[linux-2.6-block.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;
struct ceph_authorizer;

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

/* 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;
	int o_marked_for_keepalive;
	struct list_head o_keepalive_item;
};


#define CEPH_OSD_MAX_OP	2

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 payload_len;
	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 {
			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;
			__u8 argc;
		} cls;
		struct {
			u64 cookie;
			u64 ver;
			u32 prot_ver;
			u32 timeout;
			__u8 flag;
		} watch;
	};
};

/* 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;
	struct ceph_osd *r_osd;
	struct ceph_pg   r_pgid;
	int              r_pg_osds[CEPH_PG_MAX_SIZE];
	int              r_num_pg_osds;

	struct ceph_msg  *r_request, *r_reply;
	int               r_flags;     /* any additional flags for the osd */
	u32               r_sent;      /* >0 if r_request is sending/sent */

	/* request osd ops array  */
	unsigned int		r_num_ops;
	struct ceph_osd_req_op	r_ops[CEPH_OSD_MAX_OP];

	/* these are updated on each send */
	__le32           *r_request_osdmap_epoch;
	__le32           *r_request_flags;
	__le64           *r_request_pool;
	void             *r_request_pgid;
	__le32           *r_request_attempts;
	bool              r_paused;
	struct ceph_eversion *r_request_reassert_version;

	int               r_result;
	int               r_reply_op_len[CEPH_OSD_MAX_OP];
	s32               r_reply_op_result[CEPH_OSD_MAX_OP];
	int               r_got_reply;
	int		  r_linger;

	struct ceph_osd_client *r_osdc;
	struct kref       r_kref;
	bool              r_mempool;
	struct completion r_completion, r_safe_completion;
	ceph_osdc_callback_t r_callback;
	ceph_osdc_unsafe_callback_t r_unsafe_callback;
	struct ceph_eversion r_reassert_version;
	struct list_head  r_unsafe_item;

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

	struct ceph_object_locator r_base_oloc;
	struct ceph_object_id r_base_oid;
	struct ceph_object_locator r_target_oloc;
	struct ceph_object_id r_target_oid;

	u64               r_snapid;
	unsigned long     r_stamp;            /* send OR check time */

	struct ceph_snap_context *r_snapc;    /* snap context for writes */
};

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 completion      map_waiters;
	u64                    last_requested_map;

	struct mutex           request_mutex;
	struct rb_root         osds;          /* osds */
	struct list_head       osd_lru;       /* idle osds */
	u64                    timeout_tid;   /* tid of timeout triggering rq */
	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);

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 struct ceph_osd_data *osd_req_op_extent_osd_data(
					struct ceph_osd_request *osd_req,
					unsigned int which);
extern struct ceph_osd_data *osd_req_op_cls_response_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 void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
					unsigned int which, u16 opcode,
					u64 cookie, u64 version, int flag);

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);

extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
				    struct ceph_snap_context *snapc,
				    u64 snap_id,
				    struct timespec *mtime);

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,
				      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_unregister_linger_request(struct ceph_osd_client *osdc,
						struct ceph_osd_request *req);

static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
{
	kref_get(&req->r_kref);
}
extern void ceph_osdc_release_request(struct kref *kref);
static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
{
	kref_put(&req->r_kref, ceph_osdc_release_request);
}

extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
				   struct ceph_osd_request *req,
				   bool nofail);
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;
4e7a5dcd	19	struct ceph_authorizer;
f24e9980 SW	20
	21	/*
	22	* completion callback for async writepages
	23	*/
	24	typedef void (ceph_osdc_callback_t)(struct ceph_osd_request ,
	25	struct ceph_msg *);
26be8808	26	typedef void (ceph_osdc_unsafe_callback_t)(struct ceph_osd_request , bool);
f24e9980 SW	27
	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 YS	41	int o_marked_for_keepalive;
422d2cb8 YS	42	struct list_head o_keepalive_item;
f24e9980 SW	43	};
f24e9980 SW	44
1b83bef2	45
79528734	46	#define CEPH_OSD_MAX_OP 2
1b83bef2	47
2ac2b7a6	48	enum ceph_osd_data_type {
ec9123c5	49	CEPH_OSD_DATA_TYPE_NONE = 0,
2ac2b7a6	50	CEPH_OSD_DATA_TYPE_PAGES,
9a5e6d09	51	CEPH_OSD_DATA_TYPE_PAGELIST,
2ac2b7a6 AE	52	#ifdef CONFIG_BLOCK
	53	CEPH_OSD_DATA_TYPE_BIO,
	54	#endif /* CONFIG_BLOCK */
	55	};
	56
2794a82a	57	struct ceph_osd_data {
2ac2b7a6 AE	58	enum ceph_osd_data_type type;
2ac2b7a6 AE	59	union {
2794a82a AE	60	struct {
2794a82a AE	61	struct page **pages;
e0c59487	62	u64 length;
2794a82a AE	63	u32 alignment;
	64	bool pages_from_pool;
	65	bool own_pages;
	66	};
9a5e6d09	67	struct ceph_pagelist *pagelist;
2794a82a	68	#ifdef CONFIG_BLOCK
fdce58cc AE	69	struct {
	70	struct bio bio; / list of bios */
	71	size_t bio_length; /* total in list */
	72	};
2794a82a AE	73	#endif /* CONFIG_BLOCK */
	74	};
	75	};
	76
79528734 AE	77	struct ceph_osd_req_op {
79528734 AE	78	u16 op; /* CEPH_OSD_OP_* */
7b25bf5f	79	u32 flags; /* CEPH_OSD_OP_FLAG_* */
79528734 AE	80	u32 payload_len;
79528734 AE	81	union {
49719778	82	struct ceph_osd_data raw_data_in;
79528734 AE	83	struct {
	84	u64 offset, length;
	85	u64 truncate_size;
	86	u32 truncate_seq;
5476492f	87	struct ceph_osd_data osd_data;
79528734 AE	88	} extent;
	89	struct {
	90	const char *class_name;
	91	const char *method_name;
5476492f	92	struct ceph_osd_data request_info;
04017e29	93	struct ceph_osd_data request_data;
5476492f	94	struct ceph_osd_data response_data;
79528734 AE	95	__u8 class_len;
	96	__u8 method_len;
	97	__u8 argc;
	98	} cls;
	99	struct {
	100	u64 cookie;
	101	u64 ver;
	102	u32 prot_ver;
	103	u32 timeout;
	104	__u8 flag;
	105	} watch;
	106	};
	107	};
	108
f24e9980 SW	109	/* an in-flight request */
	110	struct ceph_osd_request {
	111	u64 r_tid; /* unique for this client */
	112	struct rb_node r_node;
422d2cb8	113	struct list_head r_req_lru_item;
f24e9980	114	struct list_head r_osd_item;
a40c4f10 YS	115	struct list_head r_linger_item;
a40c4f10 YS	116	struct list_head r_linger_osd;
f24e9980	117	struct ceph_osd *r_osd;
5b191d99	118	struct ceph_pg r_pgid;
d85b7056 SW	119	int r_pg_osds[CEPH_PG_MAX_SIZE];
d85b7056 SW	120	int r_num_pg_osds;
f24e9980 SW	121
f24e9980 SW	122	struct ceph_msg r_request, r_reply;
f24e9980 SW	123	int r_flags; /* any additional flags for the osd */
f24e9980 SW	124	u32 r_sent; /* >0 if r_request is sending/sent */
1b83bef2	125
79528734 AE	126	/* request osd ops array */
	127	unsigned int r_num_ops;
	128	struct ceph_osd_req_op r_ops[CEPH_OSD_MAX_OP];
	129
1b83bef2 SW	130	/* these are updated on each send */
	131	__le32 *r_request_osdmap_epoch;
	132	__le32 *r_request_flags;
	133	__le64 *r_request_pool;
	134	void *r_request_pgid;
	135	__le32 *r_request_attempts;
d29adb34	136	bool r_paused;
1b83bef2 SW	137	struct ceph_eversion *r_request_reassert_version;
	138
	139	int r_result;
	140	int r_reply_op_len[CEPH_OSD_MAX_OP];
	141	s32 r_reply_op_result[CEPH_OSD_MAX_OP];
350b1c32	142	int r_got_reply;
a40c4f10	143	int r_linger;
f24e9980 SW	144
f24e9980 SW	145	struct ceph_osd_client *r_osdc;
415e49a9	146	struct kref r_kref;
f24e9980 SW	147	bool r_mempool;
f24e9980 SW	148	struct completion r_completion, r_safe_completion;
26be8808 AE	149	ceph_osdc_callback_t r_callback;
26be8808 AE	150	ceph_osdc_unsafe_callback_t r_unsafe_callback;
f24e9980 SW	151	struct ceph_eversion r_reassert_version;
	152	struct list_head r_unsafe_item;
	153
