1 files changed, 0 insertions, 122 deletions
diff --git a/libbcache/writeback.h b/libbcache/writeback.h
deleted file mode 100644
index 82ce306e..00000000
--- a/libbcache/writeback.h
+++ /dev/null
@@ -1,122 +0,0 @@
-#ifndef _BCACHE_WRITEBACK_H
-#define _BCACHE_WRITEBACK_H
-
-#include "blockdev.h"
-#include "buckets.h"
-
-#define CUTOFF_WRITEBACK	60
-#define CUTOFF_WRITEBACK_SYNC	30
-
-static inline uint64_t bcache_dev_sectors_dirty(struct bcache_device *d)
-{
-	uint64_t i, ret = 0;
-
-	for (i = 0; i < d->nr_stripes; i++)
-		ret += atomic_read(d->stripe_sectors_dirty + i);
-
-	return ret;
-}
-
-static inline unsigned offset_to_stripe(struct bcache_device *d,
-					uint64_t offset)
-{
-	do_div(offset, d->stripe_size);
-	return offset;
-}
-
-static inline bool bcache_dev_stripe_dirty(struct cached_dev *dc,
-					   uint64_t offset,
-					   unsigned nr_sectors)
-{
-	unsigned stripe = offset_to_stripe(&dc->disk, offset);
-
-	while (1) {
-		if (atomic_read(dc->disk.stripe_sectors_dirty + stripe))
-			return true;
-
-		if (nr_sectors <= dc->disk.stripe_size)
-			return false;
-
-		nr_sectors -= dc->disk.stripe_size;
-		stripe++;
-	}
-}
-
-static inline bool should_writeback(struct cached_dev *dc, struct bio *bio,
-				    unsigned cache_mode, bool would_skip)
-{
-	struct bch_fs *c = dc->disk.c;
-	u64 available = sectors_available(c);
-
-	if (cache_mode != CACHE_MODE_WRITEBACK ||
-	    test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||
-	    available * 100 < c->capacity * CUTOFF_WRITEBACK_SYNC)
-		return false;
-
-	if (dc->partial_stripes_expensive &&
-	    bcache_dev_stripe_dirty(dc, bio->bi_iter.bi_sector,
-				    bio_sectors(bio)))
-		return true;
-
-	if (would_skip)
-		return false;
-
-	return bio->bi_opf & REQ_SYNC ||
-		available * 100 < c->capacity * CUTOFF_WRITEBACK;
-}
-
-static inline void bch_writeback_queue(struct cached_dev *dc)
-{
-	if (!IS_ERR_OR_NULL(dc->writeback_thread))
-		wake_up_process(dc->writeback_thread);
-}
-
-static inline void bch_writeback_add(struct cached_dev *dc)
-{
-	if (!atomic_read(&dc->has_dirty) &&
-	    !atomic_xchg(&dc->has_dirty, 1)) {
-		atomic_inc(&dc->count);
-
-		if (BDEV_STATE(dc->disk_sb.sb) != BDEV_STATE_DIRTY) {
-			SET_BDEV_STATE(dc->disk_sb.sb, BDEV_STATE_DIRTY);
-			/* XXX: should do this synchronously */
-			bch_write_bdev_super(dc, NULL);
-		}
-
-		bch_writeback_queue(dc);
-	}
-}
-
-#ifndef NO_BCACHE_WRITEBACK
-
-void bcache_dev_sectors_dirty_add(struct bch_fs *, unsigned, u64, int);
-
-void bch_writeback_recalc_oldest_gens(struct bch_fs *);
-void bch_sectors_dirty_init(struct cached_dev *, struct bch_fs *c);
-
-void bch_cached_dev_writeback_stop(struct cached_dev *);
-void bch_cached_dev_writeback_free(struct cached_dev *);
-int bch_cached_dev_writeback_init(struct cached_dev *);
-int bch_cached_dev_writeback_start(struct cached_dev *);
-
-#else
-
-static inline void bcache_dev_sectors_dirty_add(struct bch_fs *c,
-						unsigned i, u64 o, int n) {}
-static inline void bch_writeback_recalc_oldest_gens(struct bch_fs *c) {}
-static inline void bch_sectors_dirty_init(struct cached_dev *dc,
-					  struct bch_fs *c) {}
-static inline void bch_cached_dev_writeback_stop(struct cached_dev *dc) {}
-static inline void bch_cached_dev_writeback_free(struct cached_dev *dc) {}
-static inline int bch_cached_dev_writeback_init(struct cached_dev *dc)
-{
-	return 0;
-}
-static inline int bch_cached_dev_writeback_start(struct cached_dev *dc)
-{
-	return 0;
-}
-
-#endif
-
-#endif