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https://github.com/koverstreet/bcachefs-tools.git
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109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
#ifndef _BCACHEFS_IO_H
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#define _BCACHEFS_IO_H
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#include <linux/hash.h>
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#include "io_types.h"
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#define to_wbio(_bio) \
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container_of((_bio), struct bch_write_bio, bio)
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#define to_rbio(_bio) \
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container_of((_bio), struct bch_read_bio, bio)
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void bch2_bio_free_pages_pool(struct bch_fs *, struct bio *);
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void bch2_bio_alloc_pages_pool(struct bch_fs *, struct bio *, size_t);
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void bch2_submit_wbio_replicas(struct bch_write_bio *, struct bch_fs *,
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enum bch_data_type, const struct bkey_i *);
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enum bch_write_flags {
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BCH_WRITE_ALLOC_NOWAIT = (1 << 0),
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BCH_WRITE_CACHED = (1 << 1),
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BCH_WRITE_FLUSH = (1 << 2),
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BCH_WRITE_DATA_COMPRESSED = (1 << 3),
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BCH_WRITE_THROTTLE = (1 << 4),
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/* Internal: */
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BCH_WRITE_JOURNAL_SEQ_PTR = (1 << 5),
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BCH_WRITE_DONE = (1 << 6),
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BCH_WRITE_LOOPED = (1 << 7),
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};
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static inline u64 *op_journal_seq(struct bch_write_op *op)
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{
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return (op->flags & BCH_WRITE_JOURNAL_SEQ_PTR)
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? op->journal_seq_p : &op->journal_seq;
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}
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static inline struct write_point *foreground_write_point(struct bch_fs *c,
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unsigned long v)
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{
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return c->write_points +
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hash_long(v, ilog2(ARRAY_SIZE(c->write_points)));
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}
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void bch2_write_op_init(struct bch_write_op *, struct bch_fs *,
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struct disk_reservation, struct write_point *,
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struct bpos, u64 *, unsigned);
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void bch2_write(struct closure *);
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static inline struct bch_write_bio *wbio_init(struct bio *bio)
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{
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struct bch_write_bio *wbio = to_wbio(bio);
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memset(wbio, 0, offsetof(struct bch_write_bio, bio));
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return wbio;
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}
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void bch2_wake_delayed_writes(unsigned long data);
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struct bch_devs_mask;
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struct cache_promote_op;
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struct extent_pick_ptr;
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int __bch2_read_extent(struct bch_fs *, struct bch_read_bio *, struct bvec_iter,
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struct bkey_s_c k, struct extent_pick_ptr *, unsigned);
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void __bch2_read(struct bch_fs *, struct bch_read_bio *, struct bvec_iter,
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u64, struct bch_devs_mask *, unsigned);
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enum bch_read_flags {
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BCH_READ_RETRY_IF_STALE = 1 << 0,
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BCH_READ_MAY_PROMOTE = 1 << 1,
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BCH_READ_USER_MAPPED = 1 << 2,
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/* internal: */
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BCH_READ_MUST_BOUNCE = 1 << 3,
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BCH_READ_MUST_CLONE = 1 << 4,
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BCH_READ_IN_RETRY = 1 << 5,
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};
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static inline void bch2_read_extent(struct bch_fs *c,
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struct bch_read_bio *rbio,
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struct bkey_s_c k,
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struct extent_pick_ptr *pick,
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unsigned flags)
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{
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rbio->_state = 0;
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__bch2_read_extent(c, rbio, rbio->bio.bi_iter, k, pick, flags);
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}
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static inline void bch2_read(struct bch_fs *c, struct bch_read_bio *rbio,
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u64 inode)
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{
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rbio->_state = 0;
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__bch2_read(c, rbio, rbio->bio.bi_iter, inode, NULL,
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BCH_READ_RETRY_IF_STALE|
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BCH_READ_MAY_PROMOTE|
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BCH_READ_USER_MAPPED);
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}
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static inline struct bch_read_bio *rbio_init(struct bio *bio)
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{
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struct bch_read_bio *rbio = to_rbio(bio);
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rbio->_state = 0;
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return rbio;
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}
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#endif /* _BCACHEFS_IO_H */
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