[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_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;
			__u8 argc;
		} 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;
	};
};

/* 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_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;

	/* 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_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_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 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, 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 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 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);

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,
				      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;
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
3f1af42a ID	46	#define CEPH_OSD_SLAB_OPS 2
3f1af42a ID	47	#define CEPH_OSD_MAX_OPS 16
1b83bef2	48
2ac2b7a6	49	enum ceph_osd_data_type {
ec9123c5	50	CEPH_OSD_DATA_TYPE_NONE = 0,
2ac2b7a6	51	CEPH_OSD_DATA_TYPE_PAGES,
9a5e6d09	52	CEPH_OSD_DATA_TYPE_PAGELIST,
2ac2b7a6 AE	53	#ifdef CONFIG_BLOCK
	54	CEPH_OSD_DATA_TYPE_BIO,
	55	#endif /* CONFIG_BLOCK */
	56	};
	57
2794a82a	58	struct ceph_osd_data {
2ac2b7a6 AE	59	enum ceph_osd_data_type type;
2ac2b7a6 AE	60	union {
2794a82a AE	61	struct {
2794a82a AE	62	struct page **pages;
e0c59487	63	u64 length;
2794a82a AE	64	u32 alignment;
	65	bool pages_from_pool;
	66	bool own_pages;
	67	};
9a5e6d09	68	struct ceph_pagelist *pagelist;
2794a82a	69	#ifdef CONFIG_BLOCK
fdce58cc AE	70	struct {
	71	struct bio bio; / list of bios */
	72	size_t bio_length; /* total in list */
	73	};
2794a82a AE	74	#endif /* CONFIG_BLOCK */
	75	};
	76	};
	77
79528734 AE	78	struct ceph_osd_req_op {
79528734 AE	79	u16 op; /* CEPH_OSD_OP_* */
7b25bf5f	80	u32 flags; /* CEPH_OSD_OP_FLAG_* */
de2aa102	81	u32 indata_len; /* request */
7665d85b YZ	82	u32 outdata_len; /* reply */
	83	s32 rval;
	84
79528734	85	union {
49719778	86	struct ceph_osd_data raw_data_in;
79528734 AE	87	struct {
	88	u64 offset, length;
	89	u64 truncate_size;
	90	u32 truncate_seq;
5476492f	91	struct ceph_osd_data osd_data;
79528734	92	} extent;
d74b50be	93	struct {
d7d5a007 ID	94	u32 name_len;
d7d5a007 ID	95	u32 value_len;
d74b50be YZ	96	__u8 cmp_op; /* CEPH_OSD_CMPXATTR_OP_* */
	97	__u8 cmp_mode; /* CEPH_OSD_CMPXATTR_MODE_* */
	98	struct ceph_osd_data osd_data;
	99	} xattr;
79528734 AE	100	struct {
	101	const char *class_name;
	102	const char *method_name;
5476492f	103	struct ceph_osd_data request_info;
04017e29	104	struct ceph_osd_data request_data;
5476492f	105	struct ceph_osd_data response_data;
79528734 AE	106	__u8 class_len;
	107	__u8 method_len;
	108	__u8 argc;
	109	} cls;
	110	struct {
	111	u64 cookie;
	112	u64 ver;
	113	u32 prot_ver;
	114	u32 timeout;
	115	__u8 flag;
	116	} watch;
c647b8a8 ID	117	struct {
	118	u64 expected_object_size;
	119	u64 expected_write_size;
	120	} alloc_hint;
79528734 AE	121	};
	122	};
	123
f24e9980 SW	124	/* an in-flight request */
	125	struct ceph_osd_request {
	126	u64 r_tid; /* unique for this client */
	127	struct rb_node r_node;
422d2cb8	128	struct list_head r_req_lru_item;
f24e9980	129	struct list_head r_osd_item;
a40c4f10	130	struct list_head r_linger_item;
1d0326b1	131	struct list_head r_linger_osd_item;
f24e9980	132	struct ceph_osd *r_osd;
5b191d99	133	struct ceph_pg r_pgid;
d85b7056 SW	134	int r_pg_osds[CEPH_PG_MAX_SIZE];
d85b7056 SW	135	int r_num_pg_osds;
f24e9980 SW	136
f24e9980 SW	137	struct ceph_msg r_request, r_reply;
f24e9980 SW	138	int r_flags; /* any additional flags for the osd */
f24e9980 SW	139	u32 r_sent; /* >0 if r_request is sending/sent */
1b83bef2	140
79528734 AE	141	/* request osd ops array */
79528734 AE	142	unsigned int r_num_ops;
79528734	143
1b83bef2 SW	144	/* these are updated on each send */
	145	__le32 *r_request_osdmap_epoch;
	146	__le32 *r_request_flags;
	147	__le64 *r_request_pool;
	148	void *r_request_pgid;
	149	__le32 *r_request_attempts;
d29adb34	150	bool r_paused;
1b83bef2 SW	151	struct ceph_eversion *r_request_reassert_version;
	152
	153	int r_result;
350b1c32	154	int r_got_reply;
a40c4f10	155	int r_linger;
f24e9980 SW	156
f24e9980 SW	157	struct ceph_osd_client *r_osdc;
415e49a9	158	struct kref r_kref;
f24e9980 SW	159	bool r_mempool;
f24e9980 SW	160	struct completion r_completion, r_safe_completion;
26be8808 AE	161	ceph_osdc_callback_t r_callback;
26be8808 AE	162	ceph_osdc_unsafe_callback_t r_unsafe_callback;
f24e9980 SW	163	struct ceph_eversion r_reassert_version;
	164	struct list_head r_unsafe_item;
	165
	166	struct inode r_inode; / for use by callbacks */
3d14c5d2	167	void r_priv; / ditto */
f24e9980	168
3c972c95 ID	169	struct ceph_object_locator r_base_oloc;
3c972c95 ID	170	struct ceph_object_id r_base_oid;
205ee118 ID	171	struct ceph_object_locator r_target_oloc;
205ee118 ID	172	struct ceph_object_id r_target_oid;
22116525	173
2169aea6	174	u64 r_snapid;
3dd72fc0	175	unsigned long r_stamp; /* send OR check time */
f24e9980	176
f24e9980	177	struct ceph_snap_context r_snapc; / snap context for writes */
3f1af42a ID	178
3f1af42a ID	179	struct ceph_osd_req_op r_ops[];
f24e9980 SW	180	};
f24e9980 SW	181
205ee118 ID	182	struct ceph_request_redirect {
	183	struct ceph_object_locator oloc;
	184	};
	185
a40c4f10 YS	186	struct ceph_osd_event {
	187	u64 cookie;
	188	int one_shot;
	189	struct ceph_osd_client *osdc;
	190	void (cb)(u64, u64, u8, void );
	191	void *data;
	192	struct rb_node node;
	193	struct list_head osd_node;
	194	struct kref kref;
a40c4f10 YS	195	};
	196
	197	struct ceph_osd_event_work {
	198	struct work_struct work;
	199	struct ceph_osd_event *event;
	200	u64 ver;
	201	u64 notify_id;
	202	u8 opcode;
	203	};
	204
f24e9980 SW	205	struct ceph_osd_client {
	206	struct ceph_client *client;
	207
	208	struct ceph_osdmap osdmap; / current map */
	209	struct rw_semaphore map_sem;
	210	struct completion map_waiters;
	211	u64 last_requested_map;
	212
	213	struct mutex request_mutex;
	214	struct rb_root osds; /* osds */
f5a2041b	215	struct list_head osd_lru; /* idle osds */
f24e9980 SW	216	u64 timeout_tid; /* tid of timeout triggering rq */
	217	u64 last_tid; /* tid of last request */
	218	struct rb_root requests; /* pending requests */
6f6c7006 SW	219	struct list_head req_lru; /* in-flight lru */
	220	struct list_head req_unsent; /* unsent/need-resend queue */
	221	struct list_head req_notarget; /* map to no osd */
a40c4f10	222	struct list_head req_linger; /* lingering requests */
f24e9980 SW	223	int num_requests;
f24e9980 SW	224	struct delayed_work timeout_work;
f5a2041b	225	struct delayed_work osds_timeout_work;
039934b8	226	#ifdef CONFIG_DEBUG_FS
