/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * (visit-tags-table FILE)
* vim:expandtab:shiftwidth=8:tabstop=8:
*/
#define _LUSTRE_DLM_H__
#ifdef __KERNEL__
+# include <linux/proc_fs.h>
+#endif
-#include <linux/proc_fs.h>
#include <linux/lustre_lib.h>
#include <linux/lustre_net.h>
#include <linux/lustre_import.h>
+#include <linux/lustre_handles.h>
+#include <linux/lustre_export.h> /* for obd_export, for LDLM_DEBUG */
struct obd_ops;
struct obd_device;
-#define OBD_LDLM_DEVICENAME "ldlm"
+#define LDLM_DEFAULT_LRU_SIZE 100
typedef enum {
ELDLM_OK = 0,
ELDLM_LOCK_CHANGED = 300,
ELDLM_LOCK_ABORTED = 301,
+ ELDLM_LOCK_REPLACED = 302,
+ ELDLM_NO_LOCK_DATA = 303,
ELDLM_NAMESPACE_EXISTS = 400,
ELDLM_BAD_NAMESPACE = 401
#define LDLM_NAMESPACE_SERVER 0
#define LDLM_NAMESPACE_CLIENT 1
-#define LDLM_FL_LOCK_CHANGED (1 << 0)
-#define LDLM_FL_BLOCK_GRANTED (1 << 1)
-#define LDLM_FL_BLOCK_CONV (1 << 2)
-#define LDLM_FL_BLOCK_WAIT (1 << 3)
-#define LDLM_FL_CBPENDING (1 << 4)
-#define LDLM_FL_AST_SENT (1 << 5)
-#define LDLM_FL_DESTROYED (1 << 6)
-#define LDLM_FL_WAIT_NOREPROC (1 << 7)
-
-#define L2B(c) (1 << c)
+#define LDLM_FL_LOCK_CHANGED 0x000001 /* extent, mode, or resource changed */
+
+/* If the server returns one of these flags, then the lock was put on that list.
+ * If the client sends one of these flags (during recovery ONLY!), it wants the
+ * lock added to the specified list, no questions asked. -p */
+#define LDLM_FL_BLOCK_GRANTED 0x000002
+#define LDLM_FL_BLOCK_CONV 0x000004
+#define LDLM_FL_BLOCK_WAIT 0x000008
+
+#define LDLM_FL_CBPENDING 0x000010 /* this lock is being destroyed */
+#define LDLM_FL_AST_SENT 0x000020 /* blocking or cancel packet was sent */
+#define LDLM_FL_WAIT_NOREPROC 0x000040 /* not a real flag, not saved in lock */
+#define LDLM_FL_CANCEL 0x000080 /* cancellation callback already run */
+
+/* Lock is being replayed. This could probably be implied by the fact that one
+ * of BLOCK_{GRANTED,CONV,WAIT} is set, but that is pretty dangerous. */
+#define LDLM_FL_REPLAY 0x000100
+
+#define LDLM_FL_INTENT_ONLY 0x000200 /* don't grant lock, just do intent */
+#define LDLM_FL_LOCAL_ONLY 0x000400 /* see ldlm_cli_cancel_unused */
+
+/* don't run the cancel callback under ldlm_cli_cancel_unused */
+#define LDLM_FL_FAILED 0x000800
+
+#define LDLM_FL_HAS_INTENT 0x001000 /* lock request has intent */
+#define LDLM_FL_CANCELING 0x002000 /* lock cancel has already been sent */
+#define LDLM_FL_LOCAL 0x004000 /* local lock (ie, no srv/cli split) */
+#define LDLM_FL_WARN 0x008000 /* see ldlm_cli_cancel_unused */
+#define LDLM_FL_DISCARD_DATA 0x010000 /* discard (no writeback) on cancel */
+#define LDLM_FL_CONFIG_CHANGE 0x020000 /* see ldlm_cli_cancel_unused */
+
+#define LDLM_FL_NO_TIMEOUT 0x040000 /* Blocked by group lock - wait
+ * indefinitely */
+
+/* file & record locking */
+#define LDLM_FL_BLOCK_NOWAIT 0x080000 /* server told not to wait if blocked */
+#define LDLM_FL_TEST_LOCK 0x100000 /* return blocking lock */
+#define LDLM_FL_GET_BLOCKING 0x200000 /* return updated blocking proc info */
+#define LDLM_FL_DEADLOCK_CHK 0x400000 /* check for deadlock */
+#define LDLM_FL_DEADLOCK_DEL 0x800000 /* lock no longer blocked */
+
+/* These are flags that are mapped into the flags and ASTs of blocking locks */
+#define LDLM_AST_DISCARD_DATA 0x80000000 /* Add FL_DISCARD to blocking ASTs */
+/* Flags sent in AST lock_flags to be mapped into the receiving lock. */
+#define LDLM_AST_FLAGS (LDLM_FL_DISCARD_DATA)
+
+/* XXX FIXME: This is being added to b_size as a low-risk fix to the fact that
+ * the LVB filling happens _after_ the lock has been granted, so another thread
+ * can match before the LVB has been updated. As a dirty hack, we set
+ * LDLM_FL_CAN_MATCH only after we've done the LVB poop.
