[deliverable/linux.git] / include / linux / ceph / osd_client.h

#ifndef _FS_CEPH_OSD_CLIENT_H
#define _FS_CEPH_OSD_CLIENT_H

#include <linux/completion.h>
#include <linux/kref.h>
#include <linux/mempool.h>
#include <linux/rbtree.h>

#include <linux/ceph/types.h>
#include <linux/ceph/osdmap.h>
#include <linux/ceph/messenger.h>
#include <linux/ceph/auth.h>
#include <linux/ceph/pagelist.h>

struct ceph_msg;
struct ceph_snap_context;
struct ceph_osd_request;
struct ceph_osd_client;

/*
 * completion callback for async writepages
 */
typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *);
typedef void (*ceph_osdc_unsafe_callback_t)(struct ceph_osd_request *, bool);

#define CEPH_HOMELESS_OSD	-1

/* a given osd we're communicating with */
struct ceph_osd {
	atomic_t o_ref;
	struct ceph_osd_client *o_osdc;
	int o_osd;
	int o_incarnation;
	struct rb_node o_node;
	struct ceph_connection o_con;
	struct list_head o_requests;
	struct list_head o_linger_requests;
	struct list_head o_osd_lru;
	struct ceph_auth_handshake o_auth;
	unsigned long lru_ttl;
	struct list_head o_keepalive_item;
};

#define CEPH_OSD_SLAB_OPS	2
#define CEPH_OSD_MAX_OPS	16

enum ceph_osd_data_type {
	CEPH_OSD_DATA_TYPE_NONE = 0,
	CEPH_OSD_DATA_TYPE_PAGES,
	CEPH_OSD_DATA_TYPE_PAGELIST,
#ifdef CONFIG_BLOCK
	CEPH_OSD_DATA_TYPE_BIO,
#endif /* CONFIG_BLOCK */
};

struct ceph_osd_data {
	enum ceph_osd_data_type	type;
	union {
		struct {
			struct page	**pages;
			u64		length;
			u32		alignment;
			bool		pages_from_pool;
			bool		own_pages;
		};
		struct ceph_pagelist	*pagelist;
#ifdef CONFIG_BLOCK
		struct {
			struct bio	*bio;		/* list of bios */
			size_t		bio_length;	/* total in list */
		};
#endif /* CONFIG_BLOCK */
	};
};

struct ceph_osd_req_op {
	u16 op;           /* CEPH_OSD_OP_* */
	u32 flags;        /* CEPH_OSD_OP_FLAG_* */
	u32 indata_len;   /* request */
	u32 outdata_len;  /* reply */
	s32 rval;

	union {
		struct ceph_osd_data raw_data_in;
		struct {
			u64 offset, length;
			u64 truncate_size;
			u32 truncate_seq;
			struct ceph_osd_data osd_data;
		} extent;
		struct {
			u32 name_len;
			u32 value_len;
			__u8 cmp_op;       /* CEPH_OSD_CMPXATTR_OP_* */
			__u8 cmp_mode;     /* CEPH_OSD_CMPXATTR_MODE_* */
			struct ceph_osd_data osd_data;
		} xattr;
		struct {
			const char *class_name;
			const char *method_name;
			struct ceph_osd_data request_info;
			struct ceph_osd_data request_data;
			struct ceph_osd_data response_data;
			__u8 class_len;
			__u8 method_len;
			u32 indata_len;
		} cls;
		struct {
			u64 cookie;
			u64 ver;
			u32 prot_ver;
			u32 timeout;
			__u8 flag;
		} watch;
		struct {
			u64 expected_object_size;
			u64 expected_write_size;
		} alloc_hint;
	};
};

struct ceph_osd_request_target {
	struct ceph_object_id base_oid;
	struct ceph_object_locator base_oloc;
	struct ceph_object_id target_oid;
	struct ceph_object_locator target_oloc;

	struct ceph_pg pgid;
	u32 pg_num;
	u32 pg_num_mask;
	struct ceph_osds acting;
	struct ceph_osds up;
	int size;
	int min_size;
	bool sort_bitwise;

	unsigned int flags;                /* CEPH_OSD_FLAG_* */
	bool paused;

	int osd;
};

