*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2010, 2014, Intel Corporation.
+ * Copyright (c) 2010, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
struct obd_ops;
struct obd_device;
+extern struct kset *ldlm_ns_kset;
+extern struct kset *ldlm_svc_kset;
+
#define OBD_LDLM_DEVICENAME "ldlm"
#define LDLM_DEFAULT_LRU_SIZE (100 * num_online_cpus())
-#define LDLM_DEFAULT_MAX_ALIVE (cfs_time_seconds(3900)) /* 65 min */
+#define LDLM_DEFAULT_MAX_ALIVE 3900 /* 3900 seconds ~65 min */
#define LDLM_CTIME_AGE_LIMIT (10)
+/* if client lock is unused for that time it can be cancelled if any other
+ * client shows interest in that lock, e.g. glimpse is occured. */
+#define LDLM_DIRTY_AGE_LIMIT (10)
#define LDLM_DEFAULT_PARALLEL_AST_LIMIT 1024
/**
* LDLM non-error return states
*/
-typedef enum {
- ELDLM_OK = 0,
- ELDLM_LOCK_MATCHED = 1,
-
- ELDLM_LOCK_CHANGED = 300,
- ELDLM_LOCK_ABORTED = 301,
- ELDLM_LOCK_REPLACED = 302,
- ELDLM_NO_LOCK_DATA = 303,
- ELDLM_LOCK_WOULDBLOCK = 304,
-
- ELDLM_NAMESPACE_EXISTS = 400,
- ELDLM_BAD_NAMESPACE = 401
-} ldlm_error_t;
+enum ldlm_error {
+ ELDLM_OK = 0,
+ ELDLM_LOCK_MATCHED = 1,
+
+ ELDLM_LOCK_CHANGED = 300,
+ ELDLM_LOCK_ABORTED = 301,
+ ELDLM_LOCK_REPLACED = 302,
+ ELDLM_NO_LOCK_DATA = 303,
+ ELDLM_LOCK_WOULDBLOCK = 304,
+
+ ELDLM_NAMESPACE_EXISTS = 400,
+ ELDLM_BAD_NAMESPACE = 401,
+};
/**
* LDLM namespace type.
* decisions about lack of conflicts or do any autonomous lock granting without
* first speaking to a server.
*/
-typedef enum {
- LDLM_NAMESPACE_SERVER = 1 << 0,
- LDLM_NAMESPACE_CLIENT = 1 << 1
-} ldlm_side_t;
+enum ldlm_side {
+ LDLM_NAMESPACE_SERVER = 0x01,
+ LDLM_NAMESPACE_CLIENT = 0x02
+};
/**
* The blocking callback is overloaded to perform two functions. These flags
#define LCK_COMPAT_COS (LCK_COS)
/** @} Lock Compatibility Matrix */
-extern ldlm_mode_t lck_compat_array[];
+extern enum ldlm_mode lck_compat_array[];
-static inline void lockmode_verify(ldlm_mode_t mode)
+static inline void lockmode_verify(enum ldlm_mode mode)
{
- LASSERT(mode > LCK_MINMODE && mode < LCK_MAXMODE);
+ LASSERT(mode > LCK_MINMODE && mode < LCK_MAXMODE);
}
-static inline int lockmode_compat(ldlm_mode_t exist_mode, ldlm_mode_t new_mode)
+static inline int lockmode_compat(enum ldlm_mode exist_mode,
+ enum ldlm_mode new_mode)
{
- return (lck_compat_array[exist_mode] & new_mode);
+ return lck_compat_array[exist_mode] & new_mode;
}
/*
* This feature is commonly referred to as lru_resize.
*/
struct ldlm_pool {
- /** Pool proc directory. */
- struct proc_dir_entry *pl_proc_dir;
+ /** Pool debugfs directory. */
+ struct dentry *pl_debugfs_entry;
/** Pool name, must be long enough to hold compound proc entry name. */
char pl_name[100];
/** Lock for protecting SLV/CLV updates. */
* server_slv * lock_volume_factor. */
atomic_t pl_lock_volume_factor;
/** Time when last SLV from server was obtained. */
- time_t pl_recalc_time;
+ time64_t pl_recalc_time;
/** Recalculation period for pool. */
- time_t pl_recalc_period;
+ time64_t pl_recalc_period;
/** Recalculation and shrink operations. */
struct ldlm_pool_ops *pl_ops;
/** Number of planned locks for next period. */
int pl_grant_plan;
/** Pool statistics. */
struct lprocfs_stats *pl_stats;
+
+ /* sysfs object */
+ struct kobject pl_kobj;
+ struct completion pl_kobj_unregister;
};
-typedef int (*ldlm_res_policy)(struct ldlm_namespace *, struct ldlm_lock **,
- void *req_cookie, ldlm_mode_t mode, __u64 flags,
- void *data);
+typedef int (*ldlm_res_policy)(const struct lu_env *env,
+ struct ldlm_namespace *,
+ struct ldlm_lock **, void *req_cookie,
+ enum ldlm_mode mode, __u64 flags, void *data);
typedef int (*ldlm_cancel_cbt)(struct ldlm_lock *lock);
* of ldlm_[res_]lvbo_[init,update,fill]() functions.
*/
struct ldlm_valblock_ops {
- int (*lvbo_init)(struct ldlm_resource *res);
- int (*lvbo_update)(struct ldlm_resource *res,
- struct ptlrpc_request *r,
- int increase);
- int (*lvbo_free)(struct ldlm_resource *res);
+ int (*lvbo_init)(struct ldlm_resource *res);
+ int (*lvbo_update)(struct ldlm_resource *res, struct ldlm_lock *lock,
+ struct ptlrpc_request *r, int increase);
+ int (*lvbo_free)(struct ldlm_resource *res);
/* Return size of lvb data appropriate RPC size can be reserved */
int (*lvbo_size)(struct ldlm_lock *lock);
/* Called to fill in lvb data to RPC buffer @buf */
- int (*lvbo_fill)(struct ldlm_lock *lock, void *buf, int buflen);
+ int (*lvbo_fill)(struct ldlm_lock *lock, void *buf, int *buflen);
};
/**
* LDLM pools related, type of lock pool in the namespace.
