forked from Minki/linux
157 lines
4.9 KiB
C
157 lines
4.9 KiB
C
#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 "types.h"
|
|
#include "osdmap.h"
|
|
#include "messenger.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 *);
|
|
|
|
/* 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 ceph_authorizer *o_authorizer;
|
|
void *o_authorizer_buf, *o_authorizer_reply_buf;
|
|
size_t o_authorizer_buf_len, o_authorizer_reply_buf_len;
|
|
};
|
|
|
|
/* an in-flight request */
|
|
struct ceph_osd_request {
|
|
u64 r_tid; /* unique for this client */
|
|
struct rb_node r_node;
|
|
struct list_head r_osd_item;
|
|
struct ceph_osd *r_osd;
|
|
|
|
struct ceph_msg *r_request, *r_reply;
|
|
int r_result;
|
|
int r_flags; /* any additional flags for the osd */
|
|
u32 r_sent; /* >0 if r_request is sending/sent */
|
|
int r_prepared_pages, r_got_reply;
|
|
int r_num_prealloc_reply;
|
|
|
|
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, r_safe_callback;
|
|
struct ceph_eversion r_reassert_version;
|
|
struct list_head r_unsafe_item;
|
|
|
|
struct inode *r_inode; /* for use by callbacks */
|
|
struct writeback_control *r_wbc; /* ditto */
|
|
|
|
char r_oid[40]; /* object name */
|
|
int r_oid_len;
|
|
unsigned long r_timeout_stamp;
|
|
bool r_resend; /* msg send failed, needs retry */
|
|
|
|
struct ceph_file_layout r_file_layout;
|
|
struct ceph_snap_context *r_snapc; /* snap context for writes */
|
|
unsigned r_num_pages; /* size of page array (follows) */
|
|
struct page **r_pages; /* pages for data payload */
|
|
int r_pages_from_pool;
|
|
int r_own_pages; /* if true, i own page list */
|
|
};
|
|
|
|
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 */
|
|
u64 timeout_tid; /* tid of timeout triggering rq */
|
|
u64 last_tid; /* tid of last request */
|
|
struct rb_root requests; /* pending requests */
|
|
int num_requests;
|
|
struct delayed_work 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;
|
|
};
|
|
|
|
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 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 op, int flags,
|
|
struct ceph_snap_context *snapc,
|
|
int do_sync, u32 truncate_seq,
|
|
u64 truncate_size,
|
|
struct timespec *mtime,
|
|
bool use_mempool, int num_reply);
|
|
|
|
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 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);
|
|
|
|
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,
|
|
int flags, int do_sync, bool nofail);
|
|
|
|
#endif
|
|
|