bcache: Kill sequential_merge option
It never really made sense to expose this, so just kill it. Signed-off-by: Kent Overstreet <kmo@daterainc.com>
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Родитель
50310164bc
Коммит
8aee122071
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@ -364,7 +364,6 @@ struct cached_dev {
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unsigned sequential_cutoff;
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unsigned readahead;
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unsigned sequential_merge:1;
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unsigned verify:1;
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unsigned partial_stripes_expensive:1;
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@ -510,6 +510,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
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unsigned mode = cache_mode(dc, bio);
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unsigned sectors, congested = bch_get_congested(c);
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struct task_struct *task = current;
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struct io *i;
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if (atomic_read(&dc->disk.detaching) ||
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c->gc_stats.in_use > CUTOFF_CACHE_ADD ||
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@ -536,38 +537,30 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
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(bio->bi_rw & REQ_SYNC))
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goto rescale;
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if (dc->sequential_merge) {
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struct io *i;
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spin_lock(&dc->io_lock);
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spin_lock(&dc->io_lock);
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hlist_for_each_entry(i, iohash(dc, bio->bi_sector), hash)
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if (i->last == bio->bi_sector &&
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time_before(jiffies, i->jiffies))
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goto found;
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hlist_for_each_entry(i, iohash(dc, bio->bi_sector), hash)
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if (i->last == bio->bi_sector &&
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time_before(jiffies, i->jiffies))
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goto found;
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i = list_first_entry(&dc->io_lru, struct io, lru);
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i = list_first_entry(&dc->io_lru, struct io, lru);
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add_sequential(task);
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i->sequential = 0;
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add_sequential(task);
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i->sequential = 0;
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found:
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if (i->sequential + bio->bi_size > i->sequential)
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i->sequential += bio->bi_size;
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if (i->sequential + bio->bi_size > i->sequential)
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i->sequential += bio->bi_size;
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i->last = bio_end_sector(bio);
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i->jiffies = jiffies + msecs_to_jiffies(5000);
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task->sequential_io = i->sequential;
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i->last = bio_end_sector(bio);
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i->jiffies = jiffies + msecs_to_jiffies(5000);
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task->sequential_io = i->sequential;
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hlist_del(&i->hash);
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hlist_add_head(&i->hash, iohash(dc, i->last));
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list_move_tail(&i->lru, &dc->io_lru);
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hlist_del(&i->hash);
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hlist_add_head(&i->hash, iohash(dc, i->last));
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list_move_tail(&i->lru, &dc->io_lru);
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spin_unlock(&dc->io_lock);
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} else {
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task->sequential_io = bio->bi_size;
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add_sequential(task);
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}
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spin_unlock(&dc->io_lock);
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sectors = max(task->sequential_io,
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task->sequential_io_avg) >> 9;
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@ -1079,7 +1079,6 @@ static int cached_dev_init(struct cached_dev *dc, unsigned block_size)
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spin_lock_init(&dc->io_lock);
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bch_cache_accounting_init(&dc->accounting, &dc->disk.cl);
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dc->sequential_merge = true;
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dc->sequential_cutoff = 4 << 20;
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for (io = dc->io; io < dc->io + RECENT_IO; io++) {
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@ -72,7 +72,6 @@ rw_attribute(congested_read_threshold_us);
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rw_attribute(congested_write_threshold_us);
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rw_attribute(sequential_cutoff);
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rw_attribute(sequential_merge);
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rw_attribute(data_csum);
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rw_attribute(cache_mode);
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rw_attribute(writeback_metadata);
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@ -161,7 +160,6 @@ SHOW(__bch_cached_dev)
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sysfs_hprint(stripe_size, dc->disk.stripe_size << 9);
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var_printf(partial_stripes_expensive, "%u");
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var_printf(sequential_merge, "%i");
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var_hprint(sequential_cutoff);
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var_hprint(readahead);
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@ -207,7 +205,6 @@ STORE(__cached_dev)
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dc->writeback_rate_p_term_inverse, 1, INT_MAX);
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d_strtoul(writeback_rate_d_smooth);
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d_strtoul(sequential_merge);
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d_strtoi_h(sequential_cutoff);
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d_strtoi_h(readahead);
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@ -319,7 +316,6 @@ static struct attribute *bch_cached_dev_files[] = {
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&sysfs_stripe_size,
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&sysfs_partial_stripes_expensive,
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&sysfs_sequential_cutoff,
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&sysfs_sequential_merge,
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&sysfs_clear_stats,
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&sysfs_running,
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&sysfs_state,
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