diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-10 14:05:11 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-02-10 14:05:11 -0800 |
commit | 9454473c9dccb7b9d25e5baf915a082bfd490b33 (patch) | |
tree | 46f7f1a8886088e2f0184f1cf0e47c8ac12d4849 /drivers/md/bcache/super.c | |
parent | cc5cb5af3a3363bc6f0530703895bf9c5fa2f159 (diff) | |
parent | 8525e5ff456592effe83640ea1702525e35b0363 (diff) |
Merge tag 'for-linus-20180210' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few fixes to round off the merge window on the block side:
- a set of bcache fixes by way of Michael Lyle, from the usual bcache
suspects.
- add a simple-to-hook-into function for bpf EIO error injection.
- fix blk-wbt that mischarectized flushes as reads. Improve the logic
so that flushes and writes are accounted as writes, and only reads
as reads. From me.
- fix requeue crash in BFQ, from Paolo"
* tag 'for-linus-20180210' of git://git.kernel.dk/linux-block:
block, bfq: add requeue-request hook
bcache: fix for data collapse after re-attaching an attached device
bcache: return attach error when no cache set exist
bcache: set writeback_rate_update_seconds in range [1, 60] seconds
bcache: fix for allocator and register thread race
bcache: set error_limit correctly
bcache: properly set task state in bch_writeback_thread()
bcache: fix high CPU occupancy during journal
bcache: add journal statistic
block: Add should_fail_bio() for bpf error injection
blk-wbt: account flush requests correctly
Diffstat (limited to 'drivers/md/bcache/super.c')
-rw-r--r-- | drivers/md/bcache/super.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 133b81225ea9..312895788036 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -957,7 +957,8 @@ void bch_cached_dev_detach(struct cached_dev *dc) cached_dev_put(dc); } -int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c) +int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c, + uint8_t *set_uuid) { uint32_t rtime = cpu_to_le32(get_seconds()); struct uuid_entry *u; @@ -965,7 +966,8 @@ int bch_cached_dev_attach(struct cached_dev *dc, struct cache_set *c) bdevname(dc->bdev, buf); - if (memcmp(dc->sb.set_uuid, c->sb.set_uuid, 16)) + if ((set_uuid && memcmp(set_uuid, c->sb.set_uuid, 16)) || + (!set_uuid && memcmp(dc->sb.set_uuid, c->sb.set_uuid, 16))) return -ENOENT; if (dc->disk.c) { @@ -1194,7 +1196,7 @@ static void register_bdev(struct cache_sb *sb, struct page *sb_page, list_add(&dc->list, &uncached_devices); list_for_each_entry(c, &bch_cache_sets, list) - bch_cached_dev_attach(dc, c); + bch_cached_dev_attach(dc, c, NULL); if (BDEV_STATE(&dc->sb) == BDEV_STATE_NONE || BDEV_STATE(&dc->sb) == BDEV_STATE_STALE) @@ -1553,7 +1555,7 @@ struct cache_set *bch_cache_set_alloc(struct cache_sb *sb) c->congested_read_threshold_us = 2000; c->congested_write_threshold_us = 20000; - c->error_limit = 8 << IO_ERROR_SHIFT; + c->error_limit = DEFAULT_IO_ERROR_LIMIT; return c; err: @@ -1716,7 +1718,7 @@ static void run_cache_set(struct cache_set *c) bcache_write_super(c); list_for_each_entry_safe(dc, t, &uncached_devices, list) - bch_cached_dev_attach(dc, c); + bch_cached_dev_attach(dc, c, NULL); flash_devs_run(c); @@ -1833,6 +1835,7 @@ void bch_cache_release(struct kobject *kobj) static int cache_alloc(struct cache *ca) { size_t free; + size_t btree_buckets; struct bucket *b; __module_get(THIS_MODULE); @@ -1840,9 +1843,19 @@ static int cache_alloc(struct cache *ca) bio_init(&ca->journal.bio, ca->journal.bio.bi_inline_vecs, 8); + /* + * when ca->sb.njournal_buckets is not zero, journal exists, + * and in bch_journal_replay(), tree node may split, + * so bucket of RESERVE_BTREE type is needed, + * the worst situation is all journal buckets are valid journal, + * and all the keys need to replay, + * so the number of RESERVE_BTREE type buckets should be as much + * as journal buckets + */ + btree_buckets = ca->sb.njournal_buckets ?: 8; free = roundup_pow_of_two(ca->sb.nbuckets) >> 10; - if (!init_fifo(&ca->free[RESERVE_BTREE], 8, GFP_KERNEL) || + if (!init_fifo(&ca->free[RESERVE_BTREE], btree_buckets, GFP_KERNEL) || !init_fifo_exact(&ca->free[RESERVE_PRIO], prio_buckets(ca), GFP_KERNEL) || !init_fifo(&ca->free[RESERVE_MOVINGGC], free, GFP_KERNEL) || !init_fifo(&ca->free[RESERVE_NONE], free, GFP_KERNEL) || |