+ *
+ * The proper fix is to do the granting inside of the completion AST, which can
+ * be replaced with a LVB-aware wrapping function for OSC locks. That change is
+ * pretty high-risk, though, and would need a lot more testing. */
+#define LDLM_FL_CAN_MATCH 0x100000
+
+/* A lock contributes to the kms calculation until it has finished the part
+ * of it's cancelation that performs write back on its dirty pages. It
+ * can remain on the granted list during this whole time. Threads racing
+ * to update the kms after performing their writeback need to know to
+ * exclude each others locks from the calculation as they walk the granted
+ * list. */
+#define LDLM_FL_KMS_IGNORE 0x200000
+
+/* completion ast to be executed */
+#define LDLM_FL_CP_REQD 0x400000
+
+/* cleanup_resource has already handled the lock */
+#define LDLM_FL_CLEANED 0x800000
+
+/* optimization hint: LDLM can run blocking callback from current context
+ * w/o involving separate thread. in order to decrease cs rate */
+#define LDLM_FL_ATOMIC_CB 0x1000000
+
+/* while this flag is set, the lock can't change resource */
+#define LDLM_FL_LOCK_PROTECT 0x4000000
+#define LDLM_FL_LOCK_PROTECT_BIT 26
+
+/* The blocking callback is overloaded to perform two functions. These flags
+ * indicate which operation should be performed. */
+#define LDLM_CB_BLOCKING 1
+#define LDLM_CB_CANCELING 2
/* compatibility matrix */
-#define LCK_COMPAT_EX L2B(LCK_NL)
-#define LCK_COMPAT_PW (LCK_COMPAT_EX | L2B(LCK_CR))
-#define LCK_COMPAT_PR (LCK_COMPAT_PW | L2B(LCK_PR))
-#define LCK_COMPAT_CW (LCK_COMPAT_PW | L2B(LCK_CW))
-#define LCK_COMPAT_CR (LCK_COMPAT_CW | L2B(LCK_PR) | L2B(LCK_PW))
-#define LCK_COMPAT_NL (LCK_COMPAT_CR | L2B(LCK_EX))
+#define LCK_COMPAT_EX LCK_NL
+#define LCK_COMPAT_PW (LCK_COMPAT_EX | LCK_CR)
+#define LCK_COMPAT_PR (LCK_COMPAT_PW | LCK_PR)
+#define LCK_COMPAT_CW (LCK_COMPAT_PW | LCK_CW)
+#define LCK_COMPAT_CR (LCK_COMPAT_CW | LCK_PR | LCK_PW)
+#define LCK_COMPAT_NL (LCK_COMPAT_CR | LCK_EX)
+#define LCK_COMPAT_GROUP (LCK_GROUP | LCK_NL)
static ldlm_mode_t lck_compat_array[] = {
[LCK_EX] LCK_COMPAT_EX,
[LCK_PR] LCK_COMPAT_PR,
[LCK_CW] LCK_COMPAT_CW,
[LCK_CR] LCK_COMPAT_CR,
- [LCK_NL] LCK_COMPAT_NL
+ [LCK_NL] LCK_COMPAT_NL,
+ [LCK_GROUP] LCK_COMPAT_GROUP
};
-static inline int lockmode_compat(ldlm_mode_t exist, ldlm_mode_t new)
+static inline void lockmode_verify(ldlm_mode_t mode)
{
- if (exist < LCK_EX || exist > LCK_NL)
- LBUG();
- if (new < LCK_EX || new > LCK_NL)
- LBUG();
+ LASSERT(mode >= LCK_EX && mode <= LCK_GROUP);
+}
- return (lck_compat_array[exist] & L2B(new));
+static inline int lockmode_compat(ldlm_mode_t exist, ldlm_mode_t new)
+{
+ return (lck_compat_array[exist] & new);
}
-/*
- *
- * cluster name spaces
+/*
+ *
+ * cluster name spaces
*
*/
#define DLM_OST_NAMESPACE 1
#define DLM_MDS_NAMESPACE 2
-/* XXX
- - do we just separate this by security domains and use a prefix for
- multiple namespaces in the same domain?
- -
+/* XXX
+ - do we just separate this by security domains and use a prefix for
+ multiple namespaces in the same domain?
