diff options
Diffstat (limited to 'include/linux/nfs_fs.h')
| -rw-r--r-- | include/linux/nfs_fs.h | 620 |
1 files changed, 290 insertions, 330 deletions
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h index 547d649b274..e30f6059ecd 100644 --- a/include/linux/nfs_fs.h +++ b/include/linux/nfs_fs.h @@ -5,19 +5,26 @@ * * OS-specific nfs filesystem definitions and declarations */ - #ifndef _LINUX_NFS_FS_H #define _LINUX_NFS_FS_H -#include <linux/config.h> +#include <uapi/linux/nfs_fs.h> + + +/* + * Enable dprintk() debugging support for nfs client. + */ +#ifdef CONFIG_NFS_DEBUG +# define NFS_DEBUG +#endif + #include <linux/in.h> #include <linux/mm.h> #include <linux/pagemap.h> +#include <linux/rbtree.h> #include <linux/rwsem.h> #include <linux/wait.h> -#include <linux/nfs_fs_sb.h> - #include <linux/sunrpc/debug.h> #include <linux/sunrpc/auth.h> #include <linux/sunrpc/clnt.h> @@ -27,25 +34,9 @@ #include <linux/nfs3.h> #include <linux/nfs4.h> #include <linux/nfs_xdr.h> -#include <linux/rwsem.h> -#include <linux/mempool.h> - -/* - * Enable debugging support for nfs client. - * Requires RPC_DEBUG. - */ -#ifdef RPC_DEBUG -# define NFS_DEBUG -#endif - -/* Default timeout values */ -#define NFS_MAX_UDP_TIMEOUT (60*HZ) -#define NFS_MAX_TCP_TIMEOUT (600*HZ) +#include <linux/nfs_fs_sb.h> -/* - * superblock magic number for NFS - */ -#define NFS_SUPER_MAGIC 0x6969 +#include <linux/mempool.h> /* * These are the default flags for swap requests @@ -53,41 +44,60 @@ #define NFS_RPC_SWAPFLAGS (RPC_TASK_SWAPPER|RPC_TASK_ROOTCREDS) /* - * When flushing a cluster of dirty pages, there can be different - * strategies: - */ -#define FLUSH_AGING 0 /* only flush old buffers */ -#define FLUSH_SYNC 1 /* file being synced, or contention */ -#define FLUSH_WAIT 2 /* wait for completion */ -#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 */ - -#ifdef __KERNEL__ - -/* * NFSv3/v4 Access mode cache entry */ struct nfs_access_entry { + struct rb_node rb_node; + struct list_head lru; unsigned long jiffies; struct rpc_cred * cred; 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 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; }; /* @@ -118,8 +128,7 @@ struct nfs_inode { unsigned long cache_validity; /* bit mask */ /* - * read_cache_jiffies is when we started read-caching this inode, - * and read_cache_mtime is the mtime of the inode at that time. + * read_cache_jiffies is when we started read-caching this inode. * attrtimeo is for how long the cached information is assumed * to be valid. A successful attribute revalidation doubles * attrtimeo (up to acregmax/acdirmax), a failure resets it to @@ -127,65 +136,61 @@ struct nfs_inode { * * We need to revalidate the cached attrs for this inode if * - * jiffies - read_cache_jiffies > attrtimeo + * jiffies - read_cache_jiffies >= attrtimeo * - * and invalidate any cached data/flush out any dirty pages if - * we find that - * - * mtime != read_cache_mtime + * 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. */ unsigned long cache_change_attribute; - /* - * Counter indicating the number of outstanding requests that - * will cause a file data update. - */ - atomic_t data_updates; - struct nfs_access_entry cache_access; -#ifdef CONFIG_NFS_V3_ACL - struct posix_acl *acl_access; - struct posix_acl *acl_default; -#endif + struct