/* an in-flight request */
struct ceph_osd_request {
	u64             r_tid;              /* unique for this client */
	struct rb_node  r_node;
	struct list_head r_req_lru_item;
	struct list_head r_osd_item;
	struct list_head r_linger_item;
	struct list_head r_linger_osd_item;
	struct ceph_osd *r_osd;

	struct ceph_osd_request_target r_t;
#define r_base_oid	r_t.base_oid
#define r_base_oloc	r_t.base_oloc
#define r_flags		r_t.flags

	struct ceph_msg  *r_request, *r_reply;
	u32               r_sent;      /* >0 if r_request is sending/sent */

	/* request osd ops array  */
	unsigned int		r_num_ops;

	int               r_result;
	bool              r_got_reply;
	int		  r_linger;

	struct ceph_osd_client *r_osdc;
	struct kref       r_kref;
	bool              r_mempool;
	struct completion r_completion;
	struct completion r_safe_completion;  /* fsync waiter */
	ceph_osdc_callback_t r_callback;
	ceph_osdc_unsafe_callback_t r_unsafe_callback;
	struct list_head  r_unsafe_item;

	struct inode *r_inode;         	      /* for use by callbacks */
	void *r_priv;			      /* ditto */

	/* set by submitter */
	u64 r_snapid;                         /* for reads, CEPH_NOSNAP o/w */
	struct ceph_snap_context *r_snapc;    /* for writes */
	struct timespec r_mtime;              /* ditto */
	u64 r_data_offset;                    /* ditto */

	/* internal */
	unsigned long r_stamp;                /* jiffies, send or check time */
	int r_attempts;
	struct ceph_eversion r_replay_version; /* aka reassert_version */
	u32 r_last_force_resend;

	struct ceph_osd_req_op r_ops[];
};

struct ceph_request_redirect {
	struct ceph_object_locator oloc;
};

struct ceph_osd_event {
	u64 cookie;
	int one_shot;
	struct ceph_osd_client *osdc;
	void (*cb)(u64, u64, u8, void *);
	void *data;
	struct rb_node node;
	struct list_head osd_node;
	struct kref kref;
};

struct ceph_osd_event_work {
	struct work_struct work;
	struct ceph_osd_event *event;
        u64 ver;
        u64 notify_id;
        u8 opcode;
};

struct ceph_osd_client {
	struct ceph_client     *client;

	struct ceph_osdmap     *osdmap;       /* current map */
	struct rw_semaphore    map_sem;

	struct mutex           request_mutex;
	struct rb_root         osds;          /* osds */
	struct list_head       osd_lru;       /* idle osds */
	u64                    last_tid;      /* tid of last request */
	struct rb_root         requests;      /* pending requests */
	struct list_head       req_lru;	      /* in-flight lru */
	struct list_head       req_unsent;    /* unsent/need-resend queue */
	struct list_head       req_notarget;  /* map to no osd */
	struct list_head       req_linger;    /* lingering requests */
	int                    num_requests;
	struct delayed_work    timeout_work;
	struct delayed_work    osds_timeout_work;
#ifdef CONFIG_DEBUG_FS
	struct dentry 	       *debugfs_file;
#endif

	mempool_t              *req_mempool;

	struct ceph_msgpool	msgpool_op;
	struct ceph_msgpool	msgpool_op_reply;

	spinlock_t		event_lock;
	struct rb_root		event_tree;
	u64			event_count;

	struct workqueue_struct	*notify_wq;
};

extern int ceph_osdc_setup(void);
extern void ceph_osdc_cleanup(void);

extern int ceph_osdc_init(struct ceph_osd_client *osdc,
			  struct ceph_client *client);
extern void ceph_osdc_stop(struct ceph_osd_client *osdc);

extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
				   struct ceph_msg *msg);
extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
				 struct ceph_msg *msg);

