diff options
Diffstat (limited to 'include/linux/nfs_fs.h')
| -rw-r--r-- | include/linux/nfs_fs.h | 325 |
1 files changed, 164 insertions, 161 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index f4a0e4c218d..e30f6059ecd 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -5,34 +5,21 @@ * * OS-specific nfs filesystem definitions and declarations */ - #ifndef _LINUX_NFS_FS_H #define _LINUX_NFS_FS_H -#include <linux/magic.h> +#include <uapi/linux/nfs_fs.h> -/* Default timeout values */ -#define NFS_MAX_UDP_TIMEOUT (60*HZ) -#define NFS_MAX_TCP_TIMEOUT (600*HZ) /* - * When flushing a cluster of dirty pages, there can be different - * strategies: + * Enable dprintk() debugging support for nfs client. */ -#define FLUSH_SYNC 1 /* file being synced, or contention */ -#define FLUSH_STABLE 4 /* commit to stable storage */ -#define FLUSH_LOWPRI 8 /* low priority background flush */ -#define FLUSH_HIGHPRI 16 /* high priority memory reclaim flush */ -#define FLUSH_NOCOMMIT 32 /* Don't send the NFSv3/v4 COMMIT */ -#define FLUSH_INVALIDATE 64 /* Invalidate the page cache */ -#define FLUSH_NOWRITEPAGE 128 /* Don't call writepage() */ - -#ifdef __KERNEL__ +#ifdef CONFIG_NFS_DEBUG +# define NFS_DEBUG +#endif #include <linux/in.h> -#include <linux/kref.h> #include <linux/mm.h> -#include <linux/namei.h> #include <linux/pagemap.h> #include <linux/rbtree.h> #include <linux/rwsem.h> @@ -67,22 +54,50 @@ struct nfs_access_entry { int mask; }; +struct nfs_lockowner { + fl_owner_t l_owner; + pid_t l_pid; +}; + +#define NFS_IO_INPROGRESS 0 +struct nfs_io_counter { + unsigned long flags; + atomic_t io_count; +}; + +struct nfs_lock_context { + atomic_t count; + struct list_head list; + struct nfs_open_context *open_context; + struct nfs_lockowner lockowner; + struct nfs_io_counter io_count; +}; + struct nfs4_state; struct nfs_open_context { - atomic_t count; - struct path path; + struct nfs_lock_context lock_context; + struct dentry *dentry; struct rpc_cred *cred; struct nfs4_state *state; - fl_owner_t lockowner; - int mode; + fmode_t mode; unsigned long flags; #define NFS_CONTEXT_ERROR_WRITE (0) +#define NFS_CONTEXT_RESEND_WRITES (1) +#define NFS_CONTEXT_BAD (2) int error; struct list_head list; + struct nfs4_threshold *mdsthreshold; +}; +struct nfs_open_dir_context { + struct list_head list; + struct rpc_cred *cred; + unsigned long attr_gencount; __u64 dir_cookie; + __u64 dup_cookie; + signed char duped; }; /* @@ -121,14 +136,16 @@ struct nfs_inode { * * We need to revalidate the cached attrs for this inode if * - * jiffies - read_cache_jiffies > attrtimeo + * jiffies - read_cache_jiffies >= attrtimeo + * + * Please note the comparison is greater than or equal + * so that zero timeout values can be specified. */ unsigned long read_cache_jiffies; unsigned long attrtimeo; unsigned long attrtimeo_timestamp; - __u64 change_attr; /* v4 only */ - unsigned long last_updated; + unsigned long attr_gencount; /* "Generation counter" for the attribute cache. This is * bumped whenever we update the metadata on the * server. @@ -138,10 +155,6 @@ struct nfs_inode { struct rb_root access_cache; struct list_head access_cache_entry_lru; struct list_head access_cache_inode_lru; -#ifdef CONFIG_NFS_V3_ACL - struct posix_acl *acl_access; - struct posix_acl *acl_default; -#endif /* * This is the cookie verifier used for NFSv3 readdir @@ -149,13 +162,8 @@ struct nfs_inode { */ __be32 cookieverf[2]; - /* - * This is the list of dirty unwritten pages. - */ - struct radix_tree_root nfs_page_tree; - - unsigned long ncommit, - npages; + unsigned long npages; + struct nfs_mds_commit_info