* Greedy means release cached locks aggressively
*/
-typedef enum {
+enum ldlm_appetite {
LDLM_NAMESPACE_GREEDY = 1 << 0,
LDLM_NAMESPACE_MODEST = 1 << 1
-} ldlm_appetite_t;
+};
/**
* Default values for the "max_nolock_size", "contention_time" and
* fact the network or overall system load is at fault
*/
struct adaptive_timeout nsb_at_estimate;
+ /**
+ * Which res in the bucket should we start with the reclaim.
+ */
+ int nsb_reclaim_start;
+ /* counter of entries in this bucket */
+ atomic_t nsb_count;
};
enum {
/** LDLM namespace lock stats */
- LDLM_NSS_LOCKS = 0,
- LDLM_NSS_LAST
+ LDLM_NSS_LOCKS = 0,
+ LDLM_NSS_LAST
};
-typedef enum {
- /** invalide type */
- LDLM_NS_TYPE_UNKNOWN = 0,
- /** mdc namespace */
- LDLM_NS_TYPE_MDC,
- /** mds namespace */
- LDLM_NS_TYPE_MDT,
- /** osc namespace */
- LDLM_NS_TYPE_OSC,
- /** ost namespace */
- LDLM_NS_TYPE_OST,
- /** mgc namespace */
- LDLM_NS_TYPE_MGC,
- /** mgs namespace */
- LDLM_NS_TYPE_MGT,
-} ldlm_ns_type_t;
+enum ldlm_ns_type {
+ LDLM_NS_TYPE_UNKNOWN = 0, /**< invalid type */
+ LDLM_NS_TYPE_MDC, /**< MDC namespace */
+ LDLM_NS_TYPE_MDT, /**< MDT namespace */
+ LDLM_NS_TYPE_OSC, /**< OSC namespace */
+ LDLM_NS_TYPE_OST, /**< OST namespace */
+ LDLM_NS_TYPE_MGC, /**< MGC namespace */
+ LDLM_NS_TYPE_MGT, /**< MGT namespace */
+};
/**
* LDLM Namespace.
struct obd_device *ns_obd;
/** Flag indicating if namespace is on client instead of server */
- ldlm_side_t ns_client;
+ enum ldlm_side ns_client;
+
+ /** name of this namespace */
+ char *ns_name;
/** Resource hash table for namespace. */
- cfs_hash_t *ns_rs_hash;
+ struct cfs_hash *ns_rs_hash;
+ struct ldlm_ns_bucket *ns_rs_buckets;
+ unsigned int ns_bucket_bits;
/** serialize */
spinlock_t ns_lock;
/** Client side original connect flags supported by server. */
__u64 ns_orig_connect_flags;
- /* namespace proc dir entry */
- struct proc_dir_entry *ns_proc_dir_entry;
+ /* namespace debugfs dir entry */
+ struct dentry *ns_debugfs_entry;
/**
* Position in global namespace list linking all namespaces on
struct list_head ns_unused_list;
/** Number of locks in the LRU list above */
int ns_nr_unused;
+ struct list_head *ns_last_pos;
/**
* Maximum number of locks permitted in the LRU. If 0, means locks
* controlled by available memory on this client and on server.
*/
unsigned int ns_max_unused;
- /** Maximum allowed age (last used time) for locks in the LRU */
- unsigned int ns_max_age;
+
+ /** Maximum allowed age (last used time) for locks in the LRU. Set in
+ * seconds from userspace, but stored in ns to avoid repeat conversions.
+ */
+ ktime_t ns_max_age;
+
/**
* Server only: number of times we evicted clients due to lack of reply
* to ASTs.
*/
unsigned int ns_timeouts;
/**
- * Number of seconds since the file change time after which the
- * MDT will return an UPDATE lock along with a LOOKUP lock.
+ * Number of seconds since the file change time after which
+ * the MDT will return an UPDATE lock along with a LOOKUP lock.
* This allows the client to start caching negative dentries
* for a directory and may save an RPC for a later stat.
*/
- unsigned int ns_ctime_age_limit;
-
+ timeout_t ns_ctime_age_limit;
+ /**
+ * Number of (nano)seconds since the lock was last used. The client
+ * may cancel the lock older than this age and flush related data if
+ * another client shows interest in this lock by doing glimpse request.
+ * This allows to cache stat data locally for such files early. Set in
+ * seconds from userspace, but stored in ns to avoid repeat conversions.
+ */
+ ktime_t ns_dirty_age_limit;
/**
* Used to rate-limit ldlm_namespace_dump calls.
* \see ldlm_namespace_dump. Increased by 10 seconds every time
* it is called.
*/
- cfs_time_t ns_next_dump;
+ time64_t ns_next_dump;
/** "policy" function that does actual lock conflict determination */
ldlm_res_policy ns_policy;
/** LDLM pool structure for this namespace */
struct ldlm_pool ns_pool;
/** Definition of how eagerly unused locks will be released from LRU */
- ldlm_appetite_t ns_appetite;
+ enum ldlm_appetite ns_appetite;
/**
* If more than \a ns_contended_locks are found, the resource is
* The resources in this namespace remember contended state during
* \a ns_contention_time, in seconds.
*/
- unsigned ns_contention_time;
+ timeout_t ns_contention_time;
/**
* Limit size of contended extent locks, in bytes.
* recalculation of LDLM pool statistics should be skipped.
*/
unsigned ns_stopping:1;
+
+ /**
+ * Which bucket should we start with the lock reclaim.