rb_root access_cache; + struct list_head access_cache_entry_lru; + struct list_head access_cache_inode_lru; /* * This is the cookie verifier used for NFSv3 readdir * operations */ - __u32 cookieverf[2]; - - /* - * This is the list of dirty unwritten pages. - */ - spinlock_t req_lock; - struct list_head dirty; - struct list_head commit; - struct radix_tree_root nfs_page_tree; + __be32 cookieverf[2]; - unsigned int ndirty, - ncommit, - npages; + unsigned long npages; + struct nfs_mds_commit_info commit_info; /* Open contexts for shared mmap writes */ struct list_head open_files; -#ifdef CONFIG_NFS_V4 + /* Number of in-flight sillydelete RPC calls */ + atomic_t silly_count; + /* List of deferred sillydelete requests */ + struct hlist_head silly_list; + wait_queue_head_t waitqueue; + +#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; }; @@ -198,58 +203,98 @@ struct nfs_inode { #define NFS_INO_INVALID_ACCESS 0x0008 /* cached access cred invalid */ #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 */ - -static inline struct nfs_inode *NFS_I(struct inode *inode) +#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) { return container_of(inode, struct nfs_inode, vfs_inode); } -#define NFS_SB(s) ((struct nfs_server *)(s->s_fs_info)) - -#define NFS_FH(inode) (&NFS_I(inode)->fh) -#define NFS_SERVER(inode) (NFS_SB(inode->i_sb)) -#define NFS_CLIENT(inode) (NFS_SERVER(inode)->client) -#define NFS_PROTO(inode) (NFS_SERVER(inode)->rpc_ops) -#define NFS_ADDR(inode) (RPC_PEERADDR(NFS_CLIENT(inode))) -#define NFS_COOKIEVERF(inode) (NFS_I(inode)->cookieverf) -#define NFS_READTIME(inode) (NFS_I(inode)->read_cache_jiffies) -#define NFS_CHANGE_ATTR(inode) (NFS_I(inode)->change_attr) -#define NFS_ATTRTIMEO(inode) (NFS_I(inode)->attrtimeo) -#define NFS_MINATTRTIMEO(inode) \ - (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmin \ - : NFS_SERVER(inode)->acregmin) -#define NFS_MAXATTRTIMEO(inode) \ - (S_ISDIR(inode->i_mode)? NFS_SERVER(inode)->acdirmax \ - : NFS_SERVER(inode)->acregmax) -#define NFS_ATTRTIMEO_UPDATE(inode) (NFS_I(inode)->attrtimeo_timestamp) - -#define NFS_FLAGS(inode) (NFS_I(inode)->flags) -#define NFS_STALE(inode) (test_bit(NFS_INO_STALE, &NFS_FLAGS(inode))) - -#define NFS_FILEID(inode) (NFS_I(inode)->fileid) - -static inline int nfs_caches_unstable(struct inode *inode) + +static inline struct nfs_server *NFS_SB(const struct super_block *s) { - return atomic_read(&NFS_I(inode)->data_updates) != 0; + return (struct nfs_server *)(s->s_fs_info); } -static inline void nfs_mark_for_revalidate(struct inode *inode) +static inline struct nfs_fh *NFS_FH(const struct inode *inode) { - spin_lock(&inode->i_lock); - NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS; - spin_unlock(&inode->i_lock); + return &NFS_I(inode)->fh; +} + +static inline struct nfs_server *NFS_SERVER(const struct inode *inode) +{ + return NFS_SB(inode->i_sb); +} + +static inline struct rpc_clnt *NFS_CLIENT(const struct inode *inode) +{ + return NFS_SERVER(inode)->client; } -static inline void NFS_CACHEINV(struct inode *inode) +static inline const struct nfs_rpc_ops *NFS_PROTO(const struct inode *inode) { - if (!nfs_caches_unstable(inode)) - nfs_mark_for_revalidate(inode); + return NFS_SERVER(inode)->nfs_client->rpc_ops; +} + +static inline unsigned NFS_MINATTRTIMEO(const struