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-rw-r--r--fs/ocfs2/dlm/dlmcommon.h296
1 files changed, 204 insertions, 92 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index e90b92f9ece..fae17c640df 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -37,7 +37,7 @@
#define DLM_THREAD_SHUFFLE_INTERVAL 5 // flush everything every 5 passes
#define DLM_THREAD_MS 200 // flush at least every 200 ms
-#define DLM_HASH_SIZE_DEFAULT (1 << 14)
+#define DLM_HASH_SIZE_DEFAULT (1 << 17)
#if DLM_HASH_SIZE_DEFAULT < PAGE_SIZE
# define DLM_HASH_PAGES 1
#else
@@ -49,10 +49,41 @@
/* Intended to make it easier for us to switch out hash functions */
#define dlm_lockid_hash(_n, _l) full_name_hash(_n, _l)
+enum dlm_mle_type {
+ DLM_MLE_BLOCK = 0,
+ DLM_MLE_MASTER = 1,
+ DLM_MLE_MIGRATION = 2,
+ DLM_MLE_NUM_TYPES = 3,
+};
+
+struct dlm_master_list_entry {
+ struct hlist_node master_hash_node;
+ struct list_head hb_events;
+ struct dlm_ctxt *dlm;
+ spinlock_t spinlock;
+ wait_queue_head_t wq;
+ atomic_t woken;
+ struct kref mle_refs;
+ int inuse;
+ unsigned long maybe_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
+ unsigned long vote_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
+ unsigned long response_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
+ unsigned long node_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
+ u8 master;
+ u8 new_master;
+ enum dlm_mle_type type;
+ struct o2hb_callback_func mle_hb_up;
+ struct o2hb_callback_func mle_hb_down;
+ struct dlm_lock_resource *mleres;
+ unsigned char mname[DLM_LOCKID_NAME_MAX];
+ unsigned int mnamelen;
+ unsigned int mnamehash;
+};
+
enum dlm_ast_type {
DLM_AST = 0,
- DLM_BAST,
- DLM_ASTUNLOCK
+ DLM_BAST = 1,
+ DLM_ASTUNLOCK = 2,
};
@@ -77,7 +108,6 @@ static inline int dlm_is_recovery_lock(const char *lock_name, int name_len)
struct dlm_recovery_ctxt
{
struct list_head resources;
- struct list_head received;
struct list_head node_data;
u8 new_master;
u8 dead_node;
@@ -88,9 +118,9 @@ struct dlm_recovery_ctxt
enum dlm_ctxt_state {
DLM_CTXT_NEW = 0,
- DLM_CTXT_JOINED,
- DLM_CTXT_IN_SHUTDOWN,
- DLM_CTXT_LEAVING,
+ DLM_CTXT_JOINED = 1,
+ DLM_CTXT_IN_SHUTDOWN = 2,
+ DLM_CTXT_LEAVING = 3,
};
struct dlm_ctxt
@@ -101,9 +131,11 @@ struct dlm_ctxt
struct list_head purge_list;
struct list_head pending_asts;
struct list_head pending_basts;
+ struct list_head tracking_list;
unsigned int purge_count;
spinlock_t spinlock;
spinlock_t ast_lock;
+ spinlock_t track_lock;
char *name;
u8 node_num;
u32 key;
@@ -111,16 +143,21 @@ struct dlm_ctxt
wait_queue_head_t dlm_join_events;
unsigned long live_nodes_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
unsigned long domain_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
+ unsigned long exit_domain_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
struct dlm_recovery_ctxt reco;
spinlock_t master_lock;
- struct list_head master_list;
+ struct hlist_head **master_hash;
struct list_head mle_hb_events;
/* these give a really vague idea of the system load */
- atomic_t local_resources;
