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;
63 * pos we read from - different from data_pos for indirect extents:
68 * start pos of data we read (may not be pos of data we want) - for
69 * promote, narrow extents paths:
71 enum btree_id data_btree;
73 struct bversion version;
75 struct promote_op *promote;
77 struct bch_io_opts opts;
79 struct work_struct work;
84 struct bch_write_bio {
86 struct bch_write_bio *parent;
90 struct bch_devs_list failed;
102 struct bch_write_op {
105 void (*end_io)(struct bch_write_op *);
108 unsigned written; /* sectors */
110 s16 error; /* dio write path expects it to hold -ERESTARTSYS... */
112 unsigned csum_type:4;
113 unsigned compression_type:4;
114 unsigned nr_replicas:4;
115 unsigned nr_replicas_required:4;
116 unsigned alloc_reserve:3;
117 unsigned incompressible:1;
119 struct bch_devs_list devs_have;
122 struct bch_io_opts opts;
125 struct bversion version;
127 /* For BCH_WRITE_DATA_ENCODED: */
128 struct bch_extent_crc_unpacked crc;
130 struct write_point_specifier write_point;
132 struct disk_reservation res;
134 struct open_buckets open_buckets;
137 * If caller wants to flush but hasn't passed us a journal_seq ptr, we
138 * still need to stash the journal_seq somewhere:
147 int (*index_update_fn)(struct bch_write_op *);
149 struct bch_devs_mask failed;
151 struct keylist insert_keys;
152 u64 inline_keys[BKEY_EXTENT_U64s_MAX * 2];
155 struct bch_write_bio wbio;
158 #endif /* _BCACHEFS_IO_TYPES_H */