+ -
*/
+/*
+ * Locking rules:
+ *
+ * lr_lock
+ *
+ * lr_lock
+ * waiting_locks_spinlock
+ *
+ * lr_lock
+ * led_lock
+ *
+ * lr_lock
+ * ns_unused_lock
+ *
+ * lr_lvb_sem
+ * lr_lock
+ *
+ */
+
+struct ldlm_lock;
+struct ldlm_resource;
+struct ldlm_namespace;
+
+typedef int (*ldlm_res_policy)(struct ldlm_namespace *, struct ldlm_lock **,
+ void *req_cookie, ldlm_mode_t mode, int flags,
+ void *data);
+
+struct ldlm_valblock_ops {
+ int (*lvbo_init)(struct ldlm_resource *res);
+
+ int (*lvbo_update)(struct ldlm_resource *res,
+ struct lustre_msg *m,
+ int buf_idx, int increase);
+};
+
struct ldlm_namespace {
char *ns_name;
__u32 ns_client; /* is this a client-side lock tree? */
struct list_head *ns_hash; /* hash table for ns */
+ spinlock_t ns_hash_lock;
__u32 ns_refcount; /* count of resources in the hash */
struct list_head ns_root_list; /* all root resources in ns */
- struct lustre_lock ns_lock; /* protects hash, refcount, list */
struct list_head ns_list_chain; /* position in global NS list */
+ /*
struct proc_dir_entry *ns_proc_dir;
+ */
+
+ struct list_head ns_unused_list; /* all root resources in ns */
+ int ns_nr_unused;
+ spinlock_t ns_unused_lock;
+
+ unsigned int ns_max_unused;
+ unsigned long ns_next_dump; /* next dump time */
- spinlock_t ns_counter_lock;
- __u64 ns_locks;
+ atomic_t ns_locks;
__u64 ns_resources;
+ ldlm_res_policy ns_policy;
+ struct ldlm_valblock_ops *ns_lvbo;
+ void *ns_lvbp;
+ wait_queue_head_t ns_waitq;
};
-/*
- *
- * Resource hash table
+/*
+ *
+ * Resource hash table
*
*/
-#define RES_HASH_BITS 14
+#define RES_HASH_BITS 10
#define RES_HASH_SIZE (1UL << RES_HASH_BITS)
#define RES_HASH_MASK (RES_HASH_SIZE - 1)
typedef int (*ldlm_blocking_callback)(struct ldlm_lock *lock,
struct ldlm_lock_desc *new, void *data,
- __u32 data_len);
-
-typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, int flags);
+ int flag);
+typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, int flags,
+ void *data);
+typedef int (*ldlm_glimpse_callback)(struct ldlm_lock *lock, void *data);
struct ldlm_lock {
- __u64 l_random;
- int l_refc;
+ struct portals_handle l_handle; // must be first in the structure
+ atomic_t l_refc;
+
+ /* ldlm_lock_change_resource() can change this */
struct ldlm_resource *l_resource;
+
+ /* set once, no need to protect it */
struct ldlm_lock *l_parent;
+
+ /* protected by ns_hash_lock */
struct list_head l_children;
struct list_head l_childof;
- struct list_head l_res_link; /*position in one of three res lists*/
- struct list_head l_export_chain; /* per-export chain of locks */
- struct list_head l_pending_chain; /* locks with callbacks pending*/
- unsigned long l_callback_timeout;
+ /* protected by ns_hash_lock. FIXME */
+ struct list_head l_lru;
+
+ /* protected by lr_lock */
+ struct list_head l_res_link; // position in one of three res lists
+
+ /* protected by led_lock */
+ struct list_head l_export_chain; // per-export chain of locks
+
+ /* protected by lr_lock */
ldlm_mode_t l_req_mode;
ldlm_mode_t l_granted_mode;
- ldlm_completion_callback l_completion_ast;
- ldlm_blocking_callback l_blocking_ast;
+ ldlm_completion_callback l_completion_ast;
+ ldlm_blocking_callback l_blocking_ast;
+ ldlm_glimpse_callback l_glimpse_ast;
struct obd_export *l_export;
- struct lustre_handle *l_connh;
+ struct obd_export *l_conn_export;
+
+ /* protected by lr_lock */
__u32 l_flags;
- struct lustre_handle l_remote_handle;
- void *l_data;
- __u32 l_data_len;
- void *l_cookie;
- int l_cookie_len;
- struct ldlm_extent l_extent;
- __u32 l_version[RES_VERSION_SIZE];
+ struct lustre_handle l_remote_handle;
+ ldlm_policy_data_t l_policy_data;
+
+ /* protected by lr_lock */