- atomic_t remote_resources;
- atomic_t unknown_resources;
+ atomic_t mle_tot_count[DLM_MLE_NUM_TYPES];
+ atomic_t mle_cur_count[DLM_MLE_NUM_TYPES];
+ atomic_t res_tot_count;
+ atomic_t res_cur_count;
+
+ struct dlm_debug_ctxt *dlm_debug_ctxt;
+ struct dentry *dlm_debugfs_subroot;
/* NOTE: Next three are protected by dlm_domain_lock */
struct kref dlm_refs;
@@ -142,6 +179,12 @@ struct dlm_ctxt
spinlock_t work_lock;
struct list_head dlm_domain_handlers;
struct list_head dlm_eviction_callbacks;
+
+ /* The filesystem specifies this at domain registration. We
+ * cache it here to know what to tell other nodes. */
+ struct dlm_protocol_version fs_locking_proto;
+ /* This is the inter-dlm communication version */
+ struct dlm_protocol_version dlm_locking_proto;
};
static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned i)
@@ -149,6 +192,13 @@ static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned
return dlm->lockres_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] + (i % DLM_BUCKETS_PER_PAGE);
}
+static inline struct hlist_head *dlm_master_hash(struct dlm_ctxt *dlm,
+ unsigned i)
+{
+ return dlm->master_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] +
+ (i % DLM_BUCKETS_PER_PAGE);
+}
+
/* these keventd work queue items are for less-frequently
* called functions that cannot be directly called from the
* net message handlers for some reason, usually because
@@ -170,6 +220,7 @@ struct dlm_mig_lockres_priv
{
struct dlm_lock_resource *lockres;
u8 real_master;
+ u8 extra_ref;
};
struct dlm_assert_master_priv
@@ -263,10 +314,15 @@ struct dlm_lock_resource
struct list_head dirty;
struct list_head recovering; // dlm_recovery_ctxt.resources list
+ /* Added during init and removed during release */
+ struct list_head tracking; /* dlm->tracking_list */
+
/* unused lock resources have their last_used stamped and are
* put on a list for the dlm thread to run. */
unsigned long last_used;
+ struct dlm_ctxt *dlm;
+
unsigned migration_pending:1;
atomic_t asts_reserved;
spinlock_t spinlock;
@@ -275,6 +331,7 @@ struct dlm_lock_resource
u16 state;
char lvb[DLM_LVB_LEN];
unsigned int inflight_locks;
+ unsigned int inflight_assert_workers;
unsigned long refmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
};
@@ -332,8 +389,8 @@ struct dlm_lock
enum dlm_lockres_list {
DLM_GRANTED_LIST = 0,
- DLM_CONVERTING_LIST,
- DLM_BLOCKED_LIST
+ DLM_CONVERTING_LIST = 1,
+ DLM_BLOCKED_LIST = 2,
};
static inline int dlm_lvb_is_empty(char *lvb)
@@ -345,6 +402,18 @@ static inline int dlm_lvb_is_empty(char *lvb)
return 1;
}
+static inline char *dlm_list_in_text(enum dlm_lockres_list idx)
+{
+ if (idx == DLM_GRANTED_LIST)
+ return "granted";
+ else if (idx == DLM_CONVERTING_LIST)
+ return "converting";
+ else if (idx == DLM_BLOCKED_LIST)
+ return "blocked";
+ else
+ return "unknown";
+}
+
static inline struct list_head *
dlm_list_idx_to_ptr(struct dlm_lock_resource *res, enum dlm_lockres_list idx)
{
@@ -371,25 +440,28 @@ struct dlm_node_iter
enum {
- DLM_MASTER_REQUEST_MSG = 500,
- DLM_UNUSED_MSG1, /* 501 */
- DLM_ASSERT_MASTER_MSG, /* 502 */
- DLM_CREATE_LOCK_MSG, /* 503 */
- DLM_CONVERT_LOCK_MSG, /* 504 */
- DLM_PROXY_AST_MSG, /* 505 */
- DLM_UNLOCK_LOCK_MSG, /* 506 */
- DLM_DEREF_LOCKRES_MSG, /* 507 */
- DLM_MIGRATE_REQUEST_MSG, /* 508 */
- DLM_MIG_LOCKRES_MSG, /* 509 */
- DLM_QUERY_JOIN_MSG, /* 510 */
- DLM_ASSERT_JOINED_MSG, /* 511 */
- DLM_CANCEL_JOIN_MSG, /* 512 */
- DLM_EXIT_DOMAIN_MSG, /* 513 */
- DLM_MASTER_REQUERY_MSG, /* 514 */
- DLM_LOCK_REQUEST_MSG, /* 515 */
- DLM_RECO_DATA_DONE_MSG, /* 516 */
- DLM_BEGIN_RECO_MSG, /* 517 */
- DLM_FINALIZE_RECO_MSG /* 518 */
+ DLM_MASTER_REQUEST_MSG = 500,
+ DLM_UNUSED_MSG1 = 501,
+ DLM_ASSERT_MASTER_MSG = 502,
+ DLM_CREATE_LOCK_MSG = 503,
+ DLM_CONVERT_LOCK_MSG = 504,
+ DLM_PROXY_AST_MSG = 505,
+ DLM_UNLOCK_LOCK_MSG = 506,
+ DLM_DEREF_LOCKRES_MSG = 507,
+ DLM_MIGRATE_REQUEST_MSG = 508,
+ DLM_MIG_LOCKRES_MSG = 509,
+ DLM_QUERY_JOIN_MSG = 510,
+ DLM_ASSERT_JOINED_MSG = 511,
+ DLM_CANCEL_JOIN_MSG = 512,
+ DLM_EXIT_DOMAIN_MSG = 513,
+ DLM_MASTER_REQUERY_MSG = 514,
+ DLM_LOCK_REQUEST_MSG = 515,
+ DLM_RECO_DATA_DONE_MSG = 516,
+ DLM_BEGIN_RECO_MSG = 517,
+ DLM_FINALIZE_RECO_MSG = 518,
+ DLM_QUERY_REGION = 519,
+ DLM_QUERY_NODEINFO = 520,
+ DLM_BEGIN_EXIT_DOMAIN_MSG = 521,
};
struct dlm_reco_node_data
@@ -402,19 +474,19 @@ struct dlm_reco_node_data
enum {
DLM_RECO_NODE_DATA_DEAD = -1,
DLM_RECO_NODE_DATA_INIT = 0,
- DLM_RECO_NODE_DATA_REQUESTING,
- DLM_RECO_NODE_DATA_REQUESTED,
- DLM_RECO_NODE_DATA_RECEIVING,
- DLM_RECO_NODE_DATA_DONE,
- DLM_RECO_NODE_DATA_FINALIZE_SENT,
+ DLM_RECO_NODE_DATA_REQUESTING = 1,
+ DLM_RECO_NODE_DATA_REQUESTED = 2,
+ DLM_RECO_NODE_DATA_RECEIVING = 3,
+ DLM_RECO_NODE_DATA_DONE = 4,
+ DLM_RECO_NODE_DATA_FINALIZE_SENT = 5,
};
enum {
DLM_MASTER_RESP_NO = 0,
- DLM_MASTER_RESP_YES,
- DLM_MASTER_RESP_MAYBE,
- DLM_MASTER_RESP_ERROR
+ DLM_MASTER_RESP_YES = 1,
+ DLM_MASTER_RESP_MAYBE = 2,
+ DLM_MASTER_RESP_ERROR = 3,
};
@@ -589,10 +661,26 @@ struct dlm_proxy_ast
#define DLM_PROXY_AST_MAX_LEN (sizeof(struct dlm_proxy_ast)+DLM_LVB_LEN)
#define DLM_MOD_KEY (0x666c6172)
-enum dlm_query_join_response {
+enum dlm_query_join_response_code {
JOIN_DISALLOW = 0,
- JOIN_OK,
- JOIN_OK_NO_MAP,
+ JOIN_OK = 1,
+ JOIN_OK_NO_MAP = 2,
+ JOIN_PROTOCOL_MISMATCH = 3,
+};
+
+struct dlm_query_join_packet {
+ u8 code; /* Response code. dlm_minor and fs_minor
+ are only valid if this is JOIN_OK */
+ u8 dlm_minor; /* The minor version of the protocol the
+ dlm is speaking. */
+ u8 fs_minor; /* The minor version of the protocol the
+ filesystem is speaking. */
+ u8 reserved;
+};
+
+union dlm_query_join_response {
+ __be32 intval;
+ struct dlm_query_join_packet packet;
};
struct dlm_lock_request
@@ -633,6 +721,8 @@ struct dlm_query_join_request
u8 node_idx;
u8 pad1[2];
u8 name_len;
+ struct dlm_protocol_version dlm_proto;
+ struct dlm_protocol_version fs_proto;
u8 domain[O2NM_MAX_NAME_LEN];
u8 node_map[BITS_TO_BYTES(O2NM_MAX_NODES)];
};
@@ -653,6 +743,31 @@ struct dlm_cancel_join
u8 domain[O2NM_MAX_NAME_LEN];
};
+struct dlm_query_region {
+ u8 qr_node;
+ u8 qr_numregions;
+ u8 qr_namelen;