extern void osd_req_op_init(struct ceph_osd_request *osd_req,
			    unsigned int which, u16 opcode, u32 flags);

extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
					unsigned int which,
					struct page **pages, u64 length,
					u32 alignment, bool pages_from_pool,
					bool own_pages);

extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
					unsigned int which, u16 opcode,
					u64 offset, u64 length,
					u64 truncate_size, u32 truncate_seq);
extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
					unsigned int which, u64 length);
extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
				       unsigned int which, u64 offset_inc);

extern struct ceph_osd_data *osd_req_op_extent_osd_data(
					struct ceph_osd_request *osd_req,
					unsigned int which);

extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
					unsigned int which,
					struct page **pages, u64 length,
					u32 alignment, bool pages_from_pool,
					bool own_pages);
extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
					unsigned int which,
					struct ceph_pagelist *pagelist);
#ifdef CONFIG_BLOCK
extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
					unsigned int which,
					struct bio *bio, size_t bio_length);
#endif /* CONFIG_BLOCK */

extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
					unsigned int which,
					struct ceph_pagelist *pagelist);
extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
					unsigned int which,
					struct page **pages, u64 length,
					u32 alignment, bool pages_from_pool,
					bool own_pages);
extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
					unsigned int which,
					struct page **pages, u64 length,
					u32 alignment, bool pages_from_pool,
					bool own_pages);

extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
					unsigned int which, u16 opcode,
					const char *class, const char *method);
extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
				 u16 opcode, const char *name, const void *value,
				 size_t size, u8 cmp_op, u8 cmp_mode);
extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
					unsigned int which, u16 opcode,
					u64 cookie, u64 version, int flag);
extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
				       unsigned int which,
				       u64 expected_object_size,
				       u64 expected_write_size);

extern struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
					       struct ceph_snap_context *snapc,
					       unsigned int num_ops,
					       bool use_mempool,
					       gfp_t gfp_flags);
int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp);

extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
				      struct ceph_file_layout *layout,
				      struct ceph_vino vino,
				      u64 offset, u64 *len,
				      unsigned int which, int num_ops,
				      int opcode, int flags,
				      struct ceph_snap_context *snapc,
				      u32 truncate_seq, u64 truncate_size,
				      bool use_mempool);

extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
					 struct ceph_osd_request *req);

extern void ceph_osdc_get_request(struct ceph_osd_request *req);
extern void ceph_osdc_put_request(struct ceph_osd_request *req);

extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
				   struct ceph_osd_request *req,
				   bool nofail);
extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
				  struct ceph_osd_request *req);
extern void ceph_osdc_sync(struct ceph_osd_client *osdc);

extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);

extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
			       struct ceph_vino vino,
			       struct ceph_file_layout *layout,
			       u64 off, u64 *plen,
			       u32 truncate_seq, u64 truncate_size,
			       struct page **pages, int nr_pages,
			       int page_align);

extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
				struct ceph_vino vino,
				struct ceph_file_layout *layout,
				struct ceph_snap_context *sc,
				u64 off, u64 len,
				u32 truncate_seq, u64 truncate_size,
				struct timespec *mtime,
				struct page **pages, int nr_pages);

