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3e08773c38
Replace the blk_poll interface that requires the caller to keep a queue and cookie from the submissions with polling based on the bio. Polling for the bio itself leads to a few advantages: - the cookie construction can made entirely private in blk-mq.c - the caller does not need to remember the request_queue and cookie separately and thus sidesteps their lifetime issues - keeping the device and the cookie inside the bio allows to trivially support polling BIOs remapping by stacking drivers - a lot of code to propagate the cookie back up the submission path can be removed entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Mark Wunderlich <mark.wunderlich@intel.com> Link: https://lore.kernel.org/r/20211012111226.760968-15-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
47 lines
1,004 B
C
47 lines
1,004 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHE_REQUEST_H_
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#define _BCACHE_REQUEST_H_
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struct data_insert_op {
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struct closure cl;
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struct cache_set *c;
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struct bio *bio;
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struct workqueue_struct *wq;
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unsigned int inode;
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uint16_t write_point;
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uint16_t write_prio;
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blk_status_t status;
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union {
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uint16_t flags;
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struct {
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unsigned int bypass:1;
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unsigned int writeback:1;
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unsigned int flush_journal:1;
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unsigned int csum:1;
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unsigned int replace:1;
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unsigned int replace_collision:1;
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unsigned int insert_data_done:1;
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};
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};
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struct keylist insert_keys;
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BKEY_PADDED(replace_key);
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};
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unsigned int bch_get_congested(const struct cache_set *c);
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void bch_data_insert(struct closure *cl);
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void bch_cached_dev_request_init(struct cached_dev *dc);
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void cached_dev_submit_bio(struct bio *bio);
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void bch_flash_dev_request_init(struct bcache_device *d);
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void flash_dev_submit_bio(struct bio *bio);
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extern struct kmem_cache *bch_search_cache;
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#endif /* _BCACHE_REQUEST_H_ */
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