diff options
Diffstat (limited to 'include/linux/ceph/osd_client.h')
| -rw-r--r-- | include/linux/ceph/osd_client.h | 583 |
1 files changed, 432 insertions, 151 deletions
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h index ce6df39f60ff..50b14a5661c7 100644 --- a/include/linux/ceph/osd_client.h +++ b/include/linux/ceph/osd_client.h @@ -1,55 +1,105 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _FS_CEPH_OSD_CLIENT_H #define _FS_CEPH_OSD_CLIENT_H +#include <linux/bitrev.h> #include <linux/completion.h> #include <linux/kref.h> #include <linux/mempool.h> #include <linux/rbtree.h> +#include <linux/refcount.h> +#include <linux/ktime.h> #include <linux/ceph/types.h> #include <linux/ceph/osdmap.h> #include <linux/ceph/messenger.h> +#include <linux/ceph/msgpool.h> #include <linux/ceph/auth.h> #include <linux/ceph/pagelist.h> -/* - * Maximum object name size - * (must be at least as big as RBD_MAX_MD_NAME_LEN -- currently 100) - */ -#define MAX_OBJ_NAME_SIZE 100 - 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); +typedef void (*ceph_osdc_callback_t)(struct ceph_osd_request *); + +#define CEPH_HOMELESS_OSD -1 + +/* + * A single extent in a SPARSE_READ reply. + * + * Note that these come from the OSD as little-endian values. On BE arches, + * we convert them in-place after receipt. + */ +struct ceph_sparse_extent { + u64 off; + u64 len; +} __packed; + +/* Sparse read state machine state values */ +enum ceph_sparse_read_state { + CEPH_SPARSE_READ_HDR = 0, + CEPH_SPARSE_READ_EXTENTS, + CEPH_SPARSE_READ_DATA_LEN, + CEPH_SPARSE_READ_DATA_PRE, + CEPH_SPARSE_READ_DATA, +}; + +/* + * A SPARSE_READ reply is a 32-bit count of extents, followed by an array of + * 64-bit offset/length pairs, and then all of the actual file data + * concatenated after it (sans holes). + * + * Unfortunately, we don't know how long the extent array is until we've + * started reading the data section of the reply. The caller should send down + * a destination buffer for the array, but we'll alloc one if it's too small + * or if the caller doesn't. + */ +struct ceph_sparse_read { + enum ceph_sparse_read_state sr_state; /* state machine state */ + u64 sr_req_off; /* orig request offset */ + u64 sr_req_len; /* orig request length */ + u64 sr_pos; /* current pos in buffer */ + int sr_index; /* current extent index */ + u32 sr_datalen; /* length of actual data */ + u32 sr_count; /* extent count in reply */ + int sr_ext_len; /* length of extent array */ + struct ceph_sparse_extent *sr_extent; /* extent array */ +}; -/* a given osd we're communicating with */ +/* + * A given osd we're communicating with. + * + * Note that the o_requests tree can be searched while holding the "lock" mutex + * or the "o_requests_lock" spinlock. Insertion or removal requires both! + */ struct ceph_osd { - atomic_t o_ref; + refcount_t o_ref; + int o_sparse_op_idx; 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; + spinlock_t o_requests_lock; + struct rb_root o_requests; + struct rb_root o_linger_requests; + struct rb_root o_backoff_mappings; + struct rb_root o_backoffs_by_id; 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; + struct mutex lock; + struct ceph_sparse_read o_sparse_read; }; - -#define CEPH_OSD_MAX_OP 2 +#define CEPH_OSD_SLAB_OPS 2 +#define CEPH_OSD_MAX_OPS 16 enum ceph_osd_data_type { CEPH_OSD_DATA_TYPE_NONE = 0, @@ -58,6 +108,8 @@ enum ceph_osd_data_type { #ifdef CONFIG_BLOCK CEPH_OSD_DATA_TYPE_BIO, #endif /* CONFIG_BLOCK */ + CEPH_OSD_DATA_TYPE_BVECS, + CEPH_OSD_DATA_TYPE_ITER, }; struct ceph_osd_data { @@ -73,25 +125,43 @@ struct ceph_osd_data { struct ceph_pagelist *pagelist; #ifdef CONFIG_BLOCK struct { - struct bio *bio; /* list of bios */ - size_t bio_length; /* total in list */ + struct ceph_bio_iter bio_pos; + u32 bio_length; }; #endif /* CONFIG_BLOCK */ + struct { + struct ceph_bvec_iter bvec_pos; + u32 num_bvecs; + }; + struct