1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_IO_TYPES_H
3 #define _BCACHEFS_IO_TYPES_H
5 #include "alloc_types.h"
6 #include "btree_types.h"
7 #include "buckets_types.h"
8 #include "extents_types.h"
9 #include "keylist_types.h"
11 #include "super_types.h"
13 #include <linux/llist.h>
14 #include <linux/workqueue.h>
22 * Reads will often have to be split, and if the extent being read from
23 * was checksummed or compressed we'll also have to allocate bounce
24 * buffers and copy the data back into the original bio.
26 * If we didn't have to split, we have to save and restore the original
27 * bi_end_io - @split below indicates which:
30 struct bch_read_bio *parent;
35 * Saved copy of bio->bi_iter, from submission time - allows us to
36 * resubmit on IO error, and also to copy data back to the original bio
37 * when we're bouncing:
39 struct bvec_iter bvec_iter;
41 unsigned offset_into_extent;
58 struct bch_devs_list devs_have;
60 struct extent_ptr_decoded pick;
61 /* start pos of data we read (may not be pos of data we want) */
63 struct bversion version;
65 struct promote_op *promote;
67 struct bch_io_opts opts;
69 struct work_struct work;
74 struct bch_write_bio {
76 struct bch_write_bio *parent;
80 struct bch_devs_list failed;
95 void (*end_io)(struct bch_write_op *);
98 unsigned written; /* sectors */
100 s16 error; /* dio write path expects it to hold -ERESTARTSYS... */
102 unsigned csum_type:4;
103 unsigned compression_type:4;
104 unsigned nr_replicas:4;
105 unsigned nr_replicas_required:4;
106 unsigned alloc_reserve:3;
107 unsigned incompressible:1;
109 struct bch_devs_list devs_have;
112 struct bch_io_opts opts;
115 struct bversion version;
117 /* For BCH_WRITE_DATA_ENCODED: */
118 struct bch_extent_crc_unpacked crc;
120 struct write_point_specifier write_point;
122 struct disk_reservation res;
124 struct open_buckets open_buckets;
127 * If caller wants to flush but hasn't passed us a journal_seq ptr, we
128 * still need to stash the journal_seq somewhere:
137 int (*index_update_fn)(struct bch_write_op *);
139 struct bch_devs_mask failed;
141 struct keylist insert_keys;
142 u64 inline_keys[BKEY_EXTENT_U64s_MAX * 2];
145 struct bch_write_bio wbio;
148 #endif /* _BCACHEFS_IO_TYPES_H */