/* watch/notify events */
extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
				  void (*event_cb)(u64, u64, u8, void *),
				  void *data, struct ceph_osd_event **pevent);
extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
extern void ceph_osdc_put_event(struct ceph_osd_event *event);
#endif
Commit	Line	Data
f24e9980 SW	1	#ifndef _FS_CEPH_OSD_CLIENT_H
	2	#define _FS_CEPH_OSD_CLIENT_H
	3
	4	#include <linux/completion.h>
415e49a9	5	#include <linux/kref.h>
f24e9980 SW	6	#include <linux/mempool.h>
	7	#include <linux/rbtree.h>
	8
6c4a1915 AE	9	#include <linux/ceph/types.h>
	10	#include <linux/ceph/osdmap.h>
	11	#include <linux/ceph/messenger.h>
	12	#include <linux/ceph/auth.h>
c885837f	13	#include <linux/ceph/pagelist.h>
f24e9980 SW	14
	15	struct ceph_msg;
	16	struct ceph_snap_context;
	17	struct ceph_osd_request;
	18	struct ceph_osd_client;
	19
	20	/*
	21	* completion callback for async writepages
	22	*/
85e084fe	23	typedef void (ceph_osdc_callback_t)(struct ceph_osd_request );
26be8808	24	typedef void (ceph_osdc_unsafe_callback_t)(struct ceph_osd_request , bool);
f24e9980	25
63244fa1 ID	26	#define CEPH_HOMELESS_OSD -1
63244fa1 ID	27
f24e9980 SW	28	/* a given osd we're communicating with */
	29	struct ceph_osd {
	30	atomic_t o_ref;
	31	struct ceph_osd_client *o_osdc;
	32	int o_osd;
	33	int o_incarnation;
	34	struct rb_node o_node;
	35	struct ceph_connection o_con;
	36	struct list_head o_requests;
a40c4f10	37	struct list_head o_linger_requests;
f5a2041b	38	struct list_head o_osd_lru;
6c4a1915	39	struct ceph_auth_handshake o_auth;
f5a2041b	40	unsigned long lru_ttl;
422d2cb8	41	struct list_head o_keepalive_item;
f24e9980 SW	42	};
f24e9980 SW	43
3f1af42a ID	44	#define CEPH_OSD_SLAB_OPS 2
3f1af42a ID	45	#define CEPH_OSD_MAX_OPS 16
1b83bef2	46
2ac2b7a6	47	enum ceph_osd_data_type {
ec9123c5	48	CEPH_OSD_DATA_TYPE_NONE = 0,
2ac2b7a6	49	CEPH_OSD_DATA_TYPE_PAGES,
9a5e6d09	50	CEPH_OSD_DATA_TYPE_PAGELIST,
2ac2b7a6 AE	51	#ifdef CONFIG_BLOCK
	52	CEPH_OSD_DATA_TYPE_BIO,
	53	#endif /* CONFIG_BLOCK */
	54	};
	55
2794a82a	56	struct ceph_osd_data {
2ac2b7a6 AE	57	enum ceph_osd_data_type type;
2ac2b7a6 AE	58	union {
2794a82a AE	59	struct {
2794a82a AE	60	struct page **pages;
e0c59487	61	u64 length;
2794a82a AE	62	u32 alignment;
	63	bool pages_from_pool;
	64	bool own_pages;
	65	};
9a5e6d09	66	struct ceph_pagelist *pagelist;
2794a82a	67	#ifdef CONFIG_BLOCK
fdce58cc AE	68	struct {
	69	struct bio bio; / list of bios */
	70	size_t bio_length; /* total in list */
	71	};
2794a82a AE	72	#endif /* CONFIG_BLOCK */
	73	};
	74	};
	75
79528734 AE	76	struct ceph_osd_req_op {
79528734 AE	77	u16 op; /* CEPH_OSD_OP_* */
7b25bf5f	78	u32 flags; /* CEPH_OSD_OP_FLAG_* */
de2aa102	79	u32 indata_len; /* request */
7665d85b YZ	80	u32 outdata_len; /* reply */
	81	s32 rval;
	82
79528734	83	union {
49719778	84	struct ceph_osd_data raw_data_in;
79528734 AE	85	struct {
	86	u64 offset, length;
	87	u64 truncate_size;
	88	u32 truncate_seq;
5476492f	89	struct ceph_osd_data osd_data;
79528734	90	} extent;
d74b50be	91	struct {
d7d5a007 ID	92	u32 name_len;
d7d5a007 ID	93	u32 value_len;
d74b50be YZ	94	__u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
	95	__u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
	96	struct ceph_osd_data osd_data;
	97	} xattr;
79528734 AE	98	struct {
	99	const char *class_name;
	100	const char *method_name;
5476492f	101	struct ceph_osd_data request_info;
04017e29	102	struct ceph_osd_data request_data;
