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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include "PassthroughImageCache.h" | |
5 | #include "include/buffer.h" | |
6 | #include "common/dout.h" | |
7 | #include "librbd/ImageCtx.h" | |
8 | ||
9 | #define dout_subsys ceph_subsys_rbd | |
10 | #undef dout_prefix | |
11 | #define dout_prefix *_dout << "librbd::PassthroughImageCache: " << this << " " \ | |
12 | << __func__ << ": " | |
13 | ||
14 | namespace librbd { | |
15 | namespace cache { | |
16 | ||
17 | template <typename I> | |
18 | PassthroughImageCache<I>::PassthroughImageCache(ImageCtx &image_ctx) | |
19 | : m_image_ctx(image_ctx), m_image_writeback(image_ctx) { | |
20 | } | |
21 | ||
22 | template <typename I> | |
23 | void PassthroughImageCache<I>::aio_read(Extents &&image_extents, bufferlist *bl, | |
24 | int fadvise_flags, Context *on_finish) { | |
25 | CephContext *cct = m_image_ctx.cct; | |
26 | ldout(cct, 20) << "image_extents=" << image_extents << ", " | |
27 | << "on_finish=" << on_finish << dendl; | |
28 | ||
29 | m_image_writeback.aio_read(std::move(image_extents), bl, fadvise_flags, | |
30 | on_finish); | |
31 | } | |
32 | ||
33 | template <typename I> | |
34 | void PassthroughImageCache<I>::aio_write(Extents &&image_extents, | |
35 | bufferlist&& bl, | |
36 | int fadvise_flags, | |
37 | Context *on_finish) { | |
38 | CephContext *cct = m_image_ctx.cct; | |
39 | ldout(cct, 20) << "image_extents=" << image_extents << ", " | |
40 | << "on_finish=" << on_finish << dendl; | |
41 | ||
42 | m_image_writeback.aio_write(std::move(image_extents), std::move(bl), | |
43 | fadvise_flags, on_finish); | |
44 | } | |
45 | ||
46 | template <typename I> | |
47 | void PassthroughImageCache<I>::aio_discard(uint64_t offset, uint64_t length, | |
11fdf7f2 TL |
48 | uint32_t discard_granularity_bytes, |
49 | Context *on_finish) { | |
7c673cae FG |
50 | CephContext *cct = m_image_ctx.cct; |
51 | ldout(cct, 20) << "offset=" << offset << ", " | |
52 | << "length=" << length << ", " | |
53 | << "on_finish=" << on_finish << dendl; | |
54 | ||
11fdf7f2 TL |
55 | m_image_writeback.aio_discard(offset, length, discard_granularity_bytes, |
56 | on_finish); | |
7c673cae FG |
57 | } |
58 | ||
59 | template <typename I> | |
60 | void PassthroughImageCache<I>::aio_flush(Context *on_finish) { | |
61 | CephContext *cct = m_image_ctx.cct; | |
62 | ldout(cct, 20) << "on_finish=" << on_finish << dendl; | |
63 | ||
64 | m_image_writeback.aio_flush(on_finish); | |
65 | } | |
66 | ||
67 | template <typename I> | |
68 | void PassthroughImageCache<I>::aio_writesame(uint64_t offset, uint64_t length, | |
69 | bufferlist&& bl, int fadvise_flags, | |
70 | Context *on_finish) { | |
71 | CephContext *cct = m_image_ctx.cct; | |
72 | ldout(cct, 20) << "offset=" << offset << ", " | |
73 | << "length=" << length << ", " | |
74 | << "data_len=" << bl.length() << ", " | |
75 | << "on_finish=" << on_finish << dendl; | |
76 | ||
77 | m_image_writeback.aio_writesame(offset, length, std::move(bl), fadvise_flags, | |
78 | on_finish); | |
79 | } | |
80 | ||
c07f9fc5 FG |
81 | template <typename I> |
82 | void PassthroughImageCache<I>::aio_compare_and_write(Extents &&image_extents, | |
83 | bufferlist&& cmp_bl, | |
84 | bufferlist&& bl, | |
85 | uint64_t *mismatch_offset, | |
86 | int fadvise_flags, | |
87 | Context *on_finish) { | |
88 | CephContext *cct = m_image_ctx.cct; | |
89 | ldout(cct, 20) << "image_extents=" << image_extents << ", " | |
90 | << "on_finish=" << on_finish << dendl; | |
91 | ||
92 | m_image_writeback.aio_compare_and_write( | |
93 | std::move(image_extents), std::move(cmp_bl), std::move(bl), mismatch_offset, | |
94 | fadvise_flags, on_finish); | |
95 | } | |
96 | ||
7c673cae FG |
97 | template <typename I> |
98 | void PassthroughImageCache<I>::init(Context *on_finish) { | |
99 | CephContext *cct = m_image_ctx.cct; | |
100 | ldout(cct, 20) << dendl; | |
101 | ||
102 | on_finish->complete(0); | |
103 | } | |
104 | ||
105 | template <typename I> | |
106 | void PassthroughImageCache<I>::shut_down(Context *on_finish) { | |
107 | CephContext *cct = m_image_ctx.cct; | |
108 | ldout(cct, 20) << dendl; | |
109 | ||
110 | on_finish->complete(0); | |
111 | } | |
112 | ||
113 | template <typename I> | |
114 | void PassthroughImageCache<I>::invalidate(Context *on_finish) { | |
115 | CephContext *cct = m_image_ctx.cct; | |
116 | ldout(cct, 20) << dendl; | |
117 | ||
118 | // dump cache contents (don't have anything) | |
119 | on_finish->complete(0); | |
120 | } | |
121 | ||
122 | template <typename I> | |
123 | void PassthroughImageCache<I>::flush(Context *on_finish) { | |
124 | CephContext *cct = m_image_ctx.cct; | |
125 | ldout(cct, 20) << dendl; | |
126 | ||
127 | // internal flush -- nothing to writeback but make sure | |
128 | // in-flight IO is flushed | |
129 | aio_flush(on_finish); | |
130 | } | |
131 | ||
132 | } // namespace cache | |
133 | } // namespace librbd | |
134 | ||
135 | template class librbd::cache::PassthroughImageCache<librbd::ImageCtx>; |