+ */
+ int ns_reclaim_start;
+
+ struct kobject ns_kobj; /* sysfs object */
+ struct completion ns_kobj_unregister;
};
/**
static inline int ns_is_client(struct ldlm_namespace *ns)
{
LASSERT(ns != NULL);
- LASSERT(!(ns->ns_client & ~(LDLM_NAMESPACE_CLIENT |
- LDLM_NAMESPACE_SERVER)));
LASSERT(ns->ns_client == LDLM_NAMESPACE_CLIENT ||
ns->ns_client == LDLM_NAMESPACE_SERVER);
return ns->ns_client == LDLM_NAMESPACE_CLIENT;
static inline int ns_is_server(struct ldlm_namespace *ns)
{
LASSERT(ns != NULL);
- LASSERT(!(ns->ns_client & ~(LDLM_NAMESPACE_CLIENT |
- LDLM_NAMESPACE_SERVER)));
LASSERT(ns->ns_client == LDLM_NAMESPACE_CLIENT ||
ns->ns_client == LDLM_NAMESPACE_SERVER);
return ns->ns_client == LDLM_NAMESPACE_SERVER;
/** Type for glimpse callback function of a lock. */
typedef int (*ldlm_glimpse_callback)(struct ldlm_lock *lock, void *data);
+/** Type for created callback function of a lock. */
+typedef void (*ldlm_created_callback)(struct ldlm_lock *lock);
+
/** Work list for sending GL ASTs to multiple locks. */
struct ldlm_glimpse_work {
struct ldlm_lock *gl_lock; /* lock to glimpse */
__u32 gl_flags;/* see LDLM_GL_WORK_* below */
union ldlm_gl_desc *gl_desc; /* glimpse descriptor to be packed in
* glimpse callback request */
+ ptlrpc_interpterer_t gl_interpret_reply;
+ void *gl_interpret_data;
+};
+
+struct ldlm_bl_desc {
+ unsigned int bl_same_client:1,
+ bl_cos_incompat:1;
+};
+
+struct ldlm_cb_set_arg {
+ struct ptlrpc_request_set *set;
+ int type; /* LDLM_{CP,BL,GL}_CALLBACK */
+ atomic_t restart;
+ struct list_head *list;
+ union ldlm_gl_desc *gl_desc; /* glimpse AST descriptor */
+ ptlrpc_interpterer_t gl_interpret_reply;
+ void *gl_interpret_data;
+ struct ldlm_bl_desc *bl_desc;
+};
+
+struct ldlm_cb_async_args {
+ struct ldlm_cb_set_arg *ca_set_arg;
+ struct ldlm_lock *ca_lock;
};
-/** The ldlm_glimpse_work is allocated on the stack and should not be freed. */
-#define LDLM_GL_WORK_NOFREE 0x1
+/** The ldlm_glimpse_work was slab allocated & must be freed accordingly.*/
+#define LDLM_GL_WORK_SLAB_ALLOCATED 0x1
/** Interval node data for each LDLM_EXTENT lock. */
struct ldlm_interval {
struct ldlm_interval_tree {
/** Tree size. */
int lit_size;
- ldlm_mode_t lit_mode; /* lock mode */
+ enum ldlm_mode lit_mode; /* lock mode */
struct interval_node *lit_root; /* actual ldlm_interval */
};
+/**
+ * Lists of waiting locks for each inodebit type.
+ * A lock can be in several liq_waiting lists and it remains in lr_waiting.
+ */
+struct ldlm_ibits_queues {
+ struct list_head liq_waiting[MDS_INODELOCK_NUMBITS];
+};
+
+struct ldlm_ibits_node {
+ struct list_head lin_link[MDS_INODELOCK_NUMBITS];
+ struct ldlm_lock *lock;
+};
+
/** Whether to track references to exports by LDLM locks. */
#define LUSTRE_TRACKS_LOCK_EXP_REFS (0)
/** Cancel flags. */
-typedef enum {
- LCF_ASYNC = 0x1, /* Cancel locks asynchronously. */
- LCF_LOCAL = 0x2, /* Cancel locks locally, not notifing server */
- LCF_BL_AST = 0x4, /* Cancel locks marked as LDLM_FL_BL_AST
- * in the same RPC */
-} ldlm_cancel_flags_t;
+enum ldlm_cancel_flags {
+ LCF_ASYNC = 0x1, /* Cancel locks asynchronously. */
+ LCF_LOCAL = 0x2, /* Cancel locks locally, not notifing server */
+ LCF_BL_AST = 0x4, /* Cancel LDLM_FL_BL_AST locks in the same RPC */
+};
struct ldlm_flock {
- __u64 start;
- __u64 end;
- __u64 owner;
- __u64 blocking_owner;
- struct obd_export *blocking_export;
- /* Protected by the hash lock */
- __u32 blocking_refs;
- __u32 pid;
+ __u64 start;
+ __u64 end;
+ __u64 owner;
+ __u64 blocking_owner;
+ struct obd_export *blocking_export;
+ atomic_t blocking_refs;
+ __u32 pid;
};
union ldlm_policy_data {
struct ldlm_inodebits l_inodebits;
};
-typedef union ldlm_policy_data ldlm_policy_data_t;
-
-void ldlm_convert_policy_to_wire(ldlm_type_t type,
- const ldlm_policy_data_t *lpolicy,
- ldlm_wire_policy_data_t *wpolicy);
-void ldlm_convert_policy_to_local(struct obd_export *exp, ldlm_type_t type,
- const ldlm_wire_policy_data_t *wpolicy,
- ldlm_policy_data_t *lpolicy);
+void ldlm_convert_policy_to_wire(enum ldlm_type type,
+ const union ldlm_policy_data *lpolicy,
+ union ldlm_wire_policy_data *wpolicy);
+void ldlm_convert_policy_to_local(struct obd_export *exp, enum ldlm_type type,
+ const union ldlm_wire_policy_data *wpolicy,
+ union ldlm_policy_data *lpolicy);
enum lvb_type {
LVB_T_NONE = 0,
*/
struct portals_handle l_handle;
/**
- * Lock reference count.
- * This is how many users have pointers to actual structure, so that
- * we do not accidentally free lock structure that is in use.
- */
- atomic_t l_refc;
- /**
* Internal spinlock protects l_resource. We should hold this lock
* first before taking res_lock.
*/
struct list_head l_lru;
/**
* Linkage to resource's lock queues according to current lock state.
- * (could be granted, waiting or converting)
+ * (could be granted or waiting)
* Protected by lr_lock in struct ldlm_resource.
*/
struct list_head l_res_link;
/**
- * Tree node for ldlm_extent.
+ * Internal structures per lock type..
