sysfs.c (46451874c7c9afaa4e014aea0f0970f886444e0d) sysfs.c (6f10f7d1b02b1bbc305f88d7696445dd38b13881)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * bcache sysfs interfaces
4 *
5 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
6 * Copyright 2012 Google, Inc.
7 */
8

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302 strtoul_or_return(buf))
303 bch_cached_dev_run(dc);
304
305 if (attr == &sysfs_cache_mode) {
306 v = __sysfs_match_string(bch_cache_modes, -1, buf);
307 if (v < 0)
308 return v;
309
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * bcache sysfs interfaces
4 *
5 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
6 * Copyright 2012 Google, Inc.
7 */
8

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302 strtoul_or_return(buf))
303 bch_cached_dev_run(dc);
304
305 if (attr == &sysfs_cache_mode) {
306 v = __sysfs_match_string(bch_cache_modes, -1, buf);
307 if (v < 0)
308 return v;
309
310 if ((unsigned) v != BDEV_CACHE_MODE(&dc->sb)) {
310 if ((unsigned int) v != BDEV_CACHE_MODE(&dc->sb)) {
311 SET_BDEV_CACHE_MODE(&dc->sb, v);
312 bch_write_bdev_super(dc, NULL);
313 }
314 }
315
316 if (attr == &sysfs_stop_when_cache_set_failed) {
317 v = __sysfs_match_string(bch_stop_on_failure_modes, -1, buf);
318 if (v < 0)

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528 "floats: %zu\n"
529 "failed: %zu\n",
530 op.nodes,
531 op.stats.sets_written, op.stats.sets_unwritten,
532 op.stats.bytes_written, op.stats.bytes_unwritten,
533 op.stats.floats, op.stats.failed);
534}
535
311 SET_BDEV_CACHE_MODE(&dc->sb, v);
312 bch_write_bdev_super(dc, NULL);
313 }
314 }
315
316 if (attr == &sysfs_stop_when_cache_set_failed) {
317 v = __sysfs_match_string(bch_stop_on_failure_modes, -1, buf);
318 if (v < 0)

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528 "floats: %zu\n"
529 "failed: %zu\n",
530 op.nodes,
531 op.stats.sets_written, op.stats.sets_unwritten,
532 op.stats.bytes_written, op.stats.bytes_unwritten,
533 op.stats.floats, op.stats.failed);
534}
535
536static unsigned bch_root_usage(struct cache_set *c)
536static unsigned int bch_root_usage(struct cache_set *c)
537{
537{
538 unsigned bytes = 0;
538 unsigned int bytes = 0;
539 struct bkey *k;
540 struct btree *b;
541 struct btree_iter iter;
542
543 goto lock_root;
544
545 do {
546 rw_unlock(false, b);

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565 mutex_lock(&c->bucket_lock);
566 list_for_each_entry(b, &c->btree_cache, list)
567 ret += 1 << (b->keys.page_order + PAGE_SHIFT);
568
569 mutex_unlock(&c->bucket_lock);
570 return ret;
571}
572
539 struct bkey *k;
540 struct btree *b;
541 struct btree_iter iter;
542
543 goto lock_root;
544
545 do {
546 rw_unlock(false, b);

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565 mutex_lock(&c->bucket_lock);
566 list_for_each_entry(b, &c->btree_cache, list)
567 ret += 1 << (b->keys.page_order + PAGE_SHIFT);
568
569 mutex_unlock(&c->bucket_lock);
570 return ret;
571}
572
573static unsigned bch_cache_max_chain(struct cache_set *c)
573static unsigned int bch_cache_max_chain(struct cache_set *c)
574{
574{
575 unsigned ret = 0;
575 unsigned int ret = 0;
576 struct hlist_head *h;
577
578 mutex_lock(&c->bucket_lock);
579
580 for (h = c->bucket_hash;
581 h < c->bucket_hash + (1 << BUCKET_HASH_BITS);
582 h++) {
576 struct hlist_head *h;
577
578 mutex_lock(&c->bucket_lock);
579
580 for (h = c->bucket_hash;
581 h < c->bucket_hash + (1 << BUCKET_HASH_BITS);
582 h++) {
583 unsigned i = 0;
583 unsigned int i = 0;
584 struct hlist_node *p;
585
586 hlist_for_each(p, h)
587 i++;
588
589 ret = max(ret, i);
590 }
591
592 mutex_unlock(&c->bucket_lock);
593 return ret;
594}
595
584 struct hlist_node *p;
585
586 hlist_for_each(p, h)
587 i++;
588
589 ret = max(ret, i);
590 }
591
592 mutex_unlock(&c->bucket_lock);
593 return ret;
594}
595
596static unsigned bch_btree_used(struct cache_set *c)
596static unsigned int bch_btree_used(struct cache_set *c)
597{
598 return div64_u64(c->gc_stats.key_bytes * 100,
599 (c->gc_stats.nodes ?: 1) * btree_bytes(c));
600}
601
597{
598 return div64_u64(c->gc_stats.key_bytes * 100,
599 (c->gc_stats.nodes ?: 1) * btree_bytes(c));
600}
601
602static unsigned bch_average_key_size(struct cache_set *c)
602static unsigned int bch_average_key_size(struct cache_set *c)
603{
604 return c->gc_stats.nkeys
605 ? div64_u64(c->gc_stats.data, c->gc_stats.nkeys)
606 : 0;
607}
608
609SHOW(__bch_cache_set)
610{

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991 }
992 }
993
994 if (attr == &sysfs_cache_replacement_policy) {
995 v = __sysfs_match_string(cache_replacement_policies, -1, buf);
996 if (v < 0)
997 return v;
998
603{
604 return c->gc_stats.nkeys
605 ? div64_u64(c->gc_stats.data, c->gc_stats.nkeys)
606 : 0;
607}
608
609SHOW(__bch_cache_set)
610{

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991 }
992 }
993
994 if (attr == &sysfs_cache_replacement_policy) {
995 v = __sysfs_match_string(cache_replacement_policies, -1, buf);
996 if (v < 0)
997 return v;
998
999 if ((unsigned) v != CACHE_REPLACEMENT(&ca->sb)) {
999 if ((unsigned int) v != CACHE_REPLACEMENT(&ca->sb)) {
1000 mutex_lock(&ca->set->bucket_lock);
1001 SET_CACHE_REPLACEMENT(&ca->sb, v);
1002 mutex_unlock(&ca->set->bucket_lock);
1003
1004 bcache_write_super(ca->set);
1005 }
1006 }
1007

--- 27 unchanged lines hidden --- 		1000 mutex_lock(&ca->set->bucket_lock);
1001 SET_CACHE_REPLACEMENT(&ca->sb, v);
1002 mutex_unlock(&ca->set->bucket_lock);
1003
1004 bcache_write_super(ca->set);
1005 }
1006 }
1007

--- 27 unchanged lines hidden ---