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Merge PR #32432 into master

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* refs/pull/32432/head:
	mds: Reorganize structure members in snap header

Reviewed-by: Patrick Donnelly <pdonnell@redhat.com>
This commit is contained in:
Patrick Donnelly 2020-02-06 19:29:20 -08:00
commit 7173cae78c
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GPG Key ID: 3A2A7E25BEA8AADB
1 changed files with 27 additions and 38 deletions
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65
src/mds/snap.h
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@ -20,23 +20,25 @@
#include "mdstypes.h"
#include "common/snap_types.h"
#include "Capability.h"
/*
* generic snap descriptor.
*/
struct SnapInfo {
snapid_t snapid;
inodeno_t ino;
utime_t stamp;
string name;
mutable string long_name; ///< cached _$ino_$name
void encode(bufferlist &bl) const;
void decode(bufferlist::const_iterator &bl);
void dump(Formatter *f) const;
static void generate_test_instances(std::list<SnapInfo*>& ls);
std::string_view get_long_name() const;
snapid_t snapid;
inodeno_t ino;
utime_t stamp;
string name;
mutable string long_name; ///< cached _$ino_$name
};
WRITE_CLASS_ENCODER(SnapInfo)
@ -48,63 +50,50 @@ inline bool operator==(const SnapInfo &l, const SnapInfo &r)
ostream& operator<<(ostream& out, const SnapInfo &sn);
/*
* SnapRealm - a subtree that shares the same set of snapshots.
*/
struct SnapRealm;
class CInode;
class MDCache;
#include "Capability.h"
struct snaplink_t {
inodeno_t ino;
snapid_t first;
void encode(bufferlist &bl) const;
void decode(bufferlist::const_iterator &bl);
void dump(Formatter *f) const;
static void generate_test_instances(std::list<snaplink_t*>& ls);
inodeno_t ino;
snapid_t first;
};
WRITE_CLASS_ENCODER(snaplink_t)
ostream& operator<<(ostream& out, const snaplink_t &l);
// carry data about a specific version of a SnapRealm
struct sr_t {
snapid_t seq; // basically, a version/seq # for changes to _this_ realm.
snapid_t created; // when this realm was created.
snapid_t last_created; // last snap created in _this_ realm.
snapid_t last_destroyed; // seq for last removal
snapid_t current_parent_since;
map<snapid_t, SnapInfo> snaps;
map<snapid_t, snaplink_t> past_parents; // key is "last" (or NOSNAP)
set<snapid_t> past_parent_snaps;
__u32 flags;
enum {
PARENT_GLOBAL = 1 << 0,
};
void mark_parent_global() { flags |= PARENT_GLOBAL; }
void clear_parent_global() { flags &= ~PARENT_GLOBAL; }
bool is_parent_global() const { return flags & PARENT_GLOBAL; }
sr_t()
: seq(0), created(0),
last_created(0), last_destroyed(0),
current_parent_since(1), flags(0)
{}
void encode(bufferlist &bl) const;
void decode(bufferlist::const_iterator &bl);
void dump(Formatter *f) const;
static void generate_test_instances(std::list<sr_t*>& ls);
snapid_t seq = 0; // basically, a version/seq # for changes to _this_ realm.
snapid_t created = 0; // when this realm was created.
snapid_t last_created = 0; // last snap created in _this_ realm.
snapid_t last_destroyed = 0; // seq for last removal
snapid_t current_parent_since = 1;
map<snapid_t, SnapInfo> snaps;
map<snapid_t, snaplink_t> past_parents; // key is "last" (or NOSNAP)
set<snapid_t> past_parent_snaps;
__u32 flags = 0;
enum {
PARENT_GLOBAL = 1 << 0,
};
};
WRITE_CLASS_ENCODER(sr_t)
class MDCache;
#endif