*/
- struct ldlm_interval *l_tree_node;
+ union {
+ struct ldlm_interval *l_tree_node;
+ struct ldlm_ibits_node *l_ibits_node;
+ };
/**
* Per export hash of locks.
* Protected by per-bucket exp->exp_lock_hash locks.
* Requested mode.
* Protected by lr_lock.
*/
- ldlm_mode_t l_req_mode;
+ enum ldlm_mode l_req_mode;
/**
* Granted mode, also protected by lr_lock.
*/
- ldlm_mode_t l_granted_mode;
+ enum ldlm_mode l_granted_mode;
/** Lock completion handler pointer. Called when lock is granted. */
ldlm_completion_callback l_completion_ast;
/**
* Representation of private data specific for a lock type.
* Examples are: extent range for extent lock or bitmask for ibits locks
*/
- ldlm_policy_data_t l_policy_data;
+ union ldlm_policy_data l_policy_data;
/**
* Lock state flags. Protected by lr_lock.
wait_queue_head_t l_waitq;
/**
- * Seconds. It will be updated if there is any activity related to
- * the lock, e.g. enqueue the lock or send blocking AST.
- */
- cfs_time_t l_last_activity;
-
- /**
- * Time last used by e.g. being matched by lock match.
- * Jiffies. Should be converted to time if needed.
+ * Time, in nanoseconds, last used by e.g. being matched by lock match.
*/
- cfs_time_t l_last_used;
+ ktime_t l_last_used;
/** Originally requested extent for the extent lock. */
struct ldlm_extent l_req_extent;
/**
* Temporary storage for a LVB received during an enqueue operation.
+ * May be vmalloc'd, so needs to be freed with OBD_FREE_LARGE().
*/
__u32 l_lvb_len;
void *l_lvb_data;
/** Private storage for lock user. Opaque to LDLM. */
void *l_ast_data;
+ union {
+ /**
+ * Seconds. It will be updated if there is any activity related to
+ * the lock at client, e.g. enqueue the lock. For server it is the
+ * time when blocking ast was sent.
+ */
+ time64_t l_activity;
+ time64_t l_blast_sent;
+ };
+
+ /* separate ost_lvb used mostly by Data-on-MDT for now.
+ * It is introduced to don't mix with layout lock data. */
+ struct ost_lvb l_ost_lvb;
/*
* Server-side-only members.
*/
* The lists this could be linked into are:
* waiting_locks_list (protected by waiting_locks_spinlock),
* then if the lock timed out, it is moved to
- * expired_lock_thread.elt_expired_locks for further processing.
- * Protected by elt_lock.
+ * expired_lock_list for further processing.
*/
struct list_head l_pending_chain;
* under this lock.
* \see ost_rw_prolong_locks
*/
- cfs_time_t l_callback_timeout;
+ time64_t l_callback_timestamp;
/** Local PID of process which created this lock. */
__u32 l_pid;
};
/**
+ * Describe the overlap between two locks. itree_overlap_cb data.
+ */
+struct ldlm_match_data {
+ struct ldlm_lock *lmd_old;
+ struct ldlm_lock *lmd_lock;
+ enum ldlm_mode *lmd_mode;
+ union ldlm_policy_data *lmd_policy;
+ __u64 lmd_flags;
+ __u64 lmd_skip_flags;
+ int lmd_unref;
+ bool lmd_has_ast_data;
+};
+
+/** For uncommitted cross-MDT lock, store transno this lock belongs to */
+#define l_transno l_client_cookie
+
+/** For uncommitted cross-MDT lock, which is client lock, share with l_rk_ast
+ * which is for server. */
+#define l_slc_link l_rk_ast
+
+#define HANDLE_MAP_SIZE ((LMV_MAX_STRIPE_COUNT + 7) >> 3)
+
+struct lustre_handle_array {
+ unsigned int ha_count;
+ /* ha_map is used as bit flag to indicate handle is remote or local */
+ char ha_map[HANDLE_MAP_SIZE];
+ struct lustre_handle ha_handles[0];
+};
+
+/**
* LDLM resource description.
* Basically, resource is a representation for a single object.
* Object has a name which is currently 4 64-bit integers. LDLM user is
*/
struct hlist_node lr_hash;
+ /** Reference count for this resource */
+ atomic_t lr_refcount;
+
/** Spinlock to protect locks under this resource. */
spinlock_t lr_lock;
* @{ */
/** List of locks in granted state */
struct list_head lr_granted;
- /** List of locks waiting to change their granted mode (converted) */
- struct list_head lr_converting;
/**
* List of locks that could not be granted due to conflicts and
* that are waiting for conflicts to go away */
struct list_head lr_waiting;
/** @} */
- /* XXX No longer needed? Remove ASAP */
- ldlm_mode_t lr_most_restr;
-
- /** Type of locks this resource can hold. Only one type per resource. */
- ldlm_type_t lr_type; /* LDLM_{PLAIN,EXTENT,FLOCK,IBITS} */
-
/** Resource name */
struct ldlm_res_id lr_name;
- /** Reference count for this resource */
- atomic_t lr_refcount;
- /**
- * Interval trees (only for extent locks) for all modes of this resource
- */
- struct ldlm_interval_tree lr_itree[LCK_MODE_NUM];
+ union {
+ /**
+ * Interval trees (only for extent locks) for all modes of
+ * this resource
+ */
+ struct ldlm_interval_tree *lr_itree;
+ struct ldlm_ibits_queues *lr_ibits_queues;
+ };
+
+ union {
+ /**
+ * When the resource was considered as contended,
+ * used only on server side.
+ */
+ time64_t lr_contention_time;
+ /**
+ * Associated inode, used only on client side.
+ */
+ struct inode *lr_lvb_inode;
+ };
+
+ /** Type of locks this resource can hold. Only one type per resource. */
+ enum ldlm_type lr_type; /* LDLM_{PLAIN,EXTENT,FLOCK,IBITS} */
/**
* Server-side-only lock value block elements.
* To serialize lvbo_init.