__u32 l_readers;
__u32 l_writers;
+ __u8 l_destroyed;
/* If the lock is granted, a process sleeps on this waitq to learn when
* it's no longer in use. If the lock is not granted, a process sleeps
* on this waitq to learn when it becomes granted. */
wait_queue_head_t l_waitq;
-};
+ struct timeval l_enqueued_time;
+
+ unsigned long l_last_used; /* jiffies */
+ struct ldlm_extent l_req_extent;
+
+ /* Client-side-only members */
+ __u32 l_lvb_len; /* temporary storage for */
+ void *l_lvb_data; /* an LVB received during */
+ void *l_lvb_swabber; /* an enqueue */
+ void *l_ast_data;
+
+ /* Server-side-only members */
+
+ /* protected by elt_lock */
+ struct list_head l_pending_chain; /* callbacks pending */
+ unsigned long l_callback_timeout;
-typedef int (*ldlm_res_compat)(struct ldlm_lock *child, struct ldlm_lock *new);
-typedef int (*ldlm_res_policy)(struct ldlm_lock *lock, void *req_cookie,
- ldlm_mode_t mode, void *data);
+ __u32 l_pid; /* pid which created this lock */
+ __u32 l_pidb; /* who holds LOCK_PROTECT_BIT */
+
+ struct list_head l_tmp;
+
+ /* for ldlm_add_ast_work_item() */
+ struct list_head l_bl_ast;
+ struct list_head l_cp_ast;
+ struct ldlm_lock *l_blocking_lock;
+ int l_bl_ast_run;
+};
#define LDLM_PLAIN 10
#define LDLM_EXTENT 11
-#define LDLM_MDSINTENT 12
+#define LDLM_FLOCK 12
+#define LDLM_IBITS 13
#define LDLM_MIN_TYPE 10
-#define LDLM_MAX_TYPE 12
-
-extern ldlm_res_compat ldlm_res_compat_table [];
-extern ldlm_res_policy ldlm_res_policy_table [];
+#define LDLM_MAX_TYPE 14
struct ldlm_resource {
struct ldlm_namespace *lr_namespace;
+
+ /* protected by ns_hash_lock */
struct list_head lr_hash;
struct ldlm_resource *lr_parent; /* 0 for a root resource */
struct list_head lr_children; /* list head for child resources */
struct list_head lr_childof; /* part of ns_root_list if root res,
* part of lr_children if child */
+ spinlock_t lr_lock;
+ /* protected by lr_lock */
struct list_head lr_granted;
struct list_head lr_converting;
struct list_head lr_waiting;
ldlm_mode_t lr_most_restr;
- __u32 lr_type; /* PLAIN, EXTENT, or MDSINTENT */
- struct ldlm_resource *lr_root;
- __u64 lr_name[RES_NAME_SIZE];
- __u32 lr_version[RES_VERSION_SIZE];
+ __u32 lr_type; /* LDLM_PLAIN or LDLM_EXTENT */
+ struct ldlm_res_id lr_name;
atomic_t lr_refcount;
+
+ /* Server-side-only lock value block elements */
+ struct semaphore lr_lvb_sem;
+ __u32 lr_lvb_len;
+ void *lr_lvb_data;
+
+ /* lr_tmp holds a list head temporarily, during the building of a work
+ * queue. see ldlm_add_ast_work_item and ldlm_run_ast_work */
void *lr_tmp;
};
-struct ldlm_ast_work {
+struct ldlm_ast_work {
struct ldlm_lock *w_lock;
int w_blocking;
struct ldlm_lock_desc w_desc;
int w_datalen;
};
-/* Per-export ldlm state. */
-struct ldlm_export_data {
- struct list_head led_held_locks;
- struct obd_import led_import;
-};
-
-static inline struct ldlm_extent *ldlm_res2extent(struct ldlm_resource *res)
-{
- return (struct ldlm_extent *)(res->lr_name);
-}
-
extern struct obd_ops ldlm_obd_ops;
extern char *ldlm_lockname[];
extern char *ldlm_typename[];
extern char *ldlm_it2str(int it);
-#define LDLM_DEBUG(lock, format, a...) \
-do { \
- if (lock->l_resource == NULL) \
- CDEBUG(D_DLMTRACE, "### " format \
- " (UNKNOWN: lock %p(rc=%d/%d,%d) mode %s/%s on " \
- "res \?\? (rc=\?\?) type \?\?\? remote "LPX64")\n" , \
- ## a, lock, lock->l_refc, lock->l_readers, \
- lock->l_writers, \
- ldlm_lockname[lock->l_granted_mode], \
- ldlm_lockname[lock->l_req_mode], \
- lock->l_remote_handle.addr); \
- else \
- CDEBUG(D_DLMTRACE, "### " format \
- " (%s: lock %p(rc=%d/%d,%d) mode %s/%s on res " \
- LPU64" (rc=%d) type %s remote "LPX64")\n" , ## a, \
- lock->l_resource->lr_namespace->ns_name, lock, \
