LXR linux/drivers/block/drbd/drbd

   1#ifndef _DRBD_WRAPPERS_H
   2#define _DRBD_WRAPPERS_H
   3
   4#include <linux/ctype.h>
   5#include <linux/mm.h>
   6
   7/* see get_sb_bdev and bd_claim */
   8extern char *drbd_sec_holder;
   9
  10/* sets the number of 512 byte sectors of our virtual device */
  11static inline void drbd_set_my_capacity(struct drbd_conf *mdev,
  12                                        sector_t size)
  13{
  14        /* set_capacity(mdev->this_bdev->bd_disk, size); */
  15        set_capacity(mdev->vdisk, size);
  16        mdev->this_bdev->bd_inode->i_size = (loff_t)size << 9;
  17}
  18
  19#define drbd_bio_uptodate(bio) bio_flagged(bio, BIO_UPTODATE)
  20
  21/* bi_end_io handlers */
  22extern void drbd_md_io_complete(struct bio *bio, int error);
  23extern void drbd_endio_sec(struct bio *bio, int error);
  24extern void drbd_endio_pri(struct bio *bio, int error);
  25
  26/*
  27 * used to submit our private bio
  28 */
  29static inline void drbd_generic_make_request(struct drbd_conf *mdev,
  30                                             int fault_type, struct bio *bio)
  31{
  32        __release(local);
  33        if (!bio->bi_bdev) {
  34                printk(KERN_ERR "drbd%d: drbd_generic_make_request: "
  35                                "bio->bi_bdev == NULL\n",
  36                       mdev_to_minor(mdev));
  37                dump_stack();
  38                bio_endio(bio, -ENODEV);
  39                return;
  40        }
  41
  42        if (FAULT_ACTIVE(mdev, fault_type))
  43                bio_endio(bio, -EIO);
  44        else
  45                generic_make_request(bio);
  46}
  47
  48static inline void drbd_plug_device(struct drbd_conf *mdev)
  49{
  50        struct request_queue *q;
  51        q = bdev_get_queue(mdev->this_bdev);
  52
  53        spin_lock_irq(q->queue_lock);
  54
  55/* XXX the check on !blk_queue_plugged is redundant,
  56 * implicitly checked in blk_plug_device */
  57
  58        if (!blk_queue_plugged(q)) {
  59                blk_plug_device(q);
  60                del_timer(&q->unplug_timer);
  61                /* unplugging should not happen automatically... */
  62        }
  63        spin_unlock_irq(q->queue_lock);
  64}
  65
  66static inline int drbd_crypto_is_hash(struct crypto_tfm *tfm)
  67{
  68        return (crypto_tfm_alg_type(tfm) & CRYPTO_ALG_TYPE_HASH_MASK)
  69                == CRYPTO_ALG_TYPE_HASH;
  70}
  71
  72#ifndef __CHECKER__
  73# undef __cond_lock
  74# define __cond_lock(x,c) (c)
  75#endif
  76
  77#endif
  78