*/
- struct mutex lr_lvb_mutex;
int lr_lvb_len;
- /** is lvb initialized ? */
- bool lr_lvb_initialized;
+ struct mutex lr_lvb_mutex;
/** protected by lr_lock */
void *lr_lvb_data;
+ /** is lvb initialized ? */
+ bool lr_lvb_initialized;
- /** When the resource was considered as contended. */
- cfs_time_t lr_contention_time;
/** List of references to this resource. For debugging. */
struct lu_ref lr_reference;
-
- struct inode *lr_lvb_inode;
};
+static inline int ldlm_is_granted(struct ldlm_lock *lock)
+{
+ return lock->l_req_mode == lock->l_granted_mode;
+}
+
static inline bool ldlm_has_layout(struct ldlm_lock *lock)
{
return lock->l_resource->lr_type == LDLM_IBITS &&
lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_LAYOUT;
}
+static inline bool ldlm_has_dom(struct ldlm_lock *lock)
+{
+ return lock->l_resource->lr_type == LDLM_IBITS &&
+ lock->l_policy_data.l_inodebits.bits & MDS_INODELOCK_DOM;
+}
+
static inline char *
ldlm_ns_name(struct ldlm_namespace *ns)
{
- return ns->ns_rs_hash->hs_name;
+ return ns->ns_name;
}
static inline struct ldlm_namespace *
return 0;
}
-static inline int ldlm_lvbo_fill(struct ldlm_lock *lock, void *buf, int len)
+static inline int ldlm_lvbo_fill(struct ldlm_lock *lock, void *buf, int *len)
{
struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
int rc;
* Common ldlm_enqueue parameters
*/
struct ldlm_enqueue_info {
- __u32 ei_type; /** Type of the lock being enqueued. */
- __u32 ei_mode; /** Mode of the lock being enqueued. */
- void *ei_cb_bl; /** blocking lock callback */
- void *ei_cb_cp; /** lock completion callback */
- void *ei_cb_gl; /** lock glimpse callback */
- void *ei_cbdata; /** Data to be passed into callbacks. */
- unsigned int ei_enq_slave:1; /* whether enqueue slave stripes */
+ enum ldlm_type ei_type; /** Type of the lock being enqueued. */
+ enum ldlm_mode ei_mode; /** Mode of the lock being enqueued. */
+ void *ei_cb_bl; /** blocking lock callback */
+ void *ei_cb_local_bl; /** blocking local lock callback */
+ void *ei_cb_cp; /** lock completion callback */
+ void *ei_cb_gl; /** lock glimpse callback */
+ ldlm_created_callback ei_cb_created; /** lock created callback */
+ void *ei_cbdata; /** Data to be passed into callbacks. */
+ void *ei_namespace; /** lock namespace **/
+ u64 ei_inodebits; /** lock inode bits **/
+ unsigned int ei_enq_slave:1; /** whether enqueue slave stripes */
+ unsigned int ei_enq_slot:1; /** whether acquire rpc slot */
};
#define ei_res_id ei_cb_gl
-extern struct obd_ops ldlm_obd_ops;
-
extern char *ldlm_lockname[];
extern char *ldlm_typename[];
-extern char *ldlm_it2str(int it);
+extern const char *ldlm_it2str(enum ldlm_intent_flags it);
/**
* Just a fancy CDEBUG call with log level preset to LDLM_DEBUG.
* Rate-limited version of lock printing function.
*/
#define LDLM_DEBUG_LIMIT(mask, lock, fmt, a...) do { \
- static cfs_debug_limit_state_t _ldlm_cdls; \
+ static struct cfs_debug_limit_state _ldlm_cdls; \
LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, mask, &_ldlm_cdls); \
ldlm_lock_debug(&msgdata, mask, &_ldlm_cdls, lock, "### " fmt , ##a);\
} while (0)
# define LDLM_ERROR(lock, fmt, a...) ((void)0)
#endif
+/*
+ * Three intentions can be used for the policy functions in
+ * ldlm_processing_policy.
+ *
+ * LDLM_PROCESS_RESCAN:
+ *
+ * It's used when policy functions are called from ldlm_reprocess_queue() to
+ * reprocess the wait list and try to grant locks, blocking ASTs
+ * have already been sent in this situation, completion ASTs need be sent for
+ * the locks being granted.
+ *
+ * LDLM_PROCESS_ENQUEUE:
+ *
+ * It's used when policy functions are called from ldlm_lock_enqueue() to
+ * process the wait list for handling an enqueue request, blocking
+ * ASTs have not been sent yet, so list of conflicting locks would be
+ * collected and ASTs sent.
+ *
+ * LDLM_PROCESS_RECOVERY:
+ *
+ * It's used when policy functions are called from ldlm_reprocess_queue() to
+ * reprocess the wait list when recovery done. In case of blocking
+ * ASTs are lost before recovery, it needs not only to grant locks if
+ * available, but also send blocking ASTs to the locks doesn't have AST sent
+ * flag. Completion ASTs need be sent for the locks being granted.
+ */
+enum ldlm_process_intention {
+ LDLM_PROCESS_RESCAN = 0,
+ LDLM_PROCESS_ENQUEUE = 1,
+ LDLM_PROCESS_RECOVERY = 2,
+};
+
typedef int (*ldlm_processing_policy)(struct ldlm_lock *lock, __u64 *flags,
- int first_enq, ldlm_error_t *err,
+ enum ldlm_process_intention intention,
+ enum ldlm_error *err,
struct list_head *work_list);
+typedef int (*ldlm_reprocessing_policy)(struct ldlm_resource *res,
+ struct list_head *queue,
+ struct list_head *work_list,
+ enum ldlm_process_intention intention,
+ struct ldlm_lock *hint);
+
/**
* Return values for lock iterators.
* Also used during deciding of lock grants and cancellations.