commit_info; /* Open contexts for shared mmap writes */ struct list_head open_files; @@ -166,14 +174,23 @@ struct nfs_inode { struct hlist_head silly_list; wait_queue_head_t waitqueue; -#ifdef CONFIG_NFS_V4 +#if IS_ENABLED(CONFIG_NFS_V4) struct nfs4_cached_acl *nfs4_acl; /* NFSv4 state */ struct list_head open_states; - struct nfs_delegation *delegation; - int delegation_state; + struct nfs_delegation __rcu *delegation; + fmode_t delegation_state; struct rw_semaphore rwsem; + + /* pNFS layout information */ + struct pnfs_layout_hdr *layout; #endif /* CONFIG_NFS_V4*/ + /* how many bytes have been written/read and how many bytes queued up */ + __u64 write_io; + __u64 read_io; +#ifdef CONFIG_NFS_FSCACHE + struct fscache_cookie *fscache; +#endif struct inode vfs_inode; }; @@ -187,15 +204,21 @@ struct nfs_inode { #define NFS_INO_INVALID_ACL 0x0010 /* cached acls are invalid */ #define NFS_INO_REVAL_PAGECACHE 0x0020 /* must revalidate pagecache */ #define NFS_INO_REVAL_FORCED 0x0040 /* force revalidation ignoring a delegation */ +#define NFS_INO_INVALID_LABEL 0x0080 /* cached label is invalid */ /* * Bit offsets in flags field */ -#define NFS_INO_REVALIDATING (0) /* revalidating attrs */ -#define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */ -#define NFS_INO_STALE (2) /* possible stale inode */ -#define NFS_INO_ACL_LRU_SET (3) /* Inode is on the LRU list */ -#define NFS_INO_MOUNTPOINT (4) /* inode is remote mountpoint */ +#define NFS_INO_ADVISE_RDPLUS (0) /* advise readdirplus */ +#define NFS_INO_STALE (1) /* possible stale inode */ +#define NFS_INO_ACL_LRU_SET (2) /* Inode is on the LRU list */ +#define NFS_INO_INVALIDATING (3) /* inode is being invalidated */ +#define NFS_INO_FLUSHING (4) /* inode is flushing out data */ +#define NFS_INO_FSCACHE (5) /* inode can be cached by FS-Cache */ +#define NFS_INO_FSCACHE_LOCK (6) /* FS-Cache cookie management lock */ +#define NFS_INO_COMMIT (7) /* inode is committing unstable writes */ +#define NFS_INO_LAYOUTCOMMIT (9) /* layoutcommit required */ +#define NFS_INO_LAYOUTCOMMITTING (10) /* layoutcommit inflight */ static inline struct nfs_inode *NFS_I(const struct inode *inode) { @@ -227,11 +250,6 @@ static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) return NFS_SERVER(inode)->nfs_client->rpc_ops; } -static inline __be32 *NFS_COOKIEVERF(const struct inode *inode) -{ - return NFS_I(inode)->cookieverf; -} - static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) { struct nfs_server *nfss = NFS_SERVER(inode); @@ -249,6 +267,15 @@ static inline int NFS_STALE(const struct inode *inode) return test_bit(NFS_INO_STALE, &NFS_I(inode)->flags); } +static inline struct fscache_cookie *nfs_i_fscache(struct inode *inode) +{ +#ifdef CONFIG_NFS_FSCACHE + return NFS_I(inode)->fscache; +#else + return NULL; +#endif +} + static inline __u64 NFS_FILEID(const struct inode *inode) { return NFS_I(inode)->fileid; @@ -275,11 +302,6 @@ static inline int nfs_server_capable(struct inode *inode, int cap) return NFS_SERVER(inode)->caps & cap; } -static inline int NFS_USE_READDIRPLUS(struct inode *inode) -{ - return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_I(inode)->flags); -} - static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) { dentry->d_time = verf; @@ -317,44 +339,90 @@ extern void nfs_zap_mapping(struct inode *inode, struct address_space *mapping); extern void nfs_zap_caches(struct inode *); extern void nfs_invalidate_atime(struct inode *); extern struct inode *nfs_fhget(struct super_block *, struct nfs_fh *, - struct nfs_fattr *); + struct nfs_fattr *, struct nfs4_label *); extern