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| author | Kent Overstreet <kmo@daterainc.com> | 2013-07-25 04:50:06 +0400 |
|---|---|---|
| committer | Kent Overstreet <kmo@daterainc.com> | 2013-11-11 09:56:05 +0400 |
| commit | 5e6926daac267dd99552ae613f041a9e88bbf258 (patch) | |
| tree | 0d9ebb689cccc61bc3bfca19c48ac83c5591df28 /drivers/md/bcache/bcache.h | |
| parent | 72a44517f3ca3725dc86081d105457df46448679 (diff) | |
| download | linux-5e6926daac267dd99552ae613f041a9e88bbf258.tar.xz | |
bcache: Convert writeback to a kthread
This simplifies the writeback flow control quite a bit - previously, it
was conceptually two coroutines, refill_dirty() and read_dirty(). This
makes the code quite 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 | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h index 09410eb07d82..674e2f42e778 100644 --- a/drivers/md/bcache/bcache.h +++ b/drivers/md/bcache/bcache.h @@ -509,7 +509,7 @@ struct cached_dev { /* Limit number of writeback bios in flight */ struct semaphore in_flight; - struct closure_with_timer writeback; + struct task_struct *writeback_thread; struct keybuf writeback_keys; @@ -1038,7 +1038,11 @@ static inline void bkey_init(struct bkey *k) #define KEY_START(k) (KEY_OFFSET(k) - KEY_SIZE(k)) #define START_KEY(k) KEY(KEY_INODE(k), KEY_START(k), 0) -#define MAX_KEY KEY(~(~0 << 20), ((uint64_t) ~0) >> 1, 0) + +#define MAX_KEY_INODE (~(~0 << 20)) +#define MAX_KEY_OFFSET (((uint64_t) ~0) >> 1) +#define MAX_KEY KEY(MAX_KEY_INODE, MAX_KEY_OFFSET, 0) + #define ZERO_KEY KEY(0, 0, 0) /* @@ -1214,8 +1218,6 @@ int bch_cache_allocator_init(struct cache *ca); void bch_debug_exit(void); int bch_debug_init(struct kobject *); -void bch_writeback_exit(void); -int bch_writeback_init(void); void bch_request_exit(void); int bch_request_init(void); void bch_btree_exit(void); |