/* ldlm_extent.c */
__u64 ldlm_extent_shift_kms(struct ldlm_lock *lock, __u64 old_kms);
+struct ldlm_prolong_args {
+ struct obd_export *lpa_export;
+ struct ldlm_res_id lpa_resid;
+ struct ldlm_extent lpa_extent;
+ enum ldlm_mode lpa_mode;
+ timeout_t lpa_timeout;
+ int lpa_locks_cnt;
+ int lpa_blocks_cnt;
+};
+void ldlm_lock_prolong_one(struct ldlm_lock *lock,
+ struct ldlm_prolong_args *arg);
+void ldlm_resource_prolong(struct ldlm_prolong_args *arg);
+
struct ldlm_callback_suite {
ldlm_completion_callback lcs_completion;
ldlm_blocking_callback lcs_blocking;
* MDT or OST to pass through LDLM requests to LDLM for handling
* @{
*/
-int ldlm_handle_enqueue(struct ptlrpc_request *req, ldlm_completion_callback,
- ldlm_blocking_callback, ldlm_glimpse_callback);
int ldlm_handle_enqueue0(struct ldlm_namespace *ns, struct ptlrpc_request *req,
- const struct ldlm_request *dlm_req,
- const struct ldlm_callback_suite *cbs);
-int ldlm_handle_convert(struct ptlrpc_request *req);
+ const struct ldlm_request *dlm_req,
+ const struct ldlm_callback_suite *cbs);
int ldlm_handle_convert0(struct ptlrpc_request *req,
- const struct ldlm_request *dlm_req);
+ const struct ldlm_request *dlm_req);
int ldlm_handle_cancel(struct ptlrpc_request *req);
int ldlm_request_cancel(struct ptlrpc_request *req,
const struct ldlm_request *dlm_req,
/** @} ldlm_handlers */
void ldlm_revoke_export_locks(struct obd_export *exp);
-unsigned int ldlm_bl_timeout(struct ldlm_lock *lock);
+timeout_t ldlm_bl_timeout(struct ldlm_lock *lock);
#endif
int ldlm_del_waiting_lock(struct ldlm_lock *lock);
-int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, int timeout);
+int ldlm_refresh_waiting_lock(struct ldlm_lock *lock, timeout_t timeout);
int ldlm_get_ref(void);
void ldlm_put_ref(void);
int ldlm_init_export(struct obd_export *exp);
/* ldlm_lock.c */
#ifdef HAVE_SERVER_SUPPORT
ldlm_processing_policy ldlm_get_processing_policy(struct ldlm_resource *res);
+ldlm_reprocessing_policy
+ldlm_get_reprocessing_policy(struct ldlm_resource *res);
#endif
void ldlm_register_intent(struct ldlm_namespace *ns, ldlm_res_policy arg);
void ldlm_lock2handle(const struct ldlm_lock *lock,
struct ldlm_lock *__ldlm_handle2lock(const struct lustre_handle *, __u64 flags);
void ldlm_cancel_callback(struct ldlm_lock *);
int ldlm_lock_remove_from_lru(struct ldlm_lock *);
-int ldlm_lock_set_data(struct lustre_handle *, void *);
+int ldlm_lock_set_data(const struct lustre_handle *lockh, void *data);
/**
* Obtain a lock reference by its handle.
* Update Lock Value Block Operations (LVBO) on a resource taking into account
* data from request \a r
*/
-static inline int ldlm_res_lvbo_update(struct ldlm_resource *res,
- struct ptlrpc_request *r, int increase)
+static inline int ldlm_lvbo_update(struct ldlm_resource *res,
+ struct ldlm_lock *lock,
+ struct ptlrpc_request *req, int increase)
{
+ struct ldlm_namespace *ns = ldlm_res_to_ns(res);
int rc;
/* delayed lvb init may be required */
return rc;
}
- if (ldlm_res_to_ns(res)->ns_lvbo &&
- ldlm_res_to_ns(res)->ns_lvbo->lvbo_update) {
- return ldlm_res_to_ns(res)->ns_lvbo->lvbo_update(res, r,
- increase);
- }
- return 0;
+ if (ns->ns_lvbo && ns->ns_lvbo->lvbo_update)
+ return ns->ns_lvbo->lvbo_update(res, lock, req, increase);
+
+ return 0;
+}
+
+static inline int ldlm_res_lvbo_update(struct ldlm_resource *res,
+ struct ptlrpc_request *req,
+ int increase)
+{
+ return ldlm_lvbo_update(res, NULL, req, increase);
}
-int ldlm_error2errno(ldlm_error_t error);
-ldlm_error_t ldlm_errno2error(int err_no); /* don't call it `errno': this
- * confuses user-space. */
+int is_granted_or_cancelled_nolock(struct ldlm_lock *lock);
+
+int ldlm_error2errno(enum ldlm_error error);
+enum ldlm_error ldlm_errno2error(int err_no); /* don't call it `errno': this
+ * confuses user-space. */
#if LUSTRE_TRACKS_LOCK_EXP_REFS
void ldlm_dump_export_locks(struct obd_export *exp);
#endif
void ldlm_lock_put(struct ldlm_lock *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);
-int ldlm_lock_addref_try(struct lustre_handle *lockh, __u32 mode);
-void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode);
-void ldlm_lock_decref_and_cancel(struct lustre_handle *lockh, __u32 mode);
+void ldlm_lock_addref(const struct lustre_handle *lockh, enum ldlm_mode mode);
+int ldlm_lock_addref_try(const struct lustre_handle *lockh,
+ enum ldlm_mode mode);
+void ldlm_lock_decref(const struct lustre_handle *lockh, enum ldlm_mode mode);
+void ldlm_lock_decref_and_cancel(const struct lustre_handle *lockh,
+ enum ldlm_mode mode);
void ldlm_lock_fail_match_locked(struct ldlm_lock *lock);
void ldlm_lock_fail_match(struct ldlm_lock *lock);
void ldlm_lock_allow_match(struct ldlm_lock *lock);
void ldlm_lock_allow_match_locked(struct ldlm_lock *lock);