f24e9980	227	struct dentry *debugfs_file;
039934b8	228	#endif
f24e9980 SW	229
	230	mempool_t *req_mempool;
	231
0d59ab81	232	struct ceph_msgpool msgpool_op;
c16e7869	233	struct ceph_msgpool msgpool_op_reply;
a40c4f10 YS	234
	235	spinlock_t event_lock;
	236	struct rb_root event_tree;
	237	u64 event_count;
	238
	239	struct workqueue_struct *notify_wq;
f24e9980 SW	240	};
f24e9980 SW	241
5522ae0b AE	242	extern int ceph_osdc_setup(void);
	243	extern void ceph_osdc_cleanup(void);
	244
f24e9980 SW	245	extern int ceph_osdc_init(struct ceph_osd_client *osdc,
	246	struct ceph_client *client);
	247	extern void ceph_osdc_stop(struct ceph_osd_client *osdc);
	248
	249	extern void ceph_osdc_handle_reply(struct ceph_osd_client *osdc,
	250	struct ceph_msg *msg);
	251	extern void ceph_osdc_handle_map(struct ceph_osd_client *osdc,
	252	struct ceph_msg *msg);
	253
49719778	254	extern void osd_req_op_init(struct ceph_osd_request *osd_req,
144cba14	255	unsigned int which, u16 opcode, u32 flags);
49719778 AE	256
	257	extern void osd_req_op_raw_data_in_pages(struct ceph_osd_request *,
	258	unsigned int which,
	259	struct page **pages, u64 length,
	260	u32 alignment, bool pages_from_pool,
	261	bool own_pages);
	262
c99d2d4a AE	263	extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	264	unsigned int which, u16 opcode,
33803f33 AE	265	u64 offset, u64 length,
33803f33 AE	266	u64 truncate_size, u32 truncate_seq);
c99d2d4a AE	267	extern void osd_req_op_extent_update(struct ceph_osd_request *osd_req,
c99d2d4a AE	268	unsigned int which, u64 length);
2c63f49a YZ	269	extern void osd_req_op_extent_dup_last(struct ceph_osd_request *osd_req,
2c63f49a YZ	270	unsigned int which, u64 offset_inc);
a4ce40a9 AE	271
	272	extern struct ceph_osd_data *osd_req_op_extent_osd_data(
	273	struct ceph_osd_request *osd_req,
406e2c9f	274	unsigned int which);
a4ce40a9 AE	275	extern struct ceph_osd_data *osd_req_op_cls_response_data(
	276	struct ceph_osd_request *osd_req,
	277	unsigned int which);
	278
	279	extern void osd_req_op_extent_osd_data_pages(struct ceph_osd_request *,
406e2c9f	280	unsigned int which,
a4ce40a9 AE	281	struct page **pages, u64 length,
	282	u32 alignment, bool pages_from_pool,
	283	bool own_pages);
	284	extern void osd_req_op_extent_osd_data_pagelist(struct ceph_osd_request *,
406e2c9f	285	unsigned int which,
a4ce40a9 AE	286	struct ceph_pagelist *pagelist);
	287	#ifdef CONFIG_BLOCK
	288	extern void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *,
406e2c9f	289	unsigned int which,
a4ce40a9 AE	290	struct bio *bio, size_t bio_length);
	291	#endif /* CONFIG_BLOCK */
	292
04017e29 AE	293	extern void osd_req_op_cls_request_data_pagelist(struct ceph_osd_request *,
	294	unsigned int which,
	295	struct ceph_pagelist *pagelist);
6c57b554 AE	296	extern void osd_req_op_cls_request_data_pages(struct ceph_osd_request *,
	297	unsigned int which,
	298	struct page **pages, u64 length,
	299	u32 alignment, bool pages_from_pool,
	300	bool own_pages);
a4ce40a9	301	extern void osd_req_op_cls_response_data_pages(struct ceph_osd_request *,
c99d2d4a	302	unsigned int which,
a4ce40a9 AE	303	struct page **pages, u64 length,
	304	u32 alignment, bool pages_from_pool,
	305	bool own_pages);
	306
c99d2d4a AE	307	extern void osd_req_op_cls_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	308	unsigned int which, u16 opcode,
