/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _FS_CEPH_LIBCEPH_H #define _FS_CEPH_LIBCEPH_H #include <linux/ceph/ceph_debug.h> #include <asm/unaligned.h> #include <linux/backing-dev.h> #include <linux/completion.h> #include <linux/exportfs.h> #include <linux/bug.h> #include <linux/fs.h> #include <linux/mempool.h> #include <linux/pagemap.h> #include <linux/wait.h> #include <linux/writeback.h> #include <linux/slab.h> #include <linux/refcount.h> #include <linux/ceph/types.h> #include <linux/ceph/messenger.h> #include <linux/ceph/msgpool.h> #include <linux/ceph/mon_client.h> #include <linux/ceph/osd_client.h> #include <linux/ceph/ceph_fs.h> #include <linux/ceph/string_table.h> /* * mount options */ #define CEPH_OPT_FSID … #define CEPH_OPT_NOSHARE … #define CEPH_OPT_MYIP … #define CEPH_OPT_NOCRC … #define CEPH_OPT_TCP_NODELAY … #define CEPH_OPT_NOMSGSIGN … #define CEPH_OPT_ABORT_ON_FULL … #define CEPH_OPT_RXBOUNCE … #define CEPH_OPT_DEFAULT … #define ceph_set_opt(client, opt) … #define ceph_test_opt(client, opt) … struct ceph_options { … }; /* * defaults */ #define CEPH_MOUNT_TIMEOUT_DEFAULT … #define CEPH_OSD_KEEPALIVE_DEFAULT … #define CEPH_OSD_IDLE_TTL_DEFAULT … #define CEPH_OSD_REQUEST_TIMEOUT_DEFAULT … #define CEPH_READ_FROM_REPLICA_DEFAULT … #define CEPH_MONC_HUNT_INTERVAL … #define CEPH_MONC_PING_INTERVAL … #define CEPH_MONC_PING_TIMEOUT … #define CEPH_MONC_HUNT_BACKOFF … #define CEPH_MONC_HUNT_MAX_MULT … #define CEPH_MSG_MAX_CONTROL_LEN … #define CEPH_MSG_MAX_FRONT_LEN … #define CEPH_MSG_MAX_MIDDLE_LEN … /* * The largest possible rbd data object is 32M. * The largest possible rbd object map object is 64M. * * There is no limit on the size of cephfs objects, but it has to obey * rsize and wsize mount options anyway. */ #define CEPH_MSG_MAX_DATA_LEN … #define CEPH_AUTH_NAME_DEFAULT … static inline unsigned long ceph_timeout_jiffies(unsigned long timeout) { … } struct ceph_mds_client; /* * per client state * * possibly shared by multiple mount points, if they are * mounting the same ceph filesystem/cluster. */ struct ceph_client { … }; #define from_msgr(ms) … static inline bool ceph_msgr2(struct ceph_client *client) { … } /* * snapshots */ /* * A "snap context" is the set of existing snapshots when we * write data. It is used by the OSD to guide its COW behavior. * * The ceph_snap_context is refcounted, and attached to each dirty * page, indicating which context the dirty data belonged when it was * dirtied. */ struct ceph_snap_context { … }; extern struct ceph_snap_context *ceph_create_snap_context(u32 snap_count, gfp_t gfp_flags); extern struct ceph_snap_context *ceph_get_snap_context( struct ceph_snap_context *sc); extern void ceph_put_snap_context(struct ceph_snap_context *sc); /* * calculate the number of pages a given length and offset map onto, * if we align the data. */ static inline int calc_pages_for(u64 off, u64 len) { … } #define RB_BYVAL(a) … #define RB_BYPTR(a) … #define RB_CMP3WAY(a, b) … #define DEFINE_RB_INSDEL_FUNCS2(name, type, keyfld, cmpexp, keyexp, nodefld) … /* * @lookup_param_type is a parameter and not constructed from (@type, * @keyfld) with typeof() because adding const is too unwieldy. */ #define DEFINE_RB_LOOKUP_FUNC2(name, type, keyfld, cmpexp, keyexp, \ lookup_param_type, nodefld) … #define DEFINE_RB_FUNCS2(name, type, keyfld, cmpexp, keyexp, \ lookup_param_type, nodefld) … /* * Shorthands for integer keys. */ #define DEFINE_RB_INSDEL_FUNCS(name, type, keyfld, nodefld) … #define DEFINE_RB_LOOKUP_FUNC(name, type, keyfld, nodefld) … #define DEFINE_RB_FUNCS(name, type, keyfld, nodefld) … extern struct kmem_cache *ceph_inode_cachep; extern struct kmem_cache *ceph_cap_cachep; extern struct kmem_cache *ceph_cap_snap_cachep; extern struct kmem_cache *ceph_cap_flush_cachep; extern struct kmem_cache *ceph_dentry_cachep; extern struct kmem_cache *ceph_file_cachep; extern struct kmem_cache *ceph_dir_file_cachep; extern struct kmem_cache *ceph_mds_request_cachep; extern mempool_t *ceph_wb_pagevec_pool; /* ceph_common.c */ extern bool libceph_compatible(void *data); extern const char *ceph_msg_type_name(int type); extern int ceph_check_fsid(struct ceph_client *client, struct ceph_fsid *fsid); extern int ceph_parse_fsid(const char *str, struct ceph_fsid *fsid); struct fs_parameter; struct fc_log; struct ceph_options *ceph_alloc_options(void); int ceph_parse_mon_ips(const char *buf, size_t len, struct ceph_options *opt, struct fc_log *l, char delim); int ceph_parse_param(struct fs_parameter *param, struct ceph_options *opt, struct fc_log *l); int ceph_print_client_options(struct seq_file *m, struct ceph_client *client, bool show_all); extern void ceph_destroy_options(struct ceph_options *opt); extern int ceph_compare_options(struct ceph_options *new_opt, struct ceph_client *client); struct ceph_client *ceph_create_client(struct ceph_options *opt, void *private); struct ceph_entity_addr *ceph_client_addr(struct ceph_client *client); u64 ceph_client_gid(struct ceph_client *client); extern void ceph_destroy_client(struct ceph_client *client); extern void ceph_reset_client_addr(struct ceph_client *client); extern int __ceph_open_session(struct ceph_client *client, unsigned long started); extern int ceph_open_session(struct ceph_client *client); int ceph_wait_for_latest_osdmap(struct ceph_client *client, unsigned long timeout); /* pagevec.c */ extern void ceph_release_page_vector(struct page **pages, int num_pages); extern void ceph_put_page_vector(struct page **pages, int num_pages, bool dirty); extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags); extern int ceph_copy_user_to_page_vector(struct page **pages, const void __user *data, loff_t off, size_t len); extern void ceph_copy_to_page_vector(struct page **pages, const void *data, loff_t off, size_t len); extern void ceph_copy_from_page_vector(struct page **pages, void *data, loff_t off, size_t len); extern void ceph_zero_page_vector_range(int off, int len, struct page **pages); #endif /* _FS_CEPH_SUPER_H */
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