- lock->l_refc, lock->l_readers, lock->l_writers, \
- ldlm_lockname[lock->l_granted_mode], \
- ldlm_lockname[lock->l_req_mode], \
- lock->l_resource->lr_name[0], \
- atomic_read(&lock->l_resource->lr_refcount), \
- ldlm_typename[lock->l_resource->lr_type], \
- lock->l_remote_handle.addr); \
+#define __LDLM_DEBUG(level, lock, format, a...) \
+do { \
+ if (lock->l_resource == NULL) { \
+ CDEBUG(level, "### " format \
+ " ns: \?\? lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "\
+ "res: \?\? rrc=\?\? type: \?\?\? flags: %x remote: " \
+ LPX64" expref: %d pid: %u\n" , ## a, lock, \
+ lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
+ lock->l_readers, lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_flags, lock->l_remote_handle.cookie, \
+ lock->l_export ? \
+ atomic_read(&lock->l_export->exp_refcount) : -99, \
+ lock->l_pid); \
+ break; \
+ } \
+ if (lock->l_resource->lr_type == LDLM_EXTENT) { \
+ CDEBUG(level, "### " format \
+ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
+ "res: "LPU64"/"LPU64"/"LPU64" rrc: %d type: %s ["LPU64 \
+ "->"LPU64"] (req "LPU64"->"LPU64") flags: %x remote: " \
+ LPX64" expref: %d pid: %u\n" , ## a, \
+ lock->l_resource->lr_namespace->ns_name, lock, \
+ lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
+ lock->l_readers, lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_resource->lr_name.name[0], \
+ lock->l_resource->lr_name.name[1], \
+ lock->l_resource->lr_name.name[2], \
+ atomic_read(&lock->l_resource->lr_refcount), \
+ ldlm_typename[lock->l_resource->lr_type], \
+ lock->l_policy_data.l_extent.start, \
+ lock->l_policy_data.l_extent.end, \
+ lock->l_req_extent.start, lock->l_req_extent.end, \
+ lock->l_flags, lock->l_remote_handle.cookie, \
+ lock->l_export ? \
+ atomic_read(&lock->l_export->exp_refcount) : -99, \
+ lock->l_pid); \
+ break; \
+ } \
+ if (lock->l_resource->lr_type == LDLM_FLOCK) { \
+ CDEBUG(level, "### " format \
+ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
+ "res: "LPU64"/"LPU64"/"LPU64" rrc: %d type: %s " \
+ "pid: "LPU64" nid: "LPU64" ["LPU64"->"LPU64"] " \
+ "flags: %x remote: "LPX64" expref: %d pid: %u\n", ## a,\
+ lock->l_resource->lr_namespace->ns_name, lock, \
+ lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
+ lock->l_readers, lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_resource->lr_name.name[0], \
+ lock->l_resource->lr_name.name[1], \
+ lock->l_resource->lr_name.name[2], \
+ atomic_read(&lock->l_resource->lr_refcount), \
+ ldlm_typename[lock->l_resource->lr_type], \
+ lock->l_policy_data.l_flock.pid, \
+ lock->l_policy_data.l_flock.nid, \
+ lock->l_policy_data.l_flock.start, \
+ lock->l_policy_data.l_flock.end, \
+ lock->l_flags, lock->l_remote_handle.cookie, \
+ lock->l_export ? \
+ atomic_read(&lock->l_export->exp_refcount) : -99, \
+ lock->l_pid); \
+ break; \
+ } \
+ if (lock->l_resource->lr_type == LDLM_IBITS) { \
+ CDEBUG(level, "### " format \
+ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
+ "res: "LPU64"/"LPU64"/"LPU64" bits "LPX64" rrc: %d " \
+ "type: %s flags: %x remote: "LPX64" expref: %d " \
+ "pid %u\n" , ## a, \
+ lock->l_resource->lr_namespace->ns_name, \
+ lock, lock->l_handle.h_cookie, \
+ atomic_read (&lock->l_refc), \
+ lock->l_readers, lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_resource->lr_name.name[0], \
+ lock->l_resource->lr_name.name[1], \
+ lock->l_resource->lr_name.name[2], \
+ lock->l_policy_data.l_inodebits.bits, \
+ atomic_read(&lock->l_resource->lr_refcount), \
+ ldlm_typename[lock->l_resource->lr_type], \
+ lock->l_flags, lock->l_remote_handle.cookie, \
+ lock->l_export ? \
+ atomic_read(&lock->l_export->exp_refcount) : -99, \
+ lock->l_pid); \
+ break; \
+ } \
+ { \
+ CDEBUG(level, "### " format \
+ " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
+ "res: "LPU64"/"LPU64"/"LPU64"/"LPU64" rrc: %d type: %s " \
+ "flags: %x remote: "LPX64" expref: %d " \
+ "pid: %u\n" , ## a, \
+ lock->l_resource->lr_namespace->ns_name, \
+ lock, lock->l_handle.h_cookie, \
+ atomic_read (&lock->l_refc), \
+ lock->l_readers, lock->l_writers, \
+ ldlm_lockname[lock->l_granted_mode], \
+ ldlm_lockname[lock->l_req_mode], \
+ lock->l_resource->lr_name.name[0], \
+ lock->l_resource->lr_name.name[1], \
+ lock->l_resource->lr_name.name[2], \
+ lock->l_resource->lr_name.name[3], \
+ atomic_read(&lock->l_resource->lr_refcount), \
+ ldlm_typename[lock->l_resource->lr_type], \
+ lock->l_flags, lock->l_remote_handle.cookie, \
+ lock->l_export ? \
+ atomic_read(&lock->l_export->exp_refcount) : -99, \
+ lock->l_pid); \
+ } \
} while (0)
+#define LDLM_DEBUG(lock, format, a...) __LDLM_DEBUG(D_DLMTRACE, lock, \
+ format, ## a)
+#define LDLM_ERROR(lock, format, a...) __LDLM_DEBUG(D_ERROR, lock, format, ## a)
+
#define LDLM_DEBUG_NOLOCK(format, a...) \
CDEBUG(D_DLMTRACE, "### " format "\n" , ## a)
+typedef int (*ldlm_processing_policy)(struct ldlm_lock *lock, int *flags,
+ int first_enq, ldlm_error_t *err,
+ struct list_head *work_list);
+
+/*
+ * Iterators.
+ */
+
+#define LDLM_ITER_CONTINUE 1 /* keep iterating */
+#define LDLM_ITER_STOP 2 /* stop iterating */
+
+typedef int (*ldlm_iterator_t)(struct ldlm_lock *, void *);
+typedef int (*ldlm_res_iterator_t)(struct ldlm_resource *, void *);
+
+int ldlm_resource_foreach(struct ldlm_resource *res, ldlm_iterator_t iter,
+ void *closure);
+int ldlm_namespace_foreach(struct ldlm_namespace *ns, ldlm_iterator_t iter,
+ void *closure);
+int ldlm_namespace_foreach_res(struct ldlm_namespace *ns,
+ ldlm_res_iterator_t iter, void *closure);
+
+int ldlm_replay_locks(struct obd_import *imp);
+void ldlm_change_cbdata(struct ldlm_namespace *, struct ldlm_res_id *,
+ ldlm_iterator_t iter, void *data);
+
+/* ldlm_flock.c */
+int ldlm_flock_completion_ast(struct ldlm_lock *lock, int flags, void *data);
+int ldlm_handle_flock_deadlock_check(struct ptlrpc_request *req);
+
/* ldlm_extent.c */
-int ldlm_extent_compat(struct ldlm_lock *, struct ldlm_lock *);
-int ldlm_extent_policy(struct ldlm_lock *, void *, ldlm_mode_t, void *);
+__u64 ldlm_extent_shift_kms(struct ldlm_lock *lock, __u64 old_kms);
+
/* ldlm_lockd.c */
-int ldlm_handle_enqueue(struct ptlrpc_request *req);
+int ldlm_server_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
+ void *data, int flag);
+int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data);
+int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data);
+int ldlm_handle_enqueue(struct ptlrpc_request *req, ldlm_completion_callback,
+ ldlm_blocking_callback, ldlm_glimpse_callback);
int ldlm_handle_convert(struct ptlrpc_request *req);
int ldlm_handle_cancel(struct ptlrpc_request *req);
+int ldlm_del_waiting_lock(struct ldlm_lock *lock);
+int ldlm_get_ref(void);
+void ldlm_put_ref(int force);
/* ldlm_lock.c */
-void ldlm_register_intent(int (*arg)(struct ldlm_lock *lock, void *req_cookie,
- ldlm_mode_t mode, void *data));
-void ldlm_unregister_intent(void);
-void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh);
-struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *handle);
+ldlm_processing_policy ldlm_get_processing_policy(struct ldlm_resource *res);
+void ldlm_register_intent(struct ldlm_namespace *ns, ldlm_res_policy arg);
void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh);
+struct ldlm_lock *__ldlm_handle2lock(struct lustre_handle *, int flags);
