mars/mars_bio.h

56 lines
994 B
C

// (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG
#ifndef MARS_BIO_H
#define MARS_BIO_H
#include <linux/blkdev.h>
struct bio_mref_aspect {
GENERIC_ASPECT(mref);
struct list_head io_head;
struct bio *bio;
struct bio_output *output;
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 background_count;
atomic_t completed_count;
atomic_t total_completed_count[MARS_PRIO_NR];
atomic_t total_background_count;
// private
spinlock_t lock;
struct list_head background_list;
struct list_head completed_list;
wait_queue_head_t event;
struct file *filp;
struct block_device *bdev;
struct task_struct *thread;
int bvec_max;
};
struct bio_input {
MARS_INPUT(bio);
};
struct bio_output {
MARS_OUTPUT(bio);
};
MARS_TYPES(bio);
#endif