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authorKent Overstreet <koverstreet@google.com>2013-06-05 06:21:07 -0700
committerKent Overstreet <koverstreet@google.com>2013-06-26 21:57:23 -0700
commit279afbad4e54acbd61bf88a54a73af3bbfdeb5dd (patch)
treeaefebaa3a7f54049904a275ca3035301603a9be1 /drivers/md/bcache/bcache.h
parent444fc0b6b167ed164e7436621a9d095e042644dd (diff)
bcache: Track dirty data by stripe
To make background writeback aware of raid5/6 stripes, we first need to track the amount of dirty data within each stripe - we do this by breaking up the existing sectors_dirty into per stripe atomic_ts Signed-off-by: Kent Overstreet <koverstreet@google.com>
Diffstat (limited to 'drivers/md/bcache/bcache.h')
-rw-r--r--drivers/md/bcache/bcache.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index d099d8894c2f..dbddef0cdb59 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -437,7 +437,10 @@ struct bcache_device {
/* If nonzero, we're detaching/unregistering from cache set */
atomic_t detaching;
- atomic_long_t sectors_dirty;
+ uint64_t nr_stripes;
+ unsigned stripe_size_bits;
+ atomic_t *stripe_sectors_dirty;
+
unsigned long sectors_dirty_last;
long sectors_dirty_derivative;
@@ -1159,9 +1162,6 @@ static inline void wake_up_allocators(struct cache_set *c)
/* Forward declarations */
-void bch_writeback_queue(struct cached_dev *);
-void bch_writeback_add(struct cached_dev *, unsigned);
-
void bch_count_io_errors(struct cache *, int, const char *);
void bch_bbio_count_io_errors(struct cache_set *, struct bio *,
int, const char *);
@@ -1224,8 +1224,6 @@ void bch_cache_set_stop(struct cache_set *);
struct cache_set *bch_cache_set_alloc(struct cache_sb *);
void bch_btree_cache_free(struct cache_set *);
int bch_btree_cache_alloc(struct cache_set *);
-void bch_sectors_dirty_init(struct cached_dev *);
-void bch_cached_dev_writeback_init(struct cached_dev *);
void bch_moving_init_cache_set(struct cache_set *);
int bch_cache_allocator_start(struct cache *ca);