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         union {
  17                 uint16_t        flags;
  18
  19         struct {
  20                 unsigned        bypass:1;
  21                 unsigned        writeback:1;
  22                 unsigned        flush_journal:1;
  23                 unsigned        csum:1;
  24
  25                 unsigned        replace:1;
  26                 unsigned        replace_collision:1;
  27
  28                 unsigned        insert_data_done:1;
  29         };
  30         };
  31
  32         struct keylist          insert_keys;
  33         BKEY_PADDED(replace_key);
  34 };
  35
  36 unsigned bch_get_congested(struct cache_set *);
  37 void bch_data_insert(struct closure *cl);
  38
  39 void bch_cached_dev_request_init(struct cached_dev *dc);
  40 void bch_flash_dev_request_init(struct bcache_device *d);
  41
  42 extern struct kmem_cache *bch_search_cache, *bch_passthrough_cache;
  43
  44 struct bch_cgroup {
  45 #ifdef CONFIG_CGROUP_BCACHE
  46         struct cgroup_subsys_state      css;
  47 #endif
  48         /*
  49          * We subtract one from the index into bch_cache_modes[], so that
  50          * default == -1; this makes it so the rest match up with d->cache_mode,
  51          * and we use d->cache_mode if cgrp->cache_mode < 0
  52          */
  53         short                           cache_mode;
  54         bool                            verify;
  55         struct cache_stat_collector     stats;
  56 };
  57
  58 struct bch_cgroup *bch_bio_to_cgroup(struct bio *bio);
  59
  60 #endif /* _BCACHE_REQUEST_H_ */