5476492f	103	struct ceph_osd_data response_data;
79528734 AE	104	__u8 class_len;
79528734 AE	105	__u8 method_len;
bb873b53	106	u32 indata_len;
79528734 AE	107	} cls;
	108	struct {
	109	u64 cookie;
	110	u64 ver;
	111	u32 prot_ver;
	112	u32 timeout;
	113	__u8 flag;
	114	} watch;
c647b8a8 ID	115	struct {
	116	u64 expected_object_size;
	117	u64 expected_write_size;
	118	} alloc_hint;
79528734 AE	119	};
	120	};
	121
63244fa1 ID	122	struct ceph_osd_request_target {
	123	struct ceph_object_id base_oid;
	124	struct ceph_object_locator base_oloc;
	125	struct ceph_object_id target_oid;
	126	struct ceph_object_locator target_oloc;
	127
	128	struct ceph_pg pgid;
	129	u32 pg_num;
	130	u32 pg_num_mask;
	131	struct ceph_osds acting;
	132	struct ceph_osds up;
	133	int size;
	134	int min_size;
	135	bool sort_bitwise;
	136
	137	unsigned int flags; /* CEPH_OSD_FLAG_* */
	138	bool paused;
	139
	140	int osd;
	141	};
	142
f24e9980 SW	143	/* an in-flight request */
	144	struct ceph_osd_request {
	145	u64 r_tid; /* unique for this client */
	146	struct rb_node r_node;
422d2cb8	147	struct list_head r_req_lru_item;
f24e9980	148	struct list_head r_osd_item;
a40c4f10	149	struct list_head r_linger_item;
1d0326b1	150	struct list_head r_linger_osd_item;
f24e9980	151	struct ceph_osd *r_osd;
a66dd383 ID	152
	153	struct ceph_osd_request_target r_t;
	154	#define r_base_oid r_t.base_oid
	155	#define r_base_oloc r_t.base_oloc
	156	#define r_flags r_t.flags
f24e9980 SW	157
f24e9980 SW	158	struct ceph_msg r_request, r_reply;
f24e9980	159	u32 r_sent; /* >0 if r_request is sending/sent */
1b83bef2	160
79528734 AE	161	/* request osd ops array */
79528734 AE	162	unsigned int r_num_ops;
79528734	163
1b83bef2	164	int r_result;
fe5da05e	165	bool r_got_reply;
a40c4f10	166	int r_linger;
f24e9980 SW	167
f24e9980 SW	168	struct ceph_osd_client *r_osdc;
415e49a9	169	struct kref r_kref;
f24e9980	170	bool r_mempool;
fe5da05e ID	171	struct completion r_completion;
fe5da05e ID	172	struct completion r_safe_completion; /* fsync waiter */
26be8808 AE	173	ceph_osdc_callback_t r_callback;
26be8808 AE	174	ceph_osdc_unsafe_callback_t r_unsafe_callback;
f24e9980 SW	175	struct list_head r_unsafe_item;
	176
	177	struct inode r_inode; / for use by callbacks */
3d14c5d2	178	void r_priv; / ditto */
f24e9980	179
bb873b53 ID	180	/* set by submitter */
	181	u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */
	182	struct ceph_snap_context r_snapc; / for writes */
	183	struct timespec r_mtime; /* ditto */
	184	u64 r_data_offset; /* ditto */
f24e9980	185
bb873b53 ID	186	/* internal */
	187	unsigned long r_stamp; /* jiffies, send or check time */
	188	int r_attempts;
	189	struct ceph_eversion r_replay_version; /* aka reassert_version */
	190	u32 r_last_force_resend;
3f1af42a ID	191
3f1af42a ID	192	struct ceph_osd_req_op r_ops[];
f24e9980 SW	193	};
f24e9980 SW	194
205ee118 ID	195	struct ceph_request_redirect {
	196	struct ceph_object_locator oloc;
	197	};
	198
a40c4f10 YS	199	struct ceph_osd_event {
	200	u64 cookie;
	201	int one_shot;
	202	struct ceph_osd_client *osdc;
	203	void (cb)(u64, u64, u8, void );
	204	void *data;
	205	struct rb_node node;
	206	struct list_head osd_node;
	207	struct kref kref;
a40c4f10 YS	208	};
	209
	210	struct ceph_osd_event_work {
	211	struct work_struct work;
	212	struct ceph_osd_event *event;
	213	u64 ver;
	214	u64 notify_id;
	215	u8 opcode;
	216	};
	217
f24e9980 SW	218	struct ceph_osd_client {
	219	struct ceph_client *client;
	220
	221	struct ceph_osdmap osdmap; / current map */
	222	struct rw_semaphore map_sem;
f24e9980 SW	223
	224	struct mutex request_mutex;
	225	struct rb_root osds; /* osds */
f5a2041b	226	struct list_head osd_lru; /* idle osds */
f24e9980 SW	227	u64 last_tid; /* tid of last request */
f24e9980 SW	228	struct rb_root requests; /* pending requests */
6f6c7006 SW	229	struct list_head req_lru; /* in-flight lru */
	230	struct list_head req_unsent; /* unsent/need-resend queue */
	231	struct list_head req_notarget; /* map to no osd */
a40c4f10	232	struct list_head req_linger; /* lingering requests */
f24e9980 SW	233	int num_requests;
f24e9980 SW	234	struct delayed_work timeout_work;
f5a2041b	235	struct delayed_work osds_timeout_work;
039934b8	236	#ifdef CONFIG_DEBUG_FS
f24e9980	237	struct dentry *debugfs_file;
039934b8	238	#endif
f24e9980 SW	239
	240	mempool_t *req_mempool;
	241
0d59ab81	242	struct ceph_msgpool msgpool_op;
c16e7869	243	struct ceph_msgpool msgpool_op_reply;
a40c4f10 YS	244
	245	spinlock_t event_lock;
	246	struct rb_root event_tree;
	247	u64 event_count;
	248
	249	struct workqueue_struct *notify_wq;
f24e9980 SW	250	};
f24e9980 SW	251
5522ae0b AE	252	extern int ceph_osdc_setup(void);
	253	extern void ceph_osdc_cleanup(void);
	254
f24e9980 SW	255	extern int ceph_osdc_init(struct ceph_osd_client *osdc,
	256	struct ceph_client *client);
	257	extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
	258
	259	extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
	260	struct ceph_msg *msg);
	261	extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
	262	struct ceph_msg *msg);
	263
49719778	264	extern void osd_req_op_init(struct ceph_osd_request *osd_req,
144cba14	265	unsigned int which, u16 opcode, u32 flags);
49719778 AE	266
	267	extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
	268	unsigned int which,
	269	struct page **pages, u64 length,
	270	u32 alignment, bool pages_from_pool,
	271	bool own_pages);
	272
c99d2d4a AE	273	extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	274	unsigned int which, u16 opcode,
33803f33 AE	275	u64 offset, u64 length,
33803f33 AE	276	u64 truncate_size, u32 truncate_seq);
c99d2d4a AE	277	extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
c99d2d4a AE	278	unsigned int which, u64 length);
2c63f49a YZ	279	extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
2c63f49a YZ	280	unsigned int which, u64 offset_inc);
a4ce40a9 AE	281
	282	extern struct ceph_osd_data *osd_req_op_extent_osd_data(
	283	struct ceph_osd_request *osd_req,
406e2c9f	284	unsigned int which);
a4ce40a9 AE	285
a4ce40a9 AE	286	extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
406e2c9f	287	unsigned int which,
a4ce40a9 AE	288	struct page **pages, u64 length,
	289	u32 alignment, bool pages_from_pool,
	290	bool own_pages);
	291	extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
406e2c9f	292	unsigned int which,
a4ce40a9 AE	293	struct ceph_pagelist *pagelist);
	294	#ifdef CONFIG_BLOCK
	295	extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
406e2c9f	296	unsigned int which,
a4ce40a9 AE	297	struct bio *bio, size_t bio_length);
	298	#endif /* CONFIG_BLOCK */
	299
04017e29 AE	300	extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
	301	unsigned int which,
	302	struct ceph_pagelist *pagelist);
6c57b554 AE	303	extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
	304	unsigned int which,
	305	struct page **pages, u64 length,
	306	u32 alignment, bool pages_from_pool,