-ldlm_mode_t ldlm_lock_match(struct ldlm_namespace *ns, __u64 flags,
- const struct ldlm_res_id *, ldlm_type_t type,
- ldlm_policy_data_t *, ldlm_mode_t mode,
- struct lustre_handle *, int unref);
-ldlm_mode_t ldlm_revalidate_lock_handle(struct lustre_handle *lockh,
- __u64 *bits);
-struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
- __u32 *flags);
-void ldlm_lock_downgrade(struct ldlm_lock *lock, int new_mode);
+enum ldlm_mode ldlm_lock_match_with_skip(struct ldlm_namespace *ns,
+ __u64 flags, __u64 skip_flags,
+ const struct ldlm_res_id *res_id,
+ enum ldlm_type type,
+ union ldlm_policy_data *policy,
+ enum ldlm_mode mode,
+ struct lustre_handle *lh,
+ int unref);
+static inline enum ldlm_mode ldlm_lock_match(struct ldlm_namespace *ns,
+ __u64 flags,
+ const struct ldlm_res_id *res_id,
+ enum ldlm_type type,
+ union ldlm_policy_data *policy,
+ enum ldlm_mode mode,
+ struct lustre_handle *lh,
+ int unref)
+{
+ return ldlm_lock_match_with_skip(ns, flags, 0, res_id, type, policy,
+ mode, lh, unref);
+}
+struct ldlm_lock *search_itree(struct ldlm_resource *res,
+ struct ldlm_match_data *data);
+enum ldlm_mode ldlm_revalidate_lock_handle(const struct lustre_handle *lockh,
+ __u64 *bits);
+void ldlm_lock_mode_downgrade(struct ldlm_lock *lock, enum ldlm_mode new_mode);
void ldlm_lock_cancel(struct ldlm_lock *lock);
-void ldlm_reprocess_all(struct ldlm_resource *res);
-void ldlm_reprocess_all_ns(struct ldlm_namespace *ns);
-void ldlm_lock_dump_handle(int level, struct lustre_handle *);
+void ldlm_reprocess_all(struct ldlm_resource *res, struct ldlm_lock *hint);
+void ldlm_reprocess_recovery_done(struct ldlm_namespace *ns);
+void ldlm_lock_dump_handle(int level, const struct lustre_handle *lockh);
void ldlm_unlink_lock_skiplist(struct ldlm_lock *req);
/* resource.c */
-struct ldlm_namespace *
-ldlm_namespace_new(struct obd_device *obd, char *name,
- ldlm_side_t client, ldlm_appetite_t apt,
- ldlm_ns_type_t ns_type);
+struct ldlm_namespace *ldlm_namespace_new(struct obd_device *obd, char *name,
+ enum ldlm_side client,
+ enum ldlm_appetite apt,
+ enum ldlm_ns_type ns_type);
int ldlm_namespace_cleanup(struct ldlm_namespace *ns, __u64 flags);
+void ldlm_namespace_free_prior(struct ldlm_namespace *ns,
+ struct obd_import *imp,
+ int force);
+void ldlm_namespace_free_post(struct ldlm_namespace *ns);
void ldlm_namespace_free(struct ldlm_namespace *ns,
- struct obd_import *imp, int force);
-void ldlm_namespace_register(struct ldlm_namespace *ns, ldlm_side_t client);
-void ldlm_namespace_unregister(struct ldlm_namespace *ns, ldlm_side_t client);
+ struct obd_import *imp, int force);
+void ldlm_namespace_register(struct ldlm_namespace *ns, enum ldlm_side client);
+void ldlm_namespace_unregister(struct ldlm_namespace *ns,
+ enum ldlm_side client);
void ldlm_namespace_get(struct ldlm_namespace *ns);
void ldlm_namespace_put(struct ldlm_namespace *ns);
-int ldlm_proc_setup(void);
-#ifdef CONFIG_PROC_FS
-void ldlm_proc_cleanup(void);
-#else
-static inline void ldlm_proc_cleanup(void) {}
-#endif
+
+int ldlm_debugfs_setup(void);
+void ldlm_debugfs_cleanup(void);
+
+static inline void ldlm_svc_get_eopc(const struct ldlm_request *dlm_req,
+ struct lprocfs_stats *srv_stats)
+{
+ int lock_type = 0, op = 0;
+
+ lock_type = dlm_req->lock_desc.l_resource.lr_type;
+
+ switch (lock_type) {
+ case LDLM_PLAIN:
+ op = PTLRPC_LAST_CNTR + LDLM_PLAIN_ENQUEUE;
+ break;
+ case LDLM_EXTENT:
+ op = PTLRPC_LAST_CNTR + LDLM_EXTENT_ENQUEUE;
+ break;
+ case LDLM_FLOCK:
+ op = PTLRPC_LAST_CNTR + LDLM_FLOCK_ENQUEUE;
+ break;
+ case LDLM_IBITS:
+ op = PTLRPC_LAST_CNTR + LDLM_IBITS_ENQUEUE;
+ break;
+ default:
+ op = 0;
+ break;
+ }
+
+ if (op != 0)
+ lprocfs_counter_incr(srv_stats, op);
+}
/* resource.c - internal */
struct ldlm_resource *ldlm_resource_get(struct ldlm_namespace *ns,
- struct ldlm_resource *parent,
- const struct ldlm_res_id *,
- ldlm_type_t type, int create);
+ struct ldlm_resource *parent,
+ const struct ldlm_res_id *,
+ enum ldlm_type type, int create);
struct ldlm_resource *ldlm_resource_getref(struct ldlm_resource *res);
int ldlm_resource_putref(struct ldlm_resource *res);
void ldlm_resource_add_lock(struct ldlm_resource *res,
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(ldlm_side_t client, int level);
+void ldlm_dump_all_namespaces(enum ldlm_side client, 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 *,
} while (0)
/* ldlm_request.c */
-int ldlm_expired_completion_wait(void *data);
/** \defgroup ldlm_local_ast Default AST handlers for local locks
* These AST handlers are typically used for server-side local locks and are
* also used by client-side lock handlers to perform minimum level base
* to obtain and release locks.
