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Kent Overstreetcafe5632013-03-23 16:11:31 -07001#ifndef _BCACHE_REQUEST_H_
2#define _BCACHE_REQUEST_H_
3
4#include <linux/cgroup.h>
5
Kent Overstreet220bb382013-09-10 19:02:45 -07006struct data_insert_op {
Kent Overstreetcafe5632013-03-23 16:11:31 -07007 struct closure cl;
Kent Overstreetc18536a2013-07-24 17:44:17 -07008 struct cache_set *c;
Kent Overstreet220bb382013-09-10 19:02:45 -07009 struct bio *bio;
Kent Overstreetcafe5632013-03-23 16:11:31 -070010
Kent Overstreetc18536a2013-07-24 17:44:17 -070011 unsigned inode;
Kent Overstreet2599b532013-07-24 18:11:11 -070012 uint16_t write_point;
Kent Overstreet220bb382013-09-10 19:02:45 -070013 uint16_t write_prio;
14 short error;
Kent Overstreetc18536a2013-07-24 17:44:17 -070015
Kent Overstreetc18536a2013-07-24 17:44:17 -070016 unsigned bypass:1;
Kent Overstreet220bb382013-09-10 19:02:45 -070017 unsigned writeback:1;
Kent Overstreetc18536a2013-07-24 17:44:17 -070018 unsigned flush_journal:1;
Kent Overstreet220bb382013-09-10 19:02:45 -070019 unsigned csum:1;
20
21 unsigned replace:1;
22 unsigned replace_collision:1;
Kent Overstreetc18536a2013-07-24 17:44:17 -070023
24 unsigned insert_data_done:1;
Kent Overstreet0b932072013-07-24 17:26:51 -070025
26 /* Anything past this point won't get zeroed in search_alloc() */
27 struct keylist insert_keys;
Kent Overstreet1b207d82013-09-10 18:52:54 -070028 BKEY_PADDED(replace_key);
Kent Overstreetcafe5632013-03-23 16:11:31 -070029};
30
Kent Overstreetc37511b2013-04-26 15:39:55 -070031unsigned bch_get_congested(struct cache_set *);
Kent Overstreeta34a8bf2013-10-24 17:07:04 -070032void bch_data_insert(struct closure *cl);
Kent Overstreetcafe5632013-03-23 16:11:31 -070033
Kent Overstreetcafe5632013-03-23 16:11:31 -070034void bch_cached_dev_request_init(struct cached_dev *dc);
35void bch_flash_dev_request_init(struct bcache_device *d);
36
37extern struct kmem_cache *bch_search_cache, *bch_passthrough_cache;
38
39struct 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
53struct bch_cgroup *bch_bio_to_cgroup(struct bio *bio);
54
55#endif /* _BCACHE_REQUEST_H_ */