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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-21 11:54:28 +0000
commite6918187568dbd01842d8d1d2c808ce16a894239 (patch)
tree64f88b554b444a49f656b6c656111a145cbbaa28 /src/mds/locks.c
parentInitial commit. (diff)
downloadceph-e6918187568dbd01842d8d1d2c808ce16a894239.tar.xz
ceph-e6918187568dbd01842d8d1d2c808ce16a894239.zip
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/mds/locks.c')
-rw-r--r--src/mds/locks.c159
1 files changed, 159 insertions, 0 deletions
diff --git a/src/mds/locks.c b/src/mds/locks.c
new file mode 100644
index 000000000..dbe3ab8eb
--- /dev/null
+++ b/src/mds/locks.c
@@ -0,0 +1,159 @@
+#include "include/int_types.h"
+
+#include "locks.h"
+
+/* Duplicated from ceph_fs.h, which we cannot include into a C file. */
+#define CEPH_CAP_GSHARED 1 /* client can reads */
+#define CEPH_CAP_GEXCL 2 /* client can read and update */
+#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
+#define CEPH_CAP_GRD 8 /* (file) client can read */
+#define CEPH_CAP_GWR 16 /* (file) client can write */
+#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
+#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
+#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
+
+static const struct sm_state_t simplelock[LOCK_MAX] = {
+ // stable loner rep state r rp rd wr fwr l x caps,other
+ [LOCK_SYNC] = { 0, false, LOCK_SYNC, ANY, 0, ANY, 0, 0, ANY, 0, CEPH_CAP_GSHARED,0,0,CEPH_CAP_GSHARED },
+ [LOCK_LOCK_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, AUTH, XCL, XCL, 0, 0, XCL, 0, 0,0,0,0 },
+ [LOCK_EXCL_SYNC] = { LOCK_SYNC, true, LOCK_LOCK, 0, 0, 0, 0, XCL, 0, 0, 0,CEPH_CAP_GSHARED,0,0 },
+ [LOCK_SNAP_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, 0, 0, 0, 0, AUTH,0, 0, 0,0,0,0 },
+
+ [LOCK_LOCK] = { 0, false, LOCK_LOCK, AUTH, 0, REQ, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_SYNC_LOCK] = { LOCK_LOCK, false, LOCK_LOCK, ANY, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_EXCL_LOCK] = { LOCK_LOCK, false, LOCK_LOCK, 0, 0, 0, 0, XCL, 0, 0, 0,0,0,0 },
+
+ [LOCK_PREXLOCK] = { LOCK_LOCK, false, LOCK_LOCK, 0, XCL, 0, 0, 0, 0, ANY, 0,0,0,0 },
+ [LOCK_XLOCK] = { LOCK_SYNC, false, LOCK_LOCK, 0, XCL, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_XLOCKDONE] = { LOCK_SYNC, false, LOCK_LOCK, XCL, XCL, XCL, 0, 0, XCL, 0, 0,0,CEPH_CAP_GSHARED,0 },
+ [LOCK_LOCK_XLOCK]= { LOCK_PREXLOCK,false,LOCK_LOCK,0, XCL, 0, 0, 0, 0, XCL, 0,0,0,0 },
+
+ [LOCK_EXCL] = { 0, true, LOCK_LOCK, 0, 0, REQ, XCL, 0, 0, 0, 0,CEPH_CAP_GEXCL|CEPH_CAP_GSHARED,0,0 },
+ [LOCK_SYNC_EXCL] = { LOCK_EXCL, true, LOCK_LOCK, ANY, 0, 0, 0, 0, 0, 0, 0,CEPH_CAP_GSHARED,0,0 },
+ [LOCK_LOCK_EXCL] = { LOCK_EXCL, false, LOCK_LOCK, AUTH, 0, 0, 0, 0, 0, 0, CEPH_CAP_GSHARED,0,0,0 },
+
+ [LOCK_REMOTEXLOCK]={ LOCK_LOCK, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+
+};
+
+const struct sm_t sm_simplelock = {
+ .states = simplelock,
+ .allowed_ever_auth = CEPH_CAP_GSHARED | CEPH_CAP_GEXCL,
+ .allowed_ever_replica = CEPH_CAP_GSHARED,
+ .careful = CEPH_CAP_GSHARED | CEPH_CAP_GEXCL,
+ .can_remote_xlock = 1,
+};
+
+
+// lock state machine states:
+// Sync -- Lock -- sCatter
+// Tempsync _/
+// (out of date)
+
+static const struct sm_state_t scatterlock[LOCK_MAX] = {
+ // stable loner rep state r rp rd wr fwr l x caps,other