+ u8 pad1;
+ u8 qr_domain[O2NM_MAX_NAME_LEN];
+ u8 qr_regions[O2HB_MAX_REGION_NAME_LEN * O2NM_MAX_REGIONS];
+};
+
+struct dlm_node_info {
+ u8 ni_nodenum;
+ u8 pad1;
+ __be16 ni_ipv4_port;
+ __be32 ni_ipv4_address;
+};
+
+struct dlm_query_nodeinfo {
+ u8 qn_nodenum;
+ u8 qn_numnodes;
+ u8 qn_namelen;
+ u8 pad1;
+ u8 qn_domain[O2NM_MAX_NAME_LEN];
+ struct dlm_node_info qn_nodes[O2NM_MAX_NODES];
+};
+
struct dlm_exit_domain
{
u8 node_idx;
@@ -744,8 +859,8 @@ void dlm_complete_recovery_thread(struct dlm_ctxt *dlm);
void dlm_wait_for_recovery(struct dlm_ctxt *dlm);
void dlm_kick_recovery_thread(struct dlm_ctxt *dlm);
int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node);
-int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout);
-int dlm_wait_for_node_recovery(struct dlm_ctxt *dlm, u8 node, int timeout);
+void dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout);
+void dlm_wait_for_node_recovery(struct dlm_ctxt *dlm, u8 node, int timeout);
void dlm_put(struct dlm_ctxt *dlm);
struct dlm_ctxt *dlm_grab(struct dlm_ctxt *dlm);
@@ -762,9 +877,8 @@ static inline void dlm_lockres_get(struct dlm_lock_resource *res)
kref_get(&res->refs);
}
void dlm_lockres_put(struct dlm_lock_resource *res);
-void __dlm_unhash_lockres(struct dlm_lock_resource *res);
-void __dlm_insert_lockres(struct dlm_ctxt *dlm,
- struct dlm_lock_resource *res);
+void __dlm_unhash_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
+void __dlm_insert_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,
const char *name,
unsigned int len,
@@ -778,9 +892,7 @@ struct dlm_lock_resource * dlm_lookup_lockres(struct dlm_ctxt *dlm,
unsigned int len);
int dlm_is_host_down(int errno);
-void dlm_change_lockres_owner(struct dlm_ctxt *dlm,
- struct dlm_lock_resource *res,
- u8 owner);
+
struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
const char *lockid,
int namelen,
@@ -789,49 +901,23 @@ struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
const char *name,
unsigned int namelen);
-#define dlm_lockres_set_refmap_bit(bit,res) \
- __dlm_lockres_set_refmap_bit(bit,res,__FILE__,__LINE__)
-#define dlm_lockres_clear_refmap_bit(bit,res) \
- __dlm_lockres_clear_refmap_bit(bit,res,__FILE__,__LINE__)
+void dlm_lockres_set_refmap_bit(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res, int bit);
+void dlm_lockres_clear_refmap_bit(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res, int bit);
-static inline void __dlm_lockres_set_refmap_bit(int bit,
- struct dlm_lock_resource *res,
- const char *file,
- int line)
-{
- //printk("%s:%d:%.*s: setting bit %d\n", file, line,
- // res->lockname.len, res->lockname.name, bit);
- set_bit(bit, res->refmap);
-}
+void dlm_lockres_drop_inflight_ref(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res);
+void dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res);
-static inline void __dlm_lockres_clear_refmap_bit(int bit,
- struct dlm_lock_resource *res,
- const char *file,
- int line)
-{
- //printk("%s:%d:%.*s: clearing bit %d\n", file, line,
- // res->lockname.len, res->lockname.name, bit);