int nfs_refresh_inode(struct inode *, struct nfs_fattr *); extern int nfs_post_op_update_inode(struct inode *inode, struct nfs_fattr *fattr); extern int nfs_post_op_update_inode_force_wcc(struct inode *inode, struct nfs_fattr *fattr); extern int nfs_getattr(struct vfsmount *, struct dentry *, struct kstat *); -extern int nfs_permission(struct inode *, int, struct nameidata *); +extern void nfs_access_add_cache(struct inode *, struct nfs_access_entry *); +extern void nfs_access_set_mask(struct nfs_access_entry *, u32); +extern int nfs_permission(struct inode *, int); extern int nfs_open(struct inode *, struct file *); extern int nfs_release(struct inode *, struct file *); extern int nfs_attribute_timeout(struct inode *inode); +extern int nfs_attribute_cache_expired(struct inode *inode); extern int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode); extern int __nfs_revalidate_inode(struct nfs_server *, struct inode *); extern int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); -extern int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping); extern int nfs_setattr(struct dentry *, struct iattr *); extern void nfs_setattr_update_inode(struct inode *inode, struct iattr *attr); +extern void nfs_setsecurity(struct inode *inode, struct nfs_fattr *fattr, + struct nfs4_label *label); extern struct nfs_open_context *get_nfs_open_context(struct nfs_open_context *ctx); extern void put_nfs_open_context(struct nfs_open_context *ctx); -extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode); +extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, fmode_t mode); +extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, fmode_t f_mode); +extern void nfs_inode_attach_open_context(struct nfs_open_context *ctx); +extern void nfs_file_set_open_context(struct file *filp, struct nfs_open_context *ctx); +extern struct nfs_lock_context *nfs_get_lock_context(struct nfs_open_context *ctx); +extern void nfs_put_lock_context(struct nfs_lock_context *l_ctx); extern u64 nfs_compat_user_ino64(u64 fileid); +extern void nfs_fattr_init(struct nfs_fattr *fattr); +extern unsigned long nfs_inc_attr_generation_counter(void); -/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ -extern __be32 root_nfs_parse_addr(char *name); /*__init*/ +extern struct nfs_fattr *nfs_alloc_fattr(void); + +static inline void nfs_free_fattr(const struct nfs_fattr *fattr) +{ + kfree(fattr); +} + +extern struct nfs_fh *nfs_alloc_fhandle(void); -static inline void nfs_fattr_init(struct nfs_fattr *fattr) +static inline void nfs_free_fhandle(const struct nfs_fh *fh) { - fattr->valid = 0; - fattr->time_start = jiffies; + kfree(fh); } +#ifdef NFS_DEBUG +extern u32 _nfs_display_fhandle_hash(const struct nfs_fh *fh); +static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) +{ + return _nfs_display_fhandle_hash(fh); +} +extern void _nfs_display_fhandle(const struct nfs_fh *fh, const char *caption); +#define nfs_display_fhandle(fh, caption) \ + do { \ + if (unlikely(nfs_debug & NFSDBG_FACILITY)) \ + _nfs_display_fhandle(fh, caption); \ + } while (0) +#else +static inline u32 nfs_display_fhandle_hash(const struct nfs_fh *fh) +{ + return 0; +} +static inline void nfs_display_fhandle(const struct nfs_fh *fh, + const char *caption) +{ +} +#endif + +/* + * linux/fs/nfs/nfsroot.c + */ +extern int nfs_root_data(char **root_device, char **root_data); /*__init*/ +/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */ +extern __be32 root_nfs_parse_addr(char *name); /*__init*/ + /* * linux/fs/nfs/file.c */ -extern const struct inode_operations nfs_file_inode_operations; -#ifdef