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git.proxmox.com Git - ceph.git/blob - ceph/src/librbd/cache/ImageWriteback.cc
1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
2 // vim: ts=8 sw=2 smarttab
4 #include "ImageWriteback.h"
5 #include "include/buffer.h"
6 #include "common/dout.h"
7 #include "librbd/ImageCtx.h"
8 #include "librbd/io/AioCompletion.h"
9 #include "librbd/io/ImageRequest.h"
10 #include "librbd/io/ReadResult.h"
12 #define dout_subsys ceph_subsys_rbd
14 #define dout_prefix *_dout << "librbd::ImageWriteback: " << __func__ << ": "
20 ImageWriteback
<I
>::ImageWriteback(I
&image_ctx
) : m_image_ctx(image_ctx
) {
24 void ImageWriteback
<I
>::aio_read(Extents
&&image_extents
, bufferlist
*bl
,
25 int fadvise_flags
, Context
*on_finish
) {
26 CephContext
*cct
= m_image_ctx
.cct
;
27 ldout(cct
, 20) << "image_extents=" << image_extents
<< ", "
28 << "on_finish=" << on_finish
<< dendl
;
30 auto aio_comp
= io::AioCompletion::create_and_start(on_finish
, &m_image_ctx
,
32 io::ImageReadRequest
<I
> req(m_image_ctx
, aio_comp
, std::move(image_extents
),
33 io::ReadResult
{bl
}, fadvise_flags
, {});
34 req
.set_bypass_image_cache();
39 void ImageWriteback
<I
>::aio_write(Extents
&&image_extents
,
40 ceph::bufferlist
&& bl
,
41 int fadvise_flags
, Context
*on_finish
) {
42 CephContext
*cct
= m_image_ctx
.cct
;
43 ldout(cct
, 20) << "image_extents=" << image_extents
<< ", "
44 << "on_finish=" << on_finish
<< dendl
;
46 auto aio_comp
= io::AioCompletion::create_and_start(on_finish
, &m_image_ctx
,
48 io::ImageWriteRequest
<I
> req(m_image_ctx
, aio_comp
, std::move(image_extents
),
49 std::move(bl
), fadvise_flags
, {});
50 req
.set_bypass_image_cache();
55 void ImageWriteback
<I
>::aio_discard(uint64_t offset
, uint64_t length
,
56 bool skip_partial_discard
,
58 CephContext
*cct
= m_image_ctx
.cct
;
59 ldout(cct
, 20) << "offset=" << offset
<< ", "
60 << "length=" << length
<< ", "
61 << "on_finish=" << on_finish
<< dendl
;
63 auto aio_comp
= io::AioCompletion::create_and_start(on_finish
, &m_image_ctx
,
64 io::AIO_TYPE_DISCARD
);
65 io::ImageDiscardRequest
<I
> req(m_image_ctx
, aio_comp
, offset
, length
,
66 skip_partial_discard
, {});
67 req
.set_bypass_image_cache();
72 void ImageWriteback
<I
>::aio_flush(Context
*on_finish
) {
73 CephContext
*cct
= m_image_ctx
.cct
;
74 ldout(cct
, 20) << "on_finish=" << on_finish
<< dendl
;
76 auto aio_comp
= io::AioCompletion::create_and_start(on_finish
, &m_image_ctx
,
78 io::ImageFlushRequest
<I
> req(m_image_ctx
, aio_comp
, {});
79 req
.set_bypass_image_cache();
84 void ImageWriteback
<I
>::aio_writesame(uint64_t offset
, uint64_t length
,
85 ceph::bufferlist
&& bl
,
86 int fadvise_flags
, Context
*on_finish
) {
87 CephContext
*cct
= m_image_ctx
.cct
;
88 ldout(cct
, 20) << "offset=" << offset
<< ", "
89 << "length=" << length
<< ", "
90 << "data_len=" << bl
.length() << ", "
91 << "on_finish=" << on_finish
<< dendl
;
93 auto aio_comp
= io::AioCompletion::create_and_start(on_finish
, &m_image_ctx
,
94 io::AIO_TYPE_WRITESAME
);
95 io::ImageWriteSameRequest
<I
> req(m_image_ctx
, aio_comp
, offset
, length
,
96 std::move(bl
), fadvise_flags
, {});
97 req
.set_bypass_image_cache();
102 } // namespace librbd
104 template class librbd::cache::ImageWriteback
<librbd::ImageCtx
>;