- clear_bit(bit, res->refmap);
-}
-
-void __dlm_lockres_drop_inflight_ref(struct dlm_ctxt *dlm,
- struct dlm_lock_resource *res,
- const char *file,
- int line);
-void __dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm,
- struct dlm_lock_resource *res,
- int new_lockres,
- const char *file,
- int line);
-#define dlm_lockres_drop_inflight_ref(d,r) \
- __dlm_lockres_drop_inflight_ref(d,r,__FILE__,__LINE__)
-#define dlm_lockres_grab_inflight_ref(d,r) \
- __dlm_lockres_grab_inflight_ref(d,r,0,__FILE__,__LINE__)
-#define dlm_lockres_grab_inflight_ref_new(d,r) \
- __dlm_lockres_grab_inflight_ref(d,r,1,__FILE__,__LINE__)
+void __dlm_lockres_grab_inflight_worker(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res);
void dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
void dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
+void __dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
+void __dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
void dlm_do_local_ast(struct dlm_ctxt *dlm,
struct dlm_lock_resource *res,
struct dlm_lock *lock);
@@ -938,14 +1024,25 @@ static inline void __dlm_wait_on_lockres(struct dlm_lock_resource *res)
DLM_LOCK_RES_MIGRATING));
}
+void __dlm_unlink_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle);
+void __dlm_insert_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle);
+
+/* create/destroy slab caches */
+int dlm_init_master_caches(void);
+void dlm_destroy_master_caches(void);
+
+int dlm_init_lock_cache(void);
+void dlm_destroy_lock_cache(void);
int dlm_init_mle_cache(void);
void dlm_destroy_mle_cache(void);
+
void dlm_hb_event_notify_attached(struct dlm_ctxt *dlm, int idx, int node_up);
int dlm_drop_lockres_ref(struct dlm_ctxt *dlm,
struct dlm_lock_resource *res);
void dlm_clean_master_list(struct dlm_ctxt *dlm,
u8 dead_node);
+void dlm_force_free_mles(struct dlm_ctxt *dlm);
int dlm_lock_basts_flushed(struct dlm_ctxt *dlm, struct dlm_lock *lock);
int __dlm_lockres_has_locks(struct dlm_lock_resource *res);
int __dlm_lockres_unused(struct dlm_lock_resource *res);
@@ -985,11 +1082,9 @@ static inline int dlm_lock_compatible(int existing, int request)
static inline int dlm_lock_on_list(struct list_head *head,
struct dlm_lock *lock)
{
- struct list_head *iter;
struct dlm_lock *tmplock;
- list_for_each(iter, head) {
- tmplock = list_entry(iter, struct dlm_lock, list);
+ list_for_each_entry(tmplock, head, list) {
if (tmplock == lock)
return 1;
}
@@ -1033,6 +1128,23 @@ static inline int dlm_node_iter_next(struct dlm_node_iter *iter)
return bit;
}
+static inline void dlm_set_lockres_owner(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res,
+ u8 owner)
+{
+ assert_spin_locked(&res->spinlock);
+ res->owner = owner;
+}
+
+static inline void dlm_change_lockres_owner(struct dlm_ctxt *dlm,
+ struct dlm_lock_resource *res,
+ u8 owner)
+{
+ assert_spin_locked(&res->spinlock);
+
+ if (owner != res->owner)
+ dlm_set_lockres_owner(dlm, res, owner);
+}
#endif /* DLMCOMMON_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-18 12:01:35 +0000