+void ldlm_cancel_callback(struct ldlm_lock *);
+int ldlm_lock_set_data(struct lustre_handle *, void *data);
+void ldlm_lock_remove_from_lru(struct ldlm_lock *);
+struct ldlm_lock *ldlm_handle2lock_ns(struct ldlm_namespace *,
+ struct lustre_handle *);
+
+static inline struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *h)
+{
+ return __ldlm_handle2lock(h, 0);
+}
#define LDLM_LOCK_PUT(lock) \
do { \
- /*LDLM_DEBUG(lock, "put");*/ \
+ /*LDLM_DEBUG((lock), "put");*/ \
ldlm_lock_put(lock); \
} while (0)
#define LDLM_LOCK_GET(lock) \
({ \
ldlm_lock_get(lock); \
- /*LDLM_DEBUG(lock, "get");*/ \
+ /*LDLM_DEBUG((lock), "get");*/ \
lock; \
})
void ldlm_lock_destroy(struct ldlm_lock *lock);
void ldlm_lock2desc(struct ldlm_lock *lock, struct ldlm_lock_desc *desc);
void ldlm_lock_addref(struct lustre_handle *lockh, __u32 mode);
-void ldlm_lock_addref_internal(struct ldlm_lock* , __u32 mode);
void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode);
-void ldlm_grant_lock(struct ldlm_lock *lock);
-int ldlm_lock_match(struct ldlm_namespace *ns, __u64 *res_id, __u32 type,
- void *cookie, int cookielen, ldlm_mode_t mode,
- struct lustre_handle *lockh);
-struct ldlm_lock *
-ldlm_lock_create(struct ldlm_namespace *ns,
- struct lustre_handle *parent_lock_handle,
- __u64 *res_id, __u32 type, ldlm_mode_t mode, void *data,
- __u32 data_len);
-ldlm_error_t ldlm_lock_enqueue(struct ldlm_lock *lock, void *cookie,
- int cookie_len, int *flags,
- ldlm_completion_callback completion,
- ldlm_blocking_callback blocking);
+void ldlm_lock_decref_and_cancel(struct lustre_handle *lockh, __u32 mode);
+void ldlm_lock_allow_match(struct ldlm_lock *lock);
+int ldlm_lock_match(struct ldlm_namespace *ns, int flags, struct ldlm_res_id *,
+ __u32 type, ldlm_policy_data_t *, ldlm_mode_t mode,
+ struct lustre_handle *);
struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
int *flags);
void ldlm_lock_cancel(struct ldlm_lock *lock);
-void ldlm_run_ast_work(struct list_head *rpc_list);
+void ldlm_cancel_locks_for_export(struct obd_export *export);
void ldlm_reprocess_all(struct ldlm_resource *res);
-void ldlm_lock_dump(struct ldlm_lock *lock);
+void ldlm_reprocess_all_ns(struct ldlm_namespace *ns);
+void ldlm_lock_dump(int level, struct ldlm_lock *lock, int pos);
+void ldlm_lock_dump_handle(int level, struct lustre_handle *);
/* ldlm_test.c */
int ldlm_test(struct obd_device *device, struct lustre_handle *connh);
-int ldlm_regression_start(struct obd_device *obddev,
- struct lustre_handle *connh,
- unsigned int threads, unsigned int max_locks_in,
- unsigned int num_resources_in,
+int ldlm_regression_start(struct obd_device *obddev,
+ struct lustre_handle *connh,
+ unsigned int threads, unsigned int max_locks_in,
+ unsigned int num_resources_in,
unsigned int num_extents_in);
int ldlm_regression_stop(void);
/* resource.c */
struct ldlm_namespace *ldlm_namespace_new(char *name, __u32 local);
-int ldlm_namespace_free(struct ldlm_namespace *ns);
-int ldlm_proc_setup(struct obd_device *obd);
-void ldlm_proc_cleanup(struct obd_device *obd);
+int ldlm_namespace_cleanup(struct ldlm_namespace *ns, int flags);
+int ldlm_namespace_free(struct ldlm_namespace *ns, int force);
+int ldlm_proc_setup(void);
+void ldlm_proc_cleanup(void);
/* resource.c - internal */
struct ldlm_resource *ldlm_resource_get(struct ldlm_namespace *ns,
struct ldlm_resource *parent,
- __u64 *name, __u32 type, int create);
+ struct ldlm_res_id, __u32 type,
+ int create);
struct ldlm_resource *ldlm_resource_getref(struct ldlm_resource *res);
-int ldlm_resource_put(struct ldlm_resource *res);
+int ldlm_resource_putref(struct ldlm_resource *res);
void ldlm_resource_add_lock(struct ldlm_resource *res, struct list_head *head,
