tree 19c5725c87122fdd7f2fde484282c829e0d7f779
parent 619ed39242d901339c09faa1b52dad47b0476f6f
author Byongho Lee <bhlee.kernel@gmail.com> 1444799124 +0900
committer David Sterba <dsterba@suse.com> 1445444928 +0200

btrfs: compress: put variables defined per compress type in struct to make cache friendly

Below variables are defined per compress type.
 - struct list_head comp_idle_workspace[BTRFS_COMPRESS_TYPES]
 - spinlock_t comp_workspace_lock[BTRFS_COMPRESS_TYPES]
 - int comp_num_workspace[BTRFS_COMPRESS_TYPES]
 - atomic_t comp_alloc_workspace[BTRFS_COMPRESS_TYPES]
 - wait_queue_head_t comp_workspace_wait[BTRFS_COMPRESS_TYPES]

BTW, while accessing one compress type of these variables, the next or
before address is other compress types of it.
So this patch puts these variables in a struct to make cache friendly.

Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: Byongho Lee <bhlee.kernel@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>