diff options
Diffstat (limited to 'drivers/md/bcache/backingdev.h')
| -rw-r--r-- | drivers/md/bcache/backingdev.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/drivers/md/bcache/backingdev.h b/drivers/md/bcache/backingdev.h index 58362eb7902a..038b532e91d8 100644 --- a/drivers/md/bcache/backingdev.h +++ b/drivers/md/bcache/backingdev.h @@ -22,7 +22,11 @@ struct bcache_device { struct kobject kobj; struct cache_set *c; - unsigned int id; + struct bch_fs *c2; + + u64 id; + struct inode *inode; + #define BCACHEDEVNAME_SIZE 12 char name[BCACHEDEVNAME_SIZE]; @@ -49,6 +53,11 @@ struct bcache_device { unsigned int cmd, unsigned long arg); }; +static inline bool bcache_dev_is_attached(struct bcache_device *d) +{ + return d->c != NULL || d->c2 != NULL; +} + enum stop_on_failure { BCH_CACHED_DEV_STOP_AUTO = 0, BCH_CACHED_DEV_STOP_ALWAYS, @@ -87,6 +96,9 @@ struct cached_dev { */ atomic_t running; + struct bio_set bch2_bio_read; + mempool_t bch2_io_write; + /* * Writes take a shared lock from start to finish; scanning for dirty * data to refill the rb tree requires an exclusive lock. @@ -225,6 +237,31 @@ static inline bool bcache_dev_stripe_dirty(struct cached_dev *dc, } } +static inline bool should_writeback(struct cached_dev *dc, struct bio *bio, + unsigned int cache_mode, bool would_skip, + unsigned int in_use) +{ + if (cache_mode != CACHE_MODE_WRITEBACK || + test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) || + in_use > bch_cutoff_writeback_sync) + return false; + + if (bio_op(bio) == REQ_OP_DISCARD) + 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 (op_is_sync(bio->bi_opf) || + bio->bi_opf & (REQ_META|REQ_PRIO) || + in_use <= bch_cutoff_writeback); +} + static inline void bch_writeback_queue(struct cached_dev *dc) { if (!IS_ERR_OR_NULL(dc->writeback_thread)) |