forked from mirrors/linux
078b8b90b8
There are two callbacks defined in btrfs_work but only two actually make
use of them, otherwise there are NULLs. We can get rid of the freeing
callback making it a special case of the normal work. This reduces the
size of btrfs_work by 8 bytes, final layout:
struct btrfs_work {
btrfs_func_t func; /* 0 8 */
btrfs_ordered_func_t ordered_func; /* 8 8 */
struct work_struct normal_work; /* 16 32 */
struct list_head ordered_list; /* 48 16 */
/* --- cacheline 1 boundary (64 bytes) --- */
struct btrfs_workqueue * wq; /* 64 8 */
long unsigned int flags; /* 72 8 */
/* size: 80, cachelines: 2, members: 6 */
/* last cacheline: 16 bytes */
};
This in turn reduces size of other structures (on a release config):
- async_chunk 160 -> 152
- async_submit_bio 152 -> 144
- btrfs_async_delayed_work 104 -> 96
- btrfs_caching_control 176 -> 168
- btrfs_delalloc_work 144 -> 136
- btrfs_fs_info 3608 -> 3600
- btrfs_ordered_extent 440 -> 424
- btrfs_writepage_fixup 104 -> 96
Signed-off-by: David Sterba <dsterba@suse.com>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2007 Oracle. All rights reserved.
|
|
* Copyright (C) 2014 Fujitsu. All rights reserved.
|
|
*/
|
|
|
|
#ifndef BTRFS_ASYNC_THREAD_H
|
|
#define BTRFS_ASYNC_THREAD_H
|
|
|
|
#include <linux/workqueue.h>
|
|
|
|
struct btrfs_fs_info;
|
|
struct btrfs_workqueue;
|
|
struct btrfs_work;
|
|
typedef void (*btrfs_func_t)(struct btrfs_work *arg);
|
|
typedef void (*btrfs_ordered_func_t)(struct btrfs_work *arg, bool);
|
|
|
|
struct btrfs_work {
|
|
btrfs_func_t func;
|
|
btrfs_ordered_func_t ordered_func;
|
|
|
|
/* Don't touch things below */
|
|
struct work_struct normal_work;
|
|
struct list_head ordered_list;
|
|
struct btrfs_workqueue *wq;
|
|
unsigned long flags;
|
|
};
|
|
|
|
struct btrfs_workqueue *btrfs_alloc_workqueue(struct btrfs_fs_info *fs_info,
|
|
const char *name,
|
|
unsigned int flags,
|
|
int limit_active,
|
|
int thresh);
|
|
struct btrfs_workqueue *btrfs_alloc_ordered_workqueue(
|
|
struct btrfs_fs_info *fs_info, const char *name,
|
|
unsigned int flags);
|
|
void btrfs_init_work(struct btrfs_work *work, btrfs_func_t func,
|
|
btrfs_ordered_func_t ordered_func);
|
|
void btrfs_queue_work(struct btrfs_workqueue *wq,
|
|
struct btrfs_work *work);
|
|
void btrfs_destroy_workqueue(struct btrfs_workqueue *wq);
|
|
void btrfs_workqueue_set_max(struct btrfs_workqueue *wq, int max);
|
|
struct btrfs_fs_info * __pure btrfs_work_owner(const struct btrfs_work *work);
|
|
struct btrfs_fs_info * __pure btrfs_workqueue_owner(const struct btrfs_workqueue *wq);
|
|
bool btrfs_workqueue_normal_congested(const struct btrfs_workqueue *wq);
|
|
void btrfs_flush_workqueue(struct btrfs_workqueue *wq);
|
|
|
|
#endif
|