1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "librbd/io/ImageDispatch.h"
#include "common/dout.h"
#include "librbd/ImageCtx.h"
#include "librbd/io/AioCompletion.h"
#include "librbd/io/ImageRequest.h"
#include "librbd/io/ObjectDispatcherInterface.h"
#define dout_subsys ceph_subsys_rbd
#undef dout_prefix
#define dout_prefix *_dout << "librbd::io::ImageDispatch: " << this << " " \
<< __func__ << ": "
namespace librbd {
namespace io {
namespace {
void start_in_flight_io(AioCompletion* aio_comp) {
// TODO remove AsyncOperation from AioCompletion
if (!aio_comp->async_op.started()) {
aio_comp->start_op();
}
}
ImageArea get_area(const std::atomic<uint32_t>* image_dispatch_flags) {
return (*image_dispatch_flags & IMAGE_DISPATCH_FLAG_CRYPTO_HEADER ?
ImageArea::CRYPTO_HEADER : ImageArea::DATA);
}
} // anonymous namespace
template <typename I>
void ImageDispatch<I>::shut_down(Context* on_finish) {
on_finish->complete(0);
}
template <typename I>
bool ImageDispatch<I>::read(
AioCompletion* aio_comp, Extents &&image_extents, ReadResult &&read_result,
IOContext io_context, int op_flags, int read_flags,
const ZTracer::Trace &parent_trace, uint64_t tid,
std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
auto area = get_area(image_dispatch_flags);
ldout(cct, 20) << "image_extents=" << image_extents
<< " area=" << area << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageRequest<I>::aio_read(m_image_ctx, aio_comp, std::move(image_extents),
area, std::move(read_result), io_context, op_flags,
read_flags, parent_trace);
return true;
}
template <typename I>
bool ImageDispatch<I>::write(
AioCompletion* aio_comp, Extents &&image_extents, bufferlist &&bl,
int op_flags, const ZTracer::Trace &parent_trace,
uint64_t tid, std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
auto area = get_area(image_dispatch_flags);
ldout(cct, 20) << "image_extents=" << image_extents
<< " area=" << area << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageRequest<I>::aio_write(m_image_ctx, aio_comp, std::move(image_extents),
area, std::move(bl), op_flags, parent_trace);
return true;
}
template <typename I>
bool ImageDispatch<I>::discard(
AioCompletion* aio_comp, Extents &&image_extents,
uint32_t discard_granularity_bytes, const ZTracer::Trace &parent_trace,
uint64_t tid, std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
auto area = get_area(image_dispatch_flags);
ldout(cct, 20) << "image_extents=" << image_extents
<< " area=" << area << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageRequest<I>::aio_discard(m_image_ctx, aio_comp, std::move(image_extents),
area, discard_granularity_bytes, parent_trace);
return true;
}
template <typename I>
bool ImageDispatch<I>::write_same(
AioCompletion* aio_comp, Extents &&image_extents, bufferlist &&bl,
int op_flags, const ZTracer::Trace &parent_trace,
uint64_t tid, std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
auto area = get_area(image_dispatch_flags);
ldout(cct, 20) << "image_extents=" << image_extents
<< " area=" << area << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageRequest<I>::aio_writesame(m_image_ctx, aio_comp,
std::move(image_extents), area, std::move(bl),
op_flags, parent_trace);
return true;
}
template <typename I>
bool ImageDispatch<I>::compare_and_write(
AioCompletion* aio_comp, Extents &&image_extents,
bufferlist &&cmp_bl, bufferlist &&bl, uint64_t *mismatch_offset,
int op_flags, const ZTracer::Trace &parent_trace,
uint64_t tid, std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
auto area = get_area(image_dispatch_flags);
ldout(cct, 20) << "image_extents=" << image_extents
<< " area=" << area << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageRequest<I>::aio_compare_and_write(m_image_ctx, aio_comp,
std::move(image_extents), area,
std::move(cmp_bl), std::move(bl),
mismatch_offset, op_flags,
parent_trace);
return true;
}
template <typename I>
bool ImageDispatch<I>::flush(
AioCompletion* aio_comp, FlushSource flush_source,
const ZTracer::Trace &parent_trace, uint64_t tid,
std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageRequest<I>::aio_flush(m_image_ctx, aio_comp, flush_source, parent_trace);
return true;
}
template <typename I>
bool ImageDispatch<I>::list_snaps(
AioCompletion* aio_comp, Extents&& image_extents, SnapIds&& snap_ids,
int list_snaps_flags, SnapshotDelta* snapshot_delta,
const ZTracer::Trace &parent_trace, uint64_t tid,
std::atomic<uint32_t>* image_dispatch_flags,
DispatchResult* dispatch_result, Context** on_finish,
Context* on_dispatched) {
auto cct = m_image_ctx->cct;
auto area = get_area(image_dispatch_flags);
ldout(cct, 20) << "image_extents=" << image_extents
<< " area=" << area << dendl;
start_in_flight_io(aio_comp);
*dispatch_result = DISPATCH_RESULT_COMPLETE;
ImageListSnapsRequest<I> req(*m_image_ctx, aio_comp, std::move(image_extents),
area, std::move(snap_ids), list_snaps_flags,
snapshot_delta, parent_trace);
req.send();
return true;
}
template <typename I>
bool ImageDispatch<I>::invalidate_cache(Context* on_finish) {
auto cct = m_image_ctx->cct;
ldout(cct, 20) << dendl;
std::shared_lock owner_lock{m_image_ctx->owner_lock};
m_image_ctx->io_object_dispatcher->invalidate_cache(on_finish);
return true;
}
} // namespace io
} // namespace librbd
template class librbd::io::ImageDispatch<librbd::ImageCtx>;
|
