drivers/md/bcache/request.h

   1 #ifndef _BCACHE_REQUEST_H_
   2 #define _BCACHE_REQUEST_H_
   3
   4 #include <linux/cgroup.h>
   5
   6 struct data_insert_op {
   7         struct closure          cl;
   8         struct cache_set        *c;
   9         struct bio              *bio;
  10
  11         unsigned                inode;
  12         uint16_t                write_point;
  13         uint16_t                write_prio;
  14         short                   error;
  15
  16         unsigned                bypass:1;
  17         unsigned                writeback:1;
  18         unsigned                flush_journal:1;
  19         unsigned                csum:1;
  20
  21         unsigned                replace:1;
  22         unsigned                replace_collision:1;
  23
  24         unsigned                insert_data_done:1;
  25
  26         /* Anything past this point won't get zeroed in search_alloc() */
  27         struct keylist          insert_keys;
  28         BKEY_PADDED(replace_key);
  29 };
  30
  31 unsigned bch_get_congested(struct cache_set *);
  32 void bch_data_insert(struct closure *cl);
  33
  34 void bch_cached_dev_request_init(struct cached_dev *dc);
  35 void bch_flash_dev_request_init(struct bcache_device *d);
  36
  37 extern struct kmem_cache *bch_search_cache, *bch_passthrough_cache;
  38
  39 struct bch_cgroup {
  40 #ifdef CONFIG_CGROUP_BCACHE
  41         struct cgroup_subsys_state      css;
  42 #endif
  43         /*
  44          * We subtract one from the index into bch_cache_modes[], so that
  45          * default == -1; this makes it so the rest match up with d->cache_mode,
  46          * and we use d->cache_mode if cgrp->cache_mode < 0
  47          */
  48         short                           cache_mode;
  49         bool                            verify;
  50         struct cache_stat_collector     stats;
  51 };
  52
  53 struct bch_cgroup *bch_bio_to_cgroup(struct bio *bio);
  54
  55 #endif /* _BCACHE_REQUEST_H_ */