struct ldlm_lock *lock);
void ldlm_resource_unlink_lock(struct ldlm_lock *lock);
void ldlm_res2desc(struct ldlm_resource *res, struct ldlm_resource_desc *desc);
-void ldlm_dump_all_namespaces(void);
-void ldlm_namespace_dump(struct ldlm_namespace *);
-void ldlm_resource_dump(struct ldlm_resource *);
-int ldlm_lock_change_resource(struct ldlm_lock *, __u64 new_resid[3]);
+void ldlm_dump_all_namespaces(int level);
+void ldlm_namespace_dump(int level, struct ldlm_namespace *);
+void ldlm_resource_dump(int level, struct ldlm_resource *);
+int ldlm_lock_change_resource(struct ldlm_namespace *, struct ldlm_lock *,
+ struct ldlm_res_id);
/* ldlm_request.c */
-int ldlm_completion_ast(struct ldlm_lock *lock, int flags);
-int ldlm_cli_enqueue(struct lustre_handle *conn,
+int ldlm_expired_completion_wait(void *data);
+int ldlm_completion_ast(struct ldlm_lock *lock, int flags, void *data);
+int ldlm_cli_enqueue(struct obd_export *exp,
struct ptlrpc_request *req,
struct ldlm_namespace *ns,
- struct lustre_handle *parent_lock_handle,
- __u64 *res_id,
+ struct ldlm_res_id,
__u32 type,
- void *cookie, int cookielen,
+ ldlm_policy_data_t *,
ldlm_mode_t mode,
int *flags,
+ ldlm_blocking_callback blocking,
ldlm_completion_callback completion,
- ldlm_blocking_callback callback,
+ ldlm_glimpse_callback glimpse,
void *data,
- __u32 data_len,
+ void *lvb,
+ __u32 lvb_len,
+ void *lvb_swabber,
struct lustre_handle *lockh);
-int ldlm_match_or_enqueue(struct lustre_handle *connh,
- struct ptlrpc_request *req,
- struct ldlm_namespace *ns,
- struct lustre_handle *parent_lock_handle,
- __u64 *res_id,
- __u32 type,
- void *cookie, int cookielen,
- ldlm_mode_t mode,
- int *flags,
- ldlm_completion_callback completion,
- ldlm_blocking_callback callback,
- void *data,
- __u32 data_len,
- struct lustre_handle *lockh);
int ldlm_server_ast(struct lustre_handle *lockh, struct ldlm_lock_desc *new,
void *data, __u32 data_len);
int ldlm_cli_convert(struct lustre_handle *, int new_mode, int *flags);
int ldlm_cli_cancel(struct lustre_handle *lockh);
-int ldlm_cli_cancel_unused(struct ldlm_namespace *ns, __u64 *res_id);
+int ldlm_cli_cancel_unused(struct ldlm_namespace *, struct ldlm_res_id *,
+ int flags, void *opaque);
/* mds/handler.c */
-/* This has to be here because recurisve inclusion sucks. */
+/* This has to be here because recursive inclusion sucks. */
+int intent_disposition(struct ldlm_reply *rep, int flag);
+void intent_set_disposition(struct ldlm_reply *rep, int flag);
int mds_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
- void *data, __u32 data_len);
+ void *data, int flag);
-#endif /* __KERNEL__ */
/* ioctls for trying requests */
#define IOC_LDLM_TYPE 'f'
#define IOC_LDLM_REGRESS_STOP _IOWR('f', 43, long)
#define IOC_LDLM_MAX_NR 43
+static inline void lock_res(struct ldlm_resource *res)
+{
+ spin_lock(&res->lr_lock);
+}
+
+static inline void unlock_res(struct ldlm_resource *res)
+{
+ spin_unlock(&res->lr_lock);
+}
+
+static inline void check_res_locked(struct ldlm_resource *res)
+{
+ LASSERT_SPIN_LOCKED(&res->lr_lock);
+}
+#ifdef __KERNEL__
+static inline void lock_bitlock(struct ldlm_lock *lock)
+{
+ bit_spin_lock(LDLM_FL_LOCK_PROTECT_BIT, (void *) &lock->l_flags);
+ LASSERT(lock->l_pidb == 0);
+ lock->l_pidb = current->pid;
+}
+
+static inline void unlock_bitlock(struct ldlm_lock *lock)
+{
+ LASSERT(lock->l_pidb == current->pid);
+ lock->l_pidb = 0;
+ bit_spin_unlock(LDLM_FL_LOCK_PROTECT_BIT, (void *) &lock->l_flags);
+}
+#endif
+struct ldlm_resource * lock_res_and_lock(struct ldlm_lock *lock);
+void unlock_res_and_lock(struct ldlm_lock *lock);
+
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff