diff options
| author | Kent Overstreet <kmo@daterainc.com> | 2013-10-25 04:19:26 +0400 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-11 09:56:04 +0400 |
| commit | 72a44517f3ca3725dc86081d105457df46448679 (patch) | |
| tree | 247b859af6c4377ab1ea90fd1fd4e64278ccdbbd /drivers/md/bcache/bcache.h | |
| parent | 35fcd848d72683141052aa9880542461577f2dbe (diff) | |
| download | linux-72a44517f3ca3725dc86081d105457df46448679.tar.xz | |
bcache: Convert gc to a kthread
We needed a dedicated rescuer workqueue for gc anyways... and gc was
conceptually a dedicated thread, just one that wasn't running all the
time. Switch it to a dedicated thread to make the code a bit more
straightforward.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Diffstat (limited to 'drivers/md/bcache/bcache.h')
| -rw-r--r-- | drivers/md/bcache/bcache.h | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h index d3520748bc27..09410eb07d82 100644 --- a/drivers/md/bcache/bcache.h +++ b/drivers/md/bcache/bcache.h @@ -773,7 +773,7 @@ struct cache_set { struct gc_stat gc_stats; size_t nbuckets; - struct closure_with_waitlist gc; + struct task_struct *gc_thread; /* Where in the btree gc currently is */ struct bkey gc_done; @@ -786,11 +786,10 @@ struct cache_set { /* Counts how many sectors bio_insert has added to the cache */ atomic_t sectors_to_gc; - struct closure moving_gc; - struct closure_waitlist moving_gc_wait; + wait_queue_head_t moving_gc_wait; struct keybuf moving_gc_keys; /* Number of moving GC bios in flight */ - atomic_t in_flight; + struct semaphore moving_in_flight; struct btree *root; @@ -1176,7 +1175,7 @@ bool bch_cache_set_error(struct cache_set *, const char *, ...); void bch_prio_write(struct cache *); void bch_write_bdev_super(struct cached_dev *, struct closure *); -extern struct workqueue_struct *bcache_wq, *bch_gc_wq; +extern struct workqueue_struct *bcache_wq; extern const char * const bch_cache_modes[]; extern struct mutex bch_register_lock; extern struct list_head bch_cache_sets; |