	154	struct inode r_inode; / for use by callbacks */
3d14c5d2	155	void r_priv; / ditto */
f24e9980	156
3c972c95 ID	157	struct ceph_object_locator r_base_oloc;
3c972c95 ID	158	struct ceph_object_id r_base_oid;
205ee118 ID	159	struct ceph_object_locator r_target_oloc;
205ee118 ID	160	struct ceph_object_id r_target_oid;
22116525	161
2169aea6	162	u64 r_snapid;
3dd72fc0	163	unsigned long r_stamp; /* send OR check time */
f24e9980	164
f24e9980	165	struct ceph_snap_context r_snapc; / snap context for writes */
f24e9980 SW	166	};
f24e9980 SW	167
205ee118 ID	168	struct ceph_request_redirect {
	169	struct ceph_object_locator oloc;
	170	};
	171
a40c4f10 YS	172	struct ceph_osd_event {
	173	u64 cookie;
	174	int one_shot;
	175	struct ceph_osd_client *osdc;
	176	void (cb)(u64, u64, u8, void );
	177	void *data;
	178	struct rb_node node;
	179	struct list_head osd_node;
	180	struct kref kref;
a40c4f10 YS	181	};
	182
	183	struct ceph_osd_event_work {
	184	struct work_struct work;
	185	struct ceph_osd_event *event;
	186	u64 ver;
	187	u64 notify_id;
	188	u8 opcode;
	189	};
	190
f24e9980 SW	191	struct ceph_osd_client {
	192	struct ceph_client *client;
	193
	194	struct ceph_osdmap osdmap; / current map */
	195	struct rw_semaphore map_sem;
	196	struct completion map_waiters;
	197	u64 last_requested_map;
	198
	199	struct mutex request_mutex;
	200	struct rb_root osds; /* osds */
f5a2041b	201	struct list_head osd_lru; /* idle osds */
f24e9980 SW	202	u64 timeout_tid; /* tid of timeout triggering rq */
	203	u64 last_tid; /* tid of last request */
	204	struct rb_root requests; /* pending requests */
6f6c7006 SW	205	struct list_head req_lru; /* in-flight lru */
	206	struct list_head req_unsent; /* unsent/need-resend queue */
	207	struct list_head req_notarget; /* map to no osd */
a40c4f10	208	struct list_head req_linger; /* lingering requests */
f24e9980 SW	209	int num_requests;
f24e9980 SW	210	struct delayed_work timeout_work;
f5a2041b	211	struct delayed_work osds_timeout_work;
039934b8	212	#ifdef CONFIG_DEBUG_FS
f24e9980	213	struct dentry *debugfs_file;
039934b8	214	#endif
f24e9980 SW	215
	216	mempool_t *req_mempool;
	217
0d59ab81	218	struct ceph_msgpool msgpool_op;
c16e7869	219	struct ceph_msgpool msgpool_op_reply;
a40c4f10 YS	220
	221	spinlock_t event_lock;
	222	struct rb_root event_tree;
	223	u64 event_count;
	224
	225	struct workqueue_struct *notify_wq;
f24e9980 SW	226	};
f24e9980 SW	227
5522ae0b AE	228	extern int ceph_osdc_setup(void);
	229	extern void ceph_osdc_cleanup(void);
	230
f24e9980 SW	231	extern int ceph_osdc_init(struct ceph_osd_client *osdc,
	232	struct ceph_client *client);
	233	extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
	234
	235	extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
	236	struct ceph_msg *msg);
	237	extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
	238	struct ceph_msg *msg);
	239
49719778 AE	240	extern void osd_req_op_init(struct ceph_osd_request *osd_req,
	241	unsigned int which, u16 opcode);
	242
	243	extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
	244	unsigned int which,
	245	struct page **pages, u64 length,
	246	u32 alignment, bool pages_from_pool,
	247	bool own_pages);
	248
c99d2d4a AE	249	extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	250	unsigned int which, u16 opcode,
33803f33 AE	251	u64 offset, u64 length,
33803f33 AE	252	u64 truncate_size, u32 truncate_seq);
c99d2d4a AE	253	extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
c99d2d4a AE	254	unsigned int which, u64 length);
a4ce40a9 AE	255
	256	extern struct ceph_osd_data *osd_req_op_extent_osd_data(
	257	struct ceph_osd_request *osd_req,
406e2c9f	258	unsigned int which);
a4ce40a9 AE	259	extern struct ceph_osd_data *osd_req_op_cls_response_data(
	260	struct ceph_osd_request *osd_req,
	261	unsigned int which);
	262
	263	extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
406e2c9f	264	unsigned int which,
a4ce40a9 AE	265	struct page **pages, u64 length,
	266	u32 alignment, bool pages_from_pool,
	267	bool own_pages);