iov_iter iter; }; }; struct ceph_osd_req_op { u16 op; /* CEPH_OSD_OP_* */ - u32 payload_len; + 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; + int sparse_ext_cnt; + struct ceph_sparse_extent *sparse_ext; 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; @@ -99,112 +169,258 @@ struct ceph_osd_req_op { struct ceph_osd_data response_data; __u8 class_len; __u8 method_len; - __u8 argc; + u32 indata_len; } cls; struct { u64 cookie; - u64 ver; - u32 prot_ver; - u32 timeout; - __u8 flag; + __u8 op; /* CEPH_OSD_WATCH_OP_ */ + u32 gen; } watch; + struct { + struct ceph_osd_data request_data; + } notify_ack; + struct { + u64 cookie; + struct ceph_osd_data request_data; + struct ceph_osd_data response_data; + } notify; + struct { + struct ceph_osd_data response_data; + } list_watchers; + struct { + u64 expected_object_size; + u64 expected_write_size; + u32 flags; /* CEPH_OSD_OP_ALLOC_HINT_FLAG_* */ + } alloc_hint; + struct { + u64 snapid; + u64 src_version; + u8 flags; + u32 src_fadvise_flags; + struct ceph_osd_data osd_data; + } copy_from; + struct { + u64 ver; + } assert_ver; }; }; +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; /* last raw pg we mapped to */ + struct ceph_spg spgid; /* last actual spg we mapped to */ + u32 pg_num; + u32 pg_num_mask; + struct ceph_osds acting; + struct ceph_osds up; + int size; + int min_size; + bool sort_bitwise; + bool recovery_deletes; + + unsigned int flags; /* CEPH_OSD_FLAG_* */ + bool used_replica; + bool paused; + + u32 epoch; + u32 last_force_resend; + + 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; + struct rb_node r_mc_node; /* map check */ + struct work_struct r_complete_work; 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_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; - 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; - 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; + bool r_linger; /* don't resend on failure */ + struct completion r_completion; /* private to osd_client.c */ 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 */ + struct list_head r_private_item; /* ditto */ void *r_priv; /* ditto */ - char r_oid[MAX_OBJ_NAME_SIZE]; /* object name */ - int r_oid_len; - u64 r_snapid; - unsigned long r_stamp; /* send OR check time */ + /* set by submitter */ + u64 r_snapid; /* for reads, CEPH_NOSNAP o/w */ + struct ceph_snap_context *r_snapc; /* for writes */ + struct timespec64 r_mtime; /* ditto */ + u64 r_data_offset; /* ditto */ + + /* internal */ + u64 r_version; /* data version sent in reply */ + unsigned long r_stamp; /* jiffies, send or check time */ + unsigned long r_start_stamp; /* jiffies */ + ktime_t r_start_latency; /* ktime_t */ + ktime_t r_end_latency; /* ktime_t */ + int r_attempts; + u32 r_map_dne_bound; + + struct ceph_osd_req_op r_ops[] __counted_by(r_num_ops); +}; - struct ceph_file_layout r_file_layout; - 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; +/* + * osd request identifier + * + * caller name + incarnation# + tid to unique identify this request + */ +struct ceph_osd_reqid { + struct ceph_entity_name name; + __le64 tid; + __le32 inc; +} __packed; + +struct ceph_blkin_trace_info { + __le64 trace_id; + __le64 span_id; + __le64 parent_span_id; +} __packed; + +typedef void (*rados_watchcb2_t)(void *arg, u64 notify_id, u64 cookie, + u64 notifier_id, void *data, size_t data_len); +typedef void (*rados_watcherrcb_t)(void *arg, u64 cookie, int err); + +struct ceph_osd_linger_request { struct ceph_osd_client *osdc; - void (*cb)(u64, u64, u8, void *); + u64 linger_id; + bool committed; + bool is_watch; /* watch or notify */ + + struct ceph_osd *osd; + struct ceph_osd_request *reg_req; + struct ceph_osd_request *ping_req; + unsigned long ping_sent; + unsigned long watch_valid_thru; + struct list_head pending_lworks; + + struct ceph_osd_request_target t; + u32 map_dne_bound; + + struct timespec64 