92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
|
#ifndef _DRBD_WRAPPERS_H
|
||
|
|
#define _DRBD_WRAPPERS_H
|
||
|
|
|
||
|
|
#include <linux/ctype.h>
|
||
|
|
#include <linux/mm.h>
|
||
|
|
|
||
|
|
/* see get_sb_bdev and bd_claim */
|
||
|
|
extern char *drbd_sec_holder;
|
||
|
|
|
||
|
|
/* sets the number of 512 byte sectors of our virtual device */
|
||
|
|
static inline void drbd_set_my_capacity(struct drbd_conf *mdev,
|
||
|
|
sector_t size)
|
||
|
|
{
|
||
|
|
/* set_capacity(mdev->this_bdev->bd_disk, size); */
|
||
|
|
set_capacity(mdev->vdisk, size);
|
||
|
|
mdev->this_bdev->bd_inode->i_size = (loff_t)size << 9;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define drbd_bio_uptodate(bio) bio_flagged(bio, BIO_UPTODATE)
|
||
|
|
|
||
|
|
static inline int drbd_bio_has_active_page(struct bio *bio)
|
||
|
|
{
|
||
|
|
struct bio_vec *bvec;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
__bio_for_each_segment(bvec, bio, i, 0) {
|
||
|
|
if (page_count(bvec->bv_page) > 1)
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* bi_end_io handlers */
|
||
|
|
extern void drbd_md_io_complete(struct bio *bio, int error);
|
||
|
|
extern void drbd_endio_read_sec(struct bio *bio, int error);
|
||
|
|
extern void drbd_endio_write_sec(struct bio *bio, int error);
|
||
|
|
extern void drbd_endio_pri(struct bio *bio, int error);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* used to submit our private bio
|
||
|
|
*/
|
||
|
|
static inline void drbd_generic_make_request(struct drbd_conf *mdev,
|
||
|
|
int fault_type, struct bio *bio)
|
||
|
|
{
|
||
|
|
__release(local);
|
||
|
|
if (!bio->bi_bdev) {
|
||
|
|
printk(KERN_ERR "drbd%d: drbd_generic_make_request: "
|
||
|
|
"bio->bi_bdev == NULL\n",
|
||
|
|
mdev_to_minor(mdev));
|
||
|
|
dump_stack();
|
||
|
|
bio_endio(bio, -ENODEV);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (FAULT_ACTIVE(mdev, fault_type))
|
||
|
|
bio_endio(bio, -EIO);
|
||
|
|
else
|
||
|
|
generic_make_request(bio);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void drbd_plug_device(struct drbd_conf *mdev)
|
||
|
|
{
|
||
|
|
struct request_queue *q;
|
||
|
|
q = bdev_get_queue(mdev->this_bdev);
|
||
|
|
|
||
|
|
spin_lock_irq(q->queue_lock);
|
||
|
|
|
||
|
|
/* XXX the check on !blk_queue_plugged is redundant,
|
||
|
|
* implicitly checked in blk_plug_device */
|
||
|
|
|
||
|
|
if (!blk_queue_plugged(q)) {
|
||
|
|
blk_plug_device(q);
|
||
|
|
del_timer(&q->unplug_timer);
|
||
|
|
/* unplugging should not happen automatically... */
|
||
|
|
}
|
||
|
|
spin_unlock_irq(q->queue_lock);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int drbd_crypto_is_hash(struct crypto_tfm *tfm)
|
||
|
|
{
|
||
|
|
return (crypto_tfm_alg_type(tfm) & CRYPTO_ALG_TYPE_HASH_MASK)
|
||
|
|
== CRYPTO_ALG_TYPE_HASH;
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef __CHECKER__
|
||
|
|
# undef __cond_lock
|
||
|
|
# define __cond_lock(x,c) (c)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|