	268	extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
406e2c9f	269	unsigned int which,
a4ce40a9 AE	270	struct ceph_pagelist *pagelist);
	271	#ifdef CONFIG_BLOCK
	272	extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
406e2c9f	273	unsigned int which,
a4ce40a9 AE	274	struct bio *bio, size_t bio_length);
	275	#endif /* CONFIG_BLOCK */
	276
04017e29 AE	277	extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
	278	unsigned int which,
	279	struct ceph_pagelist *pagelist);
6c57b554 AE	280	extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
	281	unsigned int which,
	282	struct page **pages, u64 length,
	283	u32 alignment, bool pages_from_pool,
	284	bool own_pages);
a4ce40a9	285	extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
c99d2d4a	286	unsigned int which,
a4ce40a9 AE	287	struct page **pages, u64 length,
	288	u32 alignment, bool pages_from_pool,
	289	bool own_pages);
	290
c99d2d4a AE	291	extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	292	unsigned int which, u16 opcode,
04017e29	293	const char class, const char method);
c99d2d4a AE	294	extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	295	unsigned int which, u16 opcode,
33803f33 AE	296	u64 cookie, u64 version, int flag);
33803f33 AE	297
3499e8a5	298	extern struct ceph_osd_request ceph_osdc_alloc_request(struct ceph_osd_client osdc,
3499e8a5	299	struct ceph_snap_context *snapc,
acead002	300	unsigned int num_ops,
3499e8a5	301	bool use_mempool,
54a54007	302	gfp_t gfp_flags);
3499e8a5	303
175face2	304	extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
68b4476b	305	struct ceph_snap_context *snapc,
4d6b250b	306	u64 snap_id,
af77f26c	307	struct timespec *mtime);
3499e8a5	308
f24e9980 SW	309	extern struct ceph_osd_request ceph_osdc_new_request(struct ceph_osd_client ,
	310	struct ceph_file_layout *layout,
	311	struct ceph_vino vino,
acead002	312	u64 offset, u64 *len,
79528734	313	int num_ops, int opcode, int flags,
f24e9980	314	struct ceph_snap_context *snapc,
acead002	315	u32 truncate_seq, u64 truncate_size,
153e5167	316	bool use_mempool);
f24e9980	317
a40c4f10 YS	318	extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
	319	struct ceph_osd_request *req);
	320	extern void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
	321	struct ceph_osd_request *req);
	322
f24e9980 SW	323	static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
f24e9980 SW	324	{
415e49a9 SW	325	kref_get(&req->r_kref);
	326	}
	327	extern void ceph_osdc_release_request(struct kref *kref);
	328	static inline void ceph_osdc_put_request(struct ceph_osd_request *req)
	329	{
	330	kref_put(&req->r_kref, ceph_osdc_release_request);
f24e9980	331	}
f24e9980 SW	332
	333	extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
	334	struct ceph_osd_request *req,
	335	bool nofail);
	336	extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
	337	struct ceph_osd_request *req);
	338	extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
	339
dd935f44 JD	340	extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
dd935f44 JD	341
f24e9980 SW	342	extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
	343	struct ceph_vino vino,
	344	struct ceph_file_layout *layout,
	345	u64 off, u64 *plen,
	346	u32 truncate_seq, u64 truncate_size,
b7495fc2 SW	347	struct page **pages, int nr_pages,
b7495fc2 SW	348	int page_align);
f24e9980 SW	349
	350	extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
	351	struct ceph_vino vino,
	352	struct ceph_file_layout *layout,
	353	struct ceph_snap_context *sc,
	354	u64 off, u64 len,
	355	u32 truncate_seq, u64 truncate_size,
	356	struct timespec *mtime,
24808826	357	struct page **pages, int nr_pages);
f24e9980	358
a40c4f10 YS	359	/* watch/notify events */
	360	extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
	361	void (event_cb)(u64, u64, u8, void ),
3c663bbd	362	void data, struct ceph_osd_event *pevent);
a40c4f10	363	extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
a40c4f10	364	extern void ceph_osdc_put_event(struct ceph_osd_event *event);
f24e9980 SW	365	#endif
f24e9980 SW	366