+ [LOCK_SYNC] = { 0, false, LOCK_SYNC, ANY, 0, ANY, 0, 0, ANY, 0, CEPH_CAP_GSHARED,0,0,CEPH_CAP_GSHARED },
+ [LOCK_LOCK_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, AUTH, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_MIX_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_SNAP_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, 0, 0, 0, 0, AUTH,0, 0, 0,0,0,0 },
+
+ [LOCK_LOCK] = { 0, false, LOCK_LOCK, AUTH, 0, REQ, AUTH,0, 0, ANY, 0,0,0,0 },
+ [LOCK_SYNC_LOCK] = { LOCK_LOCK, false, LOCK_LOCK, ANY, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_MIX_LOCK] = { LOCK_LOCK, false, LOCK_MIX, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_MIX_LOCK2] = { LOCK_LOCK, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_TSYN_LOCK] = { LOCK_LOCK, false, LOCK_LOCK, AUTH, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+
+ [LOCK_TSYN] = { 0, false, LOCK_LOCK, AUTH, 0, AUTH,0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_LOCK_TSYN] = { LOCK_TSYN, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_MIX_TSYN] = { LOCK_TSYN, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+
+ [LOCK_MIX] = { 0, false, LOCK_MIX, 0, 0, REQ, ANY, 0, 0, 0, 0,0,0,0 },
+ [LOCK_TSYN_MIX] = { LOCK_MIX, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_SYNC_MIX] = { LOCK_MIX, false, LOCK_SYNC_MIX2,ANY,0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_SYNC_MIX2] = { LOCK_MIX, false, 0, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+};
+
+const struct sm_t sm_scatterlock = {
+ .states = scatterlock,
+ .allowed_ever_auth = CEPH_CAP_GSHARED | CEPH_CAP_GEXCL,
+ .allowed_ever_replica = CEPH_CAP_GSHARED,
+ .careful = CEPH_CAP_GSHARED | CEPH_CAP_GEXCL,
+ .can_remote_xlock = 0,
+};
+
+const struct sm_state_t filelock[LOCK_MAX] = {
+ // stable loner rep state r rp rd wr fwr l x caps(any,loner,xlocker,replica)
+ [LOCK_SYNC] = { 0, false, LOCK_SYNC, ANY, 0, ANY, 0, 0, ANY, 0, CEPH_CAP_GSHARED|CEPH_CAP_GCACHE|CEPH_CAP_GRD|CEPH_CAP_GLAZYIO,0,0,CEPH_CAP_GSHARED|CEPH_CAP_GCACHE|CEPH_CAP_GRD },
+ [LOCK_LOCK_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, AUTH, 0, 0, 0, 0, 0, 0, CEPH_CAP_GCACHE,0,0,0 },
+ [LOCK_EXCL_SYNC] = { LOCK_SYNC, true, LOCK_LOCK, 0, 0, 0, 0, XCL, 0, 0, 0,CEPH_CAP_GSHARED|CEPH_CAP_GCACHE|CEPH_CAP_GRD,0,0 },
+ [LOCK_MIX_SYNC] = { LOCK_SYNC, false, LOCK_MIX_SYNC2,0,0, 0, 0, 0, 0, 0, CEPH_CAP_GRD|CEPH_CAP_GLAZYIO,0,0,CEPH_CAP_GRD },
+ [LOCK_MIX_SYNC2] = { LOCK_SYNC, false, 0, 0, 0, 0, 0, 0, 0, 0, CEPH_CAP_GRD|CEPH_CAP_GLAZYIO,0,0,CEPH_CAP_GRD },
+ [LOCK_SNAP_SYNC] = { LOCK_SYNC, false, LOCK_LOCK, 0, 0, 0, 0, AUTH,0, 0, 0,0,0,0 },
+ [LOCK_XSYN_SYNC] = { LOCK_SYNC, true, LOCK_LOCK, AUTH, 0, AUTH,0, 0, 0, 0, 0,CEPH_CAP_GCACHE,0,0 },
+
+ [LOCK_LOCK] = { 0, false, LOCK_LOCK, AUTH, 0, REQ, AUTH,0, 0, 0, CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0,0 },
+ [LOCK_SYNC_LOCK] = { LOCK_LOCK, false, LOCK_LOCK, ANY, 0, REQ, 0, 0, 0, 0, CEPH_CAP_GCACHE,0,0,0 },
+ [LOCK_EXCL_LOCK] = { LOCK_LOCK, false, LOCK_LOCK, 0, 0, 0, 0, XCL, 0, 0, CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0,0 },
+ [LOCK_MIX_LOCK] = { LOCK_LOCK, false, LOCK_MIX, 0, 0, REQ, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_MIX_LOCK2] = { LOCK_LOCK, false, LOCK_LOCK, 0, 0, REQ, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_XSYN_LOCK] = { LOCK_LOCK, true, LOCK_LOCK, AUTH, 0, 0, XCL, 0, 0, 0, 0,CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0 },
