_PER_GROUP(inode->i_sb) / 16); - else - colour = (current->pid % 16) * ((last_block - bg_start) / 16); - return bg_start + colour; + return ext4_inode_to_goal_block(inode); } /** |