* @{ */
int ldlm_cli_enqueue(struct obd_export *exp, struct ptlrpc_request **reqp,
- struct ldlm_enqueue_info *einfo,
- const struct ldlm_res_id *res_id,
- ldlm_policy_data_t const *policy, __u64 *flags,
+ struct ldlm_enqueue_info *einfo,
+ const struct ldlm_res_id *res_id,
+ union ldlm_policy_data const *policy, __u64 *flags,
void *lvb, __u32 lvb_len, enum lvb_type lvb_type,
struct lustre_handle *lockh, int async);
int ldlm_prep_enqueue_req(struct obd_export *exp,
const struct ldlm_request *dlm_req,
const struct ldlm_callback_suite *cbs);
int ldlm_cli_enqueue_fini(struct obd_export *exp, struct ptlrpc_request *req,
- ldlm_type_t type, __u8 with_policy, ldlm_mode_t mode,
- __u64 *flags, void *lvb, __u32 lvb_len,
- struct lustre_handle *lockh, int rc);
-int ldlm_cli_enqueue_local(struct ldlm_namespace *ns,
- const struct ldlm_res_id *res_id,
- ldlm_type_t type, ldlm_policy_data_t *policy,
- ldlm_mode_t mode, __u64 *flags,
- ldlm_blocking_callback blocking,
- ldlm_completion_callback completion,
- ldlm_glimpse_callback glimpse,
+ enum ldlm_type type, __u8 with_policy,
+ enum ldlm_mode mode, __u64 *flags, void *lvb,
+ __u32 lvb_len,
+ const struct lustre_handle *lockh, int rc);
+int ldlm_cli_enqueue_local(const struct lu_env *env,
+ struct ldlm_namespace *ns,
+ const struct ldlm_res_id *res_id,
+ enum ldlm_type type, union ldlm_policy_data *policy,
+ enum ldlm_mode mode, __u64 *flags,
+ ldlm_blocking_callback blocking,
+ ldlm_completion_callback completion,
+ ldlm_glimpse_callback glimpse,
void *data, __u32 lvb_len, enum lvb_type lvb_type,
- const __u64 *client_cookie,
- 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, __u32 *flags);
+ const __u64 *client_cookie,
+ struct lustre_handle *lockh);
+int ldlm_cli_convert_req(struct ldlm_lock *lock, __u32 *flags, __u64 new_bits);
+int ldlm_cli_convert(struct ldlm_lock *lock,
+ enum ldlm_cancel_flags cancel_flags);
int ldlm_cli_update_pool(struct ptlrpc_request *req);
-int ldlm_cli_cancel(struct lustre_handle *lockh,
- ldlm_cancel_flags_t cancel_flags);
+int ldlm_cli_cancel(const struct lustre_handle *lockh,
+ enum ldlm_cancel_flags cancel_flags);
int ldlm_cli_cancel_unused(struct ldlm_namespace *, const struct ldlm_res_id *,
- ldlm_cancel_flags_t flags, void *opaque);
+ enum ldlm_cancel_flags flags, void *opaque);
int ldlm_cli_cancel_unused_resource(struct ldlm_namespace *ns,
- const struct ldlm_res_id *res_id,
- ldlm_policy_data_t *policy,
- ldlm_mode_t mode,
- ldlm_cancel_flags_t flags,
- void *opaque);
+ const struct ldlm_res_id *res_id,
+ union ldlm_policy_data *policy,
+ enum ldlm_mode mode,
+ enum ldlm_cancel_flags flags, void *opaque);
int ldlm_cli_cancel_req(struct obd_export *exp, struct list_head *head,
- int count, ldlm_cancel_flags_t flags);
+ int count, enum ldlm_cancel_flags flags);
int ldlm_cancel_resource_local(struct ldlm_resource *res,
struct list_head *cancels,
- ldlm_policy_data_t *policy,
- ldlm_mode_t mode, __u64 lock_flags,
- ldlm_cancel_flags_t cancel_flags, void *opaque);
+ union ldlm_policy_data *policy,
+ enum ldlm_mode mode, __u64 lock_flags,
+ enum ldlm_cancel_flags cancel_flags,
+ void *opaque);
int ldlm_cli_cancel_list_local(struct list_head *cancels, int count,
- ldlm_cancel_flags_t flags);
+ enum ldlm_cancel_flags flags);
int ldlm_cli_cancel_list(struct list_head *head, int count,
- struct ptlrpc_request *req, ldlm_cancel_flags_t flags);
+ struct ptlrpc_request *req,
+ enum ldlm_cancel_flags flags);
+
+int ldlm_inodebits_drop(struct ldlm_lock *lock, __u64 to_drop);
+int ldlm_cli_inodebits_convert(struct ldlm_lock *lock,
+ enum ldlm_cancel_flags cancel_flags);
+
/** @} ldlm_cli_api */
/* mds/handler.c */
* There are not used outside of ldlm.
* @{
*/
-int ldlm_pools_recalc(ldlm_side_t client);
int ldlm_pools_init(void);
void ldlm_pools_fini(void);
int ldlm_pool_init(struct ldlm_pool *pl, struct ldlm_namespace *ns,
- int idx, ldlm_side_t client);
+ int idx, enum ldlm_side client);
int ldlm_pool_shrink(struct ldlm_pool *pl, int nr, gfp_t gfp_mask);
void ldlm_pool_fini(struct ldlm_pool *pl);
int ldlm_pool_setup(struct ldlm_pool *pl, int limit);
-int ldlm_pool_recalc(struct ldlm_pool *pl);
+time64_t ldlm_pool_recalc(struct ldlm_pool *pl);
__u32 ldlm_pool_get_lvf(struct ldlm_pool *pl);
__u64 ldlm_pool_get_slv(struct ldlm_pool *pl);
__u64 ldlm_pool_get_clv(struct ldlm_pool *pl);
void ldlm_pool_del(struct ldlm_pool *pl, struct ldlm_lock *lock);
/** @} */
+static inline int ldlm_extent_overlap(const struct ldlm_extent *ex1,
+ const struct ldlm_extent *ex2)
+{
+ return ex1->start <= ex2->end && ex2->start <= ex1->end;
+}
+
+/* check if @ex1 contains @ex2 */
+static inline int ldlm_extent_contain(const struct ldlm_extent *ex1,
+ const struct ldlm_extent *ex2)
+{
+ return ex1->start <= ex2->start && ex1->end >= ex2->end;
+}
+
+int ldlm_inodebits_drop(struct ldlm_lock *lock, __u64 to_drop);
+
#endif
/** @} LDLM */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff