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bcache: Use blkdev_issue_discard()

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The old asynchronous discard code was really a relic from when all the
allocation code was asynchronous - now that allocation runs out of a
dedicated thread there's no point in keeping around all that complicated
machinery.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Kent Overstreet
2013-07-24 17:16:09 -07:00
parent dd9ec84da5
commit 49b1212dfa
3 changed files with 11 additions and 117 deletions
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10
drivers/md/bcache/bcache.h
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@@ -620,15 +620,6 @@ struct cache {
bool discard; /* Get rid of? */
/*
* We preallocate structs for issuing discards to buckets, and keep them
* on this list when they're not in use; do_discard() issues discards
* whenever there's work to do and is called by free_some_buckets() and
* when a discard finishes.
*/
atomic_t discards_in_flight;
struct list_head discards;
struct journal_device journal;
/* The rest of this all shows up in sysfs */
@@ -1222,7 +1213,6 @@ int bch_btree_cache_alloc(struct cache_set *);
void bch_moving_init_cache_set(struct cache_set *);
int bch_cache_allocator_start(struct cache *ca);
void bch_cache_allocator_exit(struct cache *ca);
int bch_cache_allocator_init(struct cache *ca);
void bch_debug_exit(void);