mtime; + + struct kref kref; + struct mutex lock; + struct rb_node node; /* osd */ + struct rb_node osdc_node; /* osdc */ + struct rb_node mc_node; /* map check */ + struct list_head scan_item; + + struct completion reg_commit_wait; + struct completion notify_finish_wait; + int reg_commit_error; + int notify_finish_error; + int last_error; + + u32 register_gen; + u64 notify_id; + + rados_watchcb2_t wcb; + rados_watcherrcb_t errcb; void *data; + + struct ceph_pagelist *request_pl; + struct page **notify_id_pages; + + struct page ***preply_pages; + size_t *preply_len; +}; + +struct ceph_watch_item { + struct ceph_entity_name name; + u64 cookie; + struct ceph_entity_addr addr; +}; + +struct ceph_spg_mapping { struct rb_node node; - struct list_head osd_node; - struct kref kref; + struct ceph_spg spgid; + + struct rb_root backoffs; }; -struct ceph_osd_event_work { - struct work_struct work; - struct ceph_osd_event *event; - u64 ver; - u64 notify_id; - u8 opcode; +struct ceph_hobject_id { + void *key; + size_t key_len; + void *oid; + size_t oid_len; + u64 snapid; + u32 hash; + u8 is_max; + void *nspace; + size_t nspace_len; + s64 pool; + + /* cache */ + u32 hash_reverse_bits; }; +static inline void ceph_hoid_build_hash_cache(struct ceph_hobject_id *hoid) +{ + hoid->hash_reverse_bits = bitrev32(hoid->hash); +} + +/* + * PG-wide backoff: [begin, end) + * per-object backoff: begin == end + */ +struct ceph_osd_backoff { + struct rb_node spg_node; + struct rb_node id_node; + + struct ceph_spg spgid; + u64 id; + struct ceph_hobject_id *begin; + struct ceph_hobject_id *end; +}; + +#define CEPH_LINGER_ID_START 0xffff000000000000ULL + 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 rw_semaphore lock; - 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; + spinlock_t osd_lru_lock; + u32 epoch_barrier; + struct ceph_osd homeless_osd; + atomic64_t last_tid; /* tid of last request */ + u64 last_linger_id; + struct rb_root linger_requests; /* lingering requests */ + struct rb_root map_checks; + struct rb_root linger_map_checks; + atomic_t num_requests; + atomic_t num_homeless; + int abort_err; struct delayed_work timeout_work; struct delayed_work osds_timeout_work; #ifdef CONFIG_DEBUG_FS @@ -216,27 +432,39 @@ struct ceph_osd_client { 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; + struct workqueue_struct *completion_wq; }; +static inline bool ceph_osdmap_flag(struct ceph_osd_client *osdc, int flag) +{ + return osdc->osdmap->flags & flag; +} + 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_reopen_osds(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); +void ceph_osdc_update_epoch_barrier(struct ceph_osd_client *osdc, u32 eb); +void ceph_osdc_abort_requests(struct ceph_osd_client *osdc, int err); +void ceph_osdc_clear_abort_err(struct ceph_osd_client *osdc); -extern void osd_req_op_init(struct ceph_osd_request *osd_req, - unsigned int which, u16 opcode); +#define osd_req_op_data(oreq, whch, typ, fld) \ +({ \ + struct ceph_osd_request *__oreq = (oreq); \ + unsigned int __whch = (whch); \ + BUG_ON(__whch >= __oreq->r_num_ops); \ + &__oreq->r_ops[__whch].typ.fld; \ +}) + +struct ceph_osd_req_op *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, @@ -250,113 +478,166 @@ extern void osd_req_op_extent_init(struct ceph_osd_request *osd_req, 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); +void osd_req_op_extent_osd_data_bio(struct ceph_osd_request *osd_req, + unsigned int which, + struct ceph_bio_iter *bio_pos, + u32 bio_length); #endif /* CONFIG_BLOCK */ +void osd_req_op_extent_osd_data_bvecs(struct ceph_osd_request *osd_req, + unsigned int which, + struct bio_vec *bvecs, u32 num_bvecs, + u32 bytes); +void osd_req_op_extent_osd_data_bvec_pos(struct ceph_osd_request *osd_req, + unsigned int which, + struct ceph_bvec_iter *bvec_pos); +void osd_req_op_extent_osd_iter(struct ceph_osd_request *osd_req, + unsigned int which, struct iov_iter *iter); -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); +void osd_req_op_cls_request_data_bvecs(struct ceph_osd_request *osd_req, + unsigned int which, + struct bio_vec *bvecs, u32 num_bvecs, + u32 bytes); 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); +int osd_req_op_cls_init(struct ceph_osd_request *osd_req, unsigned int which, + 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_alloc_hint_init(struct ceph_osd_request *osd_req, + unsigned int which, + u64 expected_object_size, + u64 expected_write_size, + u32 flags); +extern int osd_req_op_copy_from_init(struct ceph_osd_request *req, + u64 src_snapid, u64 src_version, + struct ceph_object_id *src_oid, + struct ceph_object_locator *src_oloc, + u32 src_fadvise_flags, + u32 dst_fadvise_flags, + u32 truncate_seq, u64 truncate_size, + u8 copy_from_flags); 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); +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, - int num_ops, int opcode, int flags, + 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_unregister_linger_request(struct ceph_osd_client *osdc, - struct ceph_osd_request *req); +int __ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt); -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) +/* + * How big an extent array should we preallocate for a sparse read? This is + * just a starting value. If we get more than this back from the OSD, the + * receiver will reallocate. + */ +#define CEPH_SPARSE_EXT_ARRAY_INITIAL 16 + +static inline int ceph_alloc_sparse_ext_map(struct ceph_osd_req_op *op, int cnt) { - kref_put(&req->r_kref, ceph_osdc_release_request); + if (!cnt) + cnt = CEPH_SPARSE_EXT_ARRAY_INITIAL; + + return __ceph_alloc_sparse_ext_map(op, cnt); } -extern int ceph_osdc_start_request(struct ceph_osd_client *osdc, - struct ceph_osd_request *req, - bool nofail); +extern void ceph_osdc_get_request(struct ceph_osd_request *req); +extern void ceph_osdc_put_request(struct ceph_osd_request *req); + +void ceph_osdc_start_request(struct ceph_osd_client *osdc, + struct ceph_osd_request *req); +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 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 +extern void ceph_osdc_flush_notifies(struct ceph_osd_client *osdc); +void ceph_osdc_maybe_request_map(struct ceph_osd_client *osdc); + +int ceph_osdc_call(struct ceph_osd_client *osdc, + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + const char *class, const char *method, + unsigned int flags, + struct page *req_page, size_t req_len, + struct page **resp_pages, size_t *resp_len); + +/* watch/notify */ +struct ceph_osd_linger_request * +ceph_osdc_watch(struct ceph_osd_client *osdc, + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + rados_watchcb2_t wcb, + rados_watcherrcb_t errcb, + void *data); +int ceph_osdc_unwatch(struct ceph_osd_client *osdc, + struct ceph_osd_linger_request *lreq); + +int ceph_osdc_notify_ack(struct ceph_osd_client *osdc, + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + u64 notify_id, + u64 cookie, + void *payload, + u32 payload_len); +int ceph_osdc_notify(struct ceph_osd_client *osdc, + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + void *payload, + u32 payload_len, + u32 timeout, + struct page ***preply_pages, + size_t *preply_len); +int ceph_osdc_list_watchers(struct ceph_osd_client *osdc, + struct ceph_object_id *oid, + struct ceph_object_locator *oloc, + struct ceph_watch_item **watchers, + u32 *num_watchers); + +/* Find offset into the buffer of the end of the extent map */ +static inline u64 ceph_sparse_ext_map_end(struct ceph_osd_req_op *op) +{ + struct ceph_sparse_extent *ext; + /* No extents? No data */ + if (op->extent.sparse_ext_cnt == 0) + return 0; + + ext = &op->extent.sparse_ext[op->extent.sparse_ext_cnt - 1]; + + return ext->off + ext->len - op->extent.offset; +} + +#endif |