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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/librbd/LibrbdWriteback.h
parentInitial commit. (diff)
downloadceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.tar.xz
ceph-483eb2f56657e8e7f419ab1a4fab8dce9ade8609.zip
Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/librbd/LibrbdWriteback.h')
-rw-r--r--src/librbd/LibrbdWriteback.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/src/librbd/LibrbdWriteback.h b/src/librbd/LibrbdWriteback.h
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+#ifndef CEPH_LIBRBD_LIBRBDWRITEBACKHANDLER_H
+#define CEPH_LIBRBD_LIBRBDWRITEBACKHANDLER_H
+
+#include <queue>
+
+#include "common/snap_types.h"
+#include "osd/osd_types.h"
+#include "osdc/WritebackHandler.h"
+
+class Mutex;
+class Context;
+
+namespace librbd {
+
+ struct ImageCtx;
+
+ class LibrbdWriteback : public WritebackHandler {
+ public:
+ LibrbdWriteback(ImageCtx *ictx, Mutex& lock);
+
+ // Note that oloc, trunc_size, and trunc_seq are ignored
+ void read(const object_t& oid, uint64_t object_no,
+ const object_locator_t& oloc, uint64_t off, uint64_t len,
+ snapid_t snapid, bufferlist *pbl, uint64_t trunc_size,
+ __u32 trunc_seq, int op_flags,
+ const ZTracer::Trace &parent_trace, Context *onfinish) override;
+
+ // Determine whether a read to this extent could be affected by a
+ // write-triggered copy-on-write
+ bool may_copy_on_write(const object_t& oid, uint64_t read_off,
+ uint64_t read_len, snapid_t snapid) override;
+
+ // Note that oloc, trunc_size, and trunc_seq are ignored
+ ceph_tid_t write(const object_t& oid, const object_locator_t& oloc,
+ uint64_t off, uint64_t len,
+ const SnapContext& snapc, const bufferlist &bl,
+ ceph::real_time mtime, uint64_t trunc_size,
+ __u32 trunc_seq, ceph_tid_t journal_tid,
+ const ZTracer::Trace &parent_trace,
+ Context *oncommit) override;
+ using WritebackHandler::write;
+
+ void overwrite_extent(const object_t& oid, uint64_t off,
+ uint64_t len, ceph_tid_t original_journal_tid,
+ ceph_tid_t new_journal_tid) override;
+
+ struct write_result_d {
+ bool done;
+ int ret;
+ std::string oid;
+ Context *oncommit;
+ write_result_d(const std::string& oid, Context *oncommit) :
+ done(false), ret(0), oid(oid), oncommit(oncommit) {}
+ private:
+ write_result_d(const write_result_d& rhs);
+ const write_result_d& operator=(const write_result_d& rhs);
+ };
+
+ private:
+ void complete_writes(const std::string& oid);
+
+ ceph_tid_t m_tid;
+ Mutex& m_lock;
+ librbd::ImageCtx *m_ictx;
+ ceph::unordered_map<std::string, std::queue<write_result_d*> > m_writes;
+ friend class C_OrderedWrite;
+ };
+}
+
+#endif