On Tue 23-09-14 11:02:32, Dmitry Monakhov wrote:
> It is reasonable to prepent newly created index to older one.
...
> - newblock = ext4_ext_new_meta_block(handle, inode, NULL,
> - newext, &err, flags);
> + /* Try to prepend new index to old one */
> + if (ext_depth(inode))
> + goal = ext4_idx_pblock(EXT_FIRST_INDEX(ext_inode_hdr(inode)));
> + if (goal > le32_to_cpu(es->s_first_data_block)) {
> + flags |= EXT4_MB_HINT_TRY_GOAL;
> + goal--;
> + } else
> + goal = ext4_inode_to_goal_block(inode);
> + newblock = ext4_new_meta_blocks(handle, inode, goal, flags,
> + NULL, &err);
> if (newblock == 0)
> return err;
Hum, did you actually observe any improvement in file layout with this
patch?
Honza
--
Jan Kara <jack@xxxxxxx>
SUSE Labs, CR
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