04017e29	309	const char class, const char method);
d74b50be YZ	310	extern int osd_req_op_xattr_init(struct ceph_osd_request *osd_req, unsigned int which,
	311	u16 opcode, const char name, const void value,
	312	size_t size, u8 cmp_op, u8 cmp_mode);
c99d2d4a AE	313	extern void osd_req_op_watch_init(struct ceph_osd_request *osd_req,
c99d2d4a AE	314	unsigned int which, u16 opcode,
33803f33	315	u64 cookie, u64 version, int flag);
c647b8a8 ID	316	extern void osd_req_op_alloc_hint_init(struct ceph_osd_request *osd_req,
	317	unsigned int which,
	318	u64 expected_object_size,
	319	u64 expected_write_size);
33803f33	320
3499e8a5	321	extern struct ceph_osd_request ceph_osdc_alloc_request(struct ceph_osd_client osdc,
3499e8a5	322	struct ceph_snap_context *snapc,
acead002	323	unsigned int num_ops,
3499e8a5	324	bool use_mempool,
54a54007	325	gfp_t gfp_flags);
3499e8a5	326
175face2	327	extern void ceph_osdc_build_request(struct ceph_osd_request *req, u64 off,
68b4476b	328	struct ceph_snap_context *snapc,
4d6b250b	329	u64 snap_id,
af77f26c	330	struct timespec *mtime);
3499e8a5	331
f24e9980 SW	332	extern struct ceph_osd_request ceph_osdc_new_request(struct ceph_osd_client ,
	333	struct ceph_file_layout *layout,
	334	struct ceph_vino vino,
acead002	335	u64 offset, u64 *len,
715e4cd4 YZ	336	unsigned int which, int num_ops,
715e4cd4 YZ	337	int opcode, int flags,
f24e9980	338	struct ceph_snap_context *snapc,
acead002	339	u32 truncate_seq, u64 truncate_size,
153e5167	340	bool use_mempool);
f24e9980	341
a40c4f10 YS	342	extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
a40c4f10 YS	343	struct ceph_osd_request *req);
a40c4f10	344
9e94af20 ID	345	extern void ceph_osdc_get_request(struct ceph_osd_request *req);
9e94af20 ID	346	extern void ceph_osdc_put_request(struct ceph_osd_request *req);
f24e9980 SW	347
	348	extern int ceph_osdc_start_request(struct ceph_osd_client *osdc,
	349	struct ceph_osd_request *req,
	350	bool nofail);
c9f9b93d	351	extern void ceph_osdc_cancel_request(struct ceph_osd_request *req);
f24e9980 SW	352	extern int ceph_osdc_wait_request(struct ceph_osd_client *osdc,
	353	struct ceph_osd_request *req);
	354	extern void ceph_osdc_sync(struct ceph_osd_client *osdc);
	355
dd935f44 JD	356	extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc);
dd935f44 JD	357
f24e9980 SW	358	extern int ceph_osdc_readpages(struct ceph_osd_client *osdc,
	359	struct ceph_vino vino,
	360	struct ceph_file_layout *layout,
	361	u64 off, u64 *plen,
	362	u32 truncate_seq, u64 truncate_size,
b7495fc2 SW	363	struct page **pages, int nr_pages,
b7495fc2 SW	364	int page_align);
f24e9980 SW	365
	366	extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
	367	struct ceph_vino vino,
	368	struct ceph_file_layout *layout,
	369	struct ceph_snap_context *sc,
	370	u64 off, u64 len,
	371	u32 truncate_seq, u64 truncate_size,
	372	struct timespec *mtime,
24808826	373	struct page **pages, int nr_pages);
f24e9980	374
a40c4f10 YS	375	/* watch/notify events */
	376	extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
	377	void (event_cb)(u64, u64, u8, void ),
3c663bbd	378	void data, struct ceph_osd_event *pevent);
a40c4f10	379	extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
a40c4f10	380	extern void ceph_osdc_put_event(struct ceph_osd_event *event);
f24e9980 SW	381	#endif
f24e9980 SW	382