+
+ [LOCK_PREXLOCK] = { LOCK_LOCK, false, LOCK_LOCK, 0, XCL, 0, 0, 0, 0, ANY, CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0,0 },
+ [LOCK_XLOCK] = { LOCK_LOCK, false, LOCK_LOCK, 0, XCL, 0, 0, 0, 0, 0, CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0,0 },
+ [LOCK_XLOCKDONE] = { LOCK_LOCK, false, LOCK_LOCK, XCL, XCL, XCL, 0, 0, XCL, 0, CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,CEPH_CAP_GSHARED,0 },
+ [LOCK_XLOCKSNAP] = { LOCK_LOCK, false, LOCK_LOCK, 0, XCL, 0, 0, 0, 0, 0, CEPH_CAP_GCACHE,0,0,0 },
+ [LOCK_LOCK_XLOCK]= { LOCK_PREXLOCK,false,LOCK_LOCK,0, XCL, 0, 0, 0, 0, XCL, CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0,0 },
+
+ [LOCK_MIX] = { 0, false, LOCK_MIX, 0, 0, REQ, ANY, 0, 0, 0, CEPH_CAP_GRD|CEPH_CAP_GWR|CEPH_CAP_GLAZYIO,0,0,CEPH_CAP_GRD },
+ [LOCK_SYNC_MIX] = { LOCK_MIX, false, LOCK_SYNC_MIX2,ANY,0, 0, 0, 0, 0, 0, CEPH_CAP_GRD|CEPH_CAP_GLAZYIO,0,0,CEPH_CAP_GRD },
+ [LOCK_SYNC_MIX2] = { LOCK_MIX, false, 0, 0, 0, 0, 0, 0, 0, 0, CEPH_CAP_GRD|CEPH_CAP_GLAZYIO,0,0,CEPH_CAP_GRD },
+ [LOCK_EXCL_MIX] = { LOCK_MIX, true, LOCK_LOCK, 0, 0, 0, XCL, 0, 0, 0, 0,CEPH_CAP_GRD|CEPH_CAP_GWR,0,0 },
+ [LOCK_XSYN_MIX] = { LOCK_MIX, true, LOCK_LOCK, 0, 0, 0, XCL, 0, 0, 0, 0,0,0,0 },
+
+ [LOCK_EXCL] = { 0, true, LOCK_LOCK, 0, 0, XCL, XCL, 0, 0, 0, 0,CEPH_CAP_GSHARED|CEPH_CAP_GEXCL|CEPH_CAP_GCACHE|CEPH_CAP_GRD|CEPH_CAP_GWR|CEPH_CAP_GBUFFER,0,0 },
+ [LOCK_SYNC_EXCL] = { LOCK_EXCL, true, LOCK_LOCK, ANY, 0, 0, 0, 0, 0, 0, 0,CEPH_CAP_GSHARED|CEPH_CAP_GCACHE|CEPH_CAP_GRD,0,0 },
+ [LOCK_MIX_EXCL] = { LOCK_EXCL, true, LOCK_LOCK, 0, 0, 0, XCL, 0, 0, 0, 0,CEPH_CAP_GRD|CEPH_CAP_GWR,0,0 },
+ [LOCK_LOCK_EXCL] = { LOCK_EXCL, true, LOCK_LOCK, AUTH, 0, 0, 0, 0, 0, 0, 0,CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0 },
+ [LOCK_XSYN_EXCL] = { LOCK_EXCL, true, LOCK_LOCK, AUTH, 0, XCL, 0, 0, 0, 0, 0,CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0 },
+
+ [LOCK_XSYN] = { 0, true, LOCK_LOCK, AUTH, AUTH,AUTH,XCL, 0, 0, 0, 0,CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0 },
+ [LOCK_EXCL_XSYN] = { LOCK_XSYN, false, LOCK_LOCK, 0, 0, XCL, 0, 0, 0, 0, 0,CEPH_CAP_GCACHE|CEPH_CAP_GBUFFER,0,0 },
+
+ [LOCK_PRE_SCAN] = { LOCK_SCAN, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+ [LOCK_SCAN] = { LOCK_LOCK, false, LOCK_LOCK, 0, 0, 0, 0, 0, 0, 0, 0,0,0,0 },
+};
+
+const struct sm_t sm_filelock = {
+ .states = filelock,
+ .allowed_ever_auth = (CEPH_CAP_GSHARED |
+ CEPH_CAP_GEXCL |
+ CEPH_CAP_GCACHE |
+ CEPH_CAP_GRD |
+ CEPH_CAP_GWR |
+ CEPH_CAP_GWREXTEND |
+ CEPH_CAP_GBUFFER |
+ CEPH_CAP_GLAZYIO),
+ .allowed_ever_replica = (CEPH_CAP_GSHARED |
+ CEPH_CAP_GCACHE |
+ CEPH_CAP_GRD |
+ CEPH_CAP_GLAZYIO),
+ .careful = (CEPH_CAP_GSHARED |
+ CEPH_CAP_GEXCL |
+ CEPH_CAP_GCACHE |
+ CEPH_CAP_GBUFFER),
+ .can_remote_xlock = 0,
+};
+
+
+const struct sm_state_t locallock[LOCK_MAX] = {
+ // stable loner rep state r rp rd wr fwr l x caps(any,loner,xlocker,replica)
+ [LOCK_LOCK] = { 0, false, LOCK_LOCK, ANY, 0, ANY, 0, 0, ANY, AUTH,0,0,0,0 },
+};
+
+const struct sm_t sm_locallock = {
+ .states = locallock,
+ .allowed_ever_auth = 0,
+ .allowed_ever_replica = 0,
+ .careful = 0,
+ .can_remote_xlock = 0,
+};