CONFIG_NFS_V3 -extern const struct inode_operations nfs3_file_inode_operations; -#endif /* CONFIG_NFS_V3 */ extern const struct file_operations nfs_file_operations; +#if IS_ENABLED(CONFIG_NFS_V4) +extern const struct file_operations nfs4_file_operations; +#endif /* CONFIG_NFS_V4 */ extern const struct address_space_operations nfs_file_aops; +extern const struct address_space_operations nfs_dir_aops; static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) { @@ -363,8 +431,12 @@ static inline struct nfs_open_context *nfs_file_open_context(struct file *filp) static inline struct rpc_cred *nfs_file_cred(struct file *file) { - if (file != NULL) - return nfs_file_open_context(file)->cred; + if (file != NULL) { + struct nfs_open_context *ctx = + nfs_file_open_context(file); + if (ctx) + return ctx->cred; + } return NULL; } @@ -387,27 +459,23 @@ extern int nfs3_removexattr (struct dentry *, const char *name); /* * linux/fs/nfs/direct.c */ -extern ssize_t nfs_direct_IO(int, struct kiocb *, const struct iovec *, loff_t, - unsigned long); +extern ssize_t nfs_direct_IO(int, struct kiocb *, struct iov_iter *, loff_t); extern ssize_t nfs_file_direct_read(struct kiocb *iocb, - const struct iovec *iov, unsigned long nr_segs, - loff_t pos); + struct iov_iter *iter, + loff_t pos, bool uio); extern ssize_t nfs_file_direct_write(struct kiocb *iocb, - const struct iovec *iov, unsigned long nr_segs, - loff_t pos); + struct iov_iter *iter, + loff_t pos, bool uio); /* * linux/fs/nfs/dir.c */ -extern const struct inode_operations nfs_dir_inode_operations; -#ifdef CONFIG_NFS_V3 -extern const struct inode_operations nfs3_dir_inode_operations; -#endif /* CONFIG_NFS_V3 */ extern const struct file_operations nfs_dir_operations; -extern struct dentry_operations nfs_dentry_operations; +extern const struct dentry_operations nfs_dentry_operations; extern void nfs_force_lookup_revalidate(struct inode *dir); -extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); +extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, + struct nfs_fattr *fattr, struct nfs4_label *label); extern int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags); extern void nfs_access_zap_cache(struct inode *inode); @@ -430,7 +498,6 @@ extern void nfs_unregister_sysctl(void); /* * linux/fs/nfs/namespace.c */ -extern struct list_head nfs_automount_list; extern const struct inode_operations nfs_mountpoint_inode_operations; extern const struct inode_operations nfs_referral_inode_operations; extern int nfs_mountpoint_expiry_timeout; @@ -439,8 +506,8 @@ extern void nfs_release_automount_timer(void); /* * linux/fs/nfs/unlink.c */ -extern int nfs_async_unlink(struct inode *dir, struct dentry *dentry); extern void nfs_complete_unlink(struct dentry *dentry, struct inode *); +extern void nfs_wait_on_sillyrename(struct dentry *dentry); extern void nfs_block_sillyrename(struct dentry *dentry); extern void nfs_unblock_sillyrename(struct dentry *dentry); @@ -452,23 +519,18 @@ extern int nfs_writepage(struct page *page, struct writeback_control *wbc); extern int nfs_writepages(struct address_space *, struct writeback_control *); extern int nfs_flush_incompatible(struct file *file, struct page *page); extern int nfs_updatepage(struct file *, struct page *, unsigned int, unsigned int); -extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *); -extern void nfs_writedata_release(void *); /* * Try to write back everything synchronously (but check the * return value!) */ -extern long nfs_sync_mapping_wait(struct address_space *, struct writeback_control *, int); extern int nfs_wb_all(struct inode *inode); -extern