mirror of
https://github.com/schoebel/mars
synced 2024-12-13 02:05:44 +00:00
67 lines
1.4 KiB
C
67 lines
1.4 KiB
C
// (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG
|
|
#ifndef MARS_BIO_H
|
|
#define MARS_BIO_H
|
|
|
|
#define BIO_SUBMIT_MAX_LATENCY 250 // 250 us
|
|
#define BIO_IO_R_MAX_LATENCY 40000 // 40 ms
|
|
#define BIO_IO_W_MAX_LATENCY 100000 // 100 ms
|
|
|
|
extern struct threshold bio_submit_threshold;
|
|
extern struct threshold bio_io_threshold[2];
|
|
|
|
#include <linux/blkdev.h>
|
|
|
|
struct bio_mref_aspect {
|
|
GENERIC_ASPECT(mref);
|
|
struct list_head io_head;
|
|
struct bio *bio;
|
|
struct bio_output *output;
|
|
unsigned long long start_stamp;
|
|
int status_code;
|
|
int hash_pos;
|
|
int alloc_len;
|
|
bool do_dealloc;
|
|
};
|
|
|
|
struct bio_brick {
|
|
MARS_BRICK(bio);
|
|
// tunables
|
|
int ra_pages;
|
|
int bg_threshold;
|
|
int bg_maxfly;
|
|
bool do_noidle;
|
|
bool do_sync;
|
|
bool do_unplug;
|
|
// readonly
|
|
loff_t total_size;
|
|
atomic_t fly_count[MARS_PRIO_NR];
|
|
atomic_t queue_count[MARS_PRIO_NR];
|
|
atomic_t completed_count;
|
|
atomic_t total_completed_count[MARS_PRIO_NR];
|
|
// private
|
|
spinlock_t lock;
|
|
struct list_head queue_list[MARS_PRIO_NR];
|
|
struct list_head submitted_list[2];
|
|
struct list_head completed_list;
|
|
wait_queue_head_t submit_event;
|
|
wait_queue_head_t response_event;
|
|
struct mapfree_info *mf;
|
|
struct block_device *bdev;
|
|
brick_thread_t *submit_thread;
|
|
brick_thread_t *response_thread;
|
|
int bvec_max;
|
|
bool submitted;
|
|
};
|
|
|
|
struct bio_input {
|
|
MARS_INPUT(bio);
|
|
};
|
|
|
|
struct bio_output {
|
|
MARS_OUTPUT(bio);
|
|
};
|
|
|
|
MARS_TYPES(bio);
|
|
|
|
#endif
|