	307	bool own_pages);
a4ce40a9	308	extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
c99d2d4a	309	unsigned int which,
a4ce40a9 AE	310	struct page **pages, u64 length,
	311	u32 alignment, bool pages_from_pool,
	312	bool own_pages);
	313
c99d2d4a AE	314	extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	315	unsigned int which, u16 opcode,
04017e29	316	const char class, const char method);
d74b50be YZ	317	extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
	318	u16 opcode, const char name, const void value,
	319	size_t size, u8 cmp_op, u8 cmp_mode);
c99d2d4a AE	320	extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	321	unsigned int which, u16 opcode,
33803f33	322	u64 cookie, u64 version, int flag);
c647b8a8 ID	323	extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
	324	unsigned int which,
	325	u64 expected_object_size,
	326	u64 expected_write_size);
33803f33	327
3499e8a5	328	extern struct ceph_osd_request ceph_osdc_alloc_request(struct ceph_osd_client osdc,
3499e8a5	329	struct ceph_snap_context *snapc,
acead002	330	unsigned int num_ops,
3499e8a5	331	bool use_mempool,
54a54007	332	gfp_t gfp_flags);
13d1ad16	333	int ceph_osdc_alloc_messages(struct ceph_osd_request *req, gfp_t gfp);
3499e8a5	334
f24e9980 SW	335	extern struct ceph_osd_request ceph_osdc_new_request(struct ceph_osd_client ,
	336	struct ceph_file_layout *layout,
	337	struct ceph_vino vino,
acead002	338	u64 offset, u64 *len,
715e4cd4 YZ	339	unsigned int which, int num_ops,
715e4cd4 YZ	340	int opcode, int flags,
f24e9980	341	struct ceph_snap_context *snapc,
acead002	342	u32 truncate_seq, u64 truncate_size,
153e5167	343	bool use_mempool);
f24e9980	344
a40c4f10 YS	345	extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
a40c4f10 YS	346	struct ceph_osd_request *req);
a40c4f10	347
9e94af20 ID	348	extern void ceph_osdc_get_request(struct ceph_osd_request *req);
9e94af20 ID	349	extern void ceph_osdc_put_request(struct ceph_osd_request *req);
f24e9980 SW	350
	351	extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
	352	struct ceph_osd_request *req,
	353	bool nofail);
c9f9b93d	354	extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
f24e9980 SW	355	extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
	356	struct ceph_osd_request *req);
	357	extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
	358
dd935f44 JD	359	extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
dd935f44 JD	360
f24e9980 SW	361	extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
	362	struct ceph_vino vino,
	363	struct ceph_file_layout *layout,
	364	u64 off, u64 *plen,
	365	u32 truncate_seq, u64 truncate_size,
b7495fc2 SW	366	struct page **pages, int nr_pages,
b7495fc2 SW	367	int page_align);
f24e9980 SW	368
	369	extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
	370	struct ceph_vino vino,
	371	struct ceph_file_layout *layout,
	372	struct ceph_snap_context *sc,
	373	u64 off, u64 len,
	374	u32 truncate_seq, u64 truncate_size,
	375	struct timespec *mtime,
24808826	376	struct page **pages, int nr_pages);
f24e9980	377
a40c4f10 YS	378	/* watch/notify events */
	379	extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
	380	void (event_cb)(u64, u64, u8, void ),
3c663bbd	381	void data, struct ceph_osd_event *pevent);
a40c4f10	382	extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
a40c4f10	383	extern void ceph_osdc_put_event(struct ceph_osd_event *event);
f24e9980 SW	384	#endif
f24e9980 SW	385