int nfs_wb_nocommit(struct inode *inode); extern int nfs_wb_page(struct inode *inode, struct page* page); extern int nfs_wb_page_cancel(struct inode *inode, struct page* page); -#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) +#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) extern int nfs_commit_inode(struct inode *, int); -extern struct nfs_write_data *nfs_commit_alloc(void); -extern void nfs_commit_free(struct nfs_write_data *wdata); -extern void nfs_commit_release(void *wdata); +extern struct nfs_commit_data *nfs_commitdata_alloc(void); +extern void nfs_commit_free(struct nfs_commit_data *data); #else static inline int nfs_commit_inode(struct inode *inode, int how) @@ -484,54 +546,32 @@ nfs_have_writebacks(struct inode *inode) } /* - * Allocate nfs_write_data structures - */ -extern struct nfs_write_data *nfs_writedata_alloc(unsigned int npages); - -/* * linux/fs/nfs/read.c */ extern int nfs_readpage(struct file *, struct page *); extern int nfs_readpages(struct file *, struct address_space *, struct list_head *, unsigned); -extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *); -extern void nfs_readdata_release(void *data); - -/* - * Allocate nfs_read_data structures - */ -extern struct nfs_read_data *nfs_readdata_alloc(unsigned int npages); +extern int nfs_readpage_async(struct nfs_open_context *, struct inode *, + struct page *); /* * linux/fs/nfs3proc.c */ #ifdef CONFIG_NFS_V3_ACL -extern struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type); -extern int nfs3_proc_setacl(struct inode *inode, int type, - struct posix_acl *acl); -extern int nfs3_proc_set_default_acl(struct inode *dir, struct inode *inode, - mode_t mode); -extern void nfs3_forget_cached_acls(struct inode *inode); +extern struct posix_acl *nfs3_get_acl(struct inode *inode, int type); +extern int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type); +extern int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, + struct posix_acl *dfacl); +extern const struct xattr_handler *nfs3_xattr_handlers[]; #else -static inline int nfs3_proc_set_default_acl(struct inode *dir, - struct inode *inode, - mode_t mode) +static inline int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, + struct posix_acl *dfacl) { return 0; } - -static inline void nfs3_forget_cached_acls(struct inode *inode) -{ -} #endif /* CONFIG_NFS_V3_ACL */ /* - * linux/fs/mount_clnt.c - */ -extern int nfs_mount(struct sockaddr *, size_t, char *, char *, - int, int, struct nfs_fh *); - -/* * inline functions */ @@ -551,52 +591,15 @@ nfs_fileid_to_ino_t(u64 fileid) return ino; } -/* NFS root */ - -extern void * nfs_root_data(void); - -#define nfs_wait_event(clnt, wq, condition) \ -({ \ - int __retval = wait_event_killable(wq, condition); \ - __retval; \ -}) - #define NFS_JUKEBOX_RETRY_TIME (5 * HZ) -#endif /* __KERNEL__ */ - -/* - * NFS debug flags - */ -#define NFSDBG_VFS 0x0001 -#define NFSDBG_DIRCACHE 0x0002 -#define NFSDBG_LOOKUPCACHE 0x0004 -#define NFSDBG_PAGECACHE 0x0008 -#define NFSDBG_PROC 0x0010 -#define NFSDBG_XDR 0x0020 -#define NFSDBG_FILE 0x0040 -#define NFSDBG_ROOT 0x0080 -#define NFSDBG_CALLBACK 0x0100 -#define NFSDBG_CLIENT 0x0200 -#define NFSDBG_MOUNT 0x0400 -#define NFSDBG_ALL 0xFFFF - -#ifdef __KERNEL__ - -/* - * Enable debugging support for nfs client. - * Requires RPC_DEBUG. - */ -#ifdef RPC_DEBUG -# define NFS_DEBUG -#endif # undef ifdebug # ifdef NFS_DEBUG # define ifdebug(fac) if (unlikely(nfs_debug & NFSDBG_##fac)) +# define NFS_IFDEBUG(x) x # else # define ifdebug(fac) if (0) +# define NFS_IFDEBUG(x) # endif -#endif /* __KERNEL */ - #endif |