1 /* SPDX-License-Identifier: GPL-2.0 */
53 	for (i = 0; i < d->nr_stripes; i++)  in bcache_dev_sectors_dirty()
54 		ret += atomic_read(d->stripe_sectors_dirty + i);  in bcache_dev_sectors_dirty()
62 	do_div(offset, d->stripe_size);  in offset_to_stripe()
64 	/* d->nr_stripes is in range [1, INT_MAX] */  in offset_to_stripe()
65 	if (unlikely(offset >= d->nr_stripes)) {  in offset_to_stripe()
67 			offset, d->nr_stripes);  in offset_to_stripe()
68 		return -EINVAL;  in offset_to_stripe()
78 static inline bool bcache_dev_stripe_dirty(struct cached_dev *dc,  in bcache_dev_stripe_dirty()  argument
82 	int stripe = offset_to_stripe(&dc->disk, offset);  in bcache_dev_stripe_dirty()
88 		if (atomic_read(dc->disk.stripe_sectors_dirty + stripe))  in bcache_dev_stripe_dirty()
91 		if (nr_sectors <= dc->disk.stripe_size)  in bcache_dev_stripe_dirty()
94 		nr_sectors -= dc->disk.stripe_size;  in bcache_dev_stripe_dirty()
102 static inline bool should_writeback(struct cached_dev *dc, struct bio *bio,  in should_writeback()  argument
105 	unsigned int in_use = dc->disk.c->gc_stats.in_use;  in should_writeback()
108 	    test_bit(BCACHE_DEV_DETACHING, &dc->disk.flags) ||  in should_writeback()
115 	if (dc->partial_stripes_expensive &&  in should_writeback()
116 	    bcache_dev_stripe_dirty(dc, bio->bi_iter.bi_sector,  in should_writeback()
123 	return (op_is_sync(bio->bi_opf) ||  in should_writeback()
124 		bio->bi_opf & (REQ_META|REQ_PRIO) ||  in should_writeback()
128 static inline void bch_writeback_queue(struct cached_dev *dc)  in bch_writeback_queue()  argument
130 	if (!IS_ERR_OR_NULL(dc->writeback_thread))  in bch_writeback_queue()
131 		wake_up_process(dc->writeback_thread);  in bch_writeback_queue()
134 static inline void bch_writeback_add(struct cached_dev *dc)  in bch_writeback_add()  argument
136 	if (!atomic_read(&dc->has_dirty) &&  in bch_writeback_add()
137 	    !atomic_xchg(&dc->has_dirty, 1)) {  in bch_writeback_add()
138 		if (BDEV_STATE(&dc->sb) != BDEV_STATE_DIRTY) {  in bch_writeback_add()
139 			SET_BDEV_STATE(&dc->sb, BDEV_STATE_DIRTY);  in bch_writeback_add()
141 			bch_write_bdev_super(dc, NULL);  in bch_writeback_add()
144 		bch_writeback_queue(dc);  in bch_writeback_add()
152 void bch_cached_dev_writeback_init(struct cached_dev *dc);
153 int bch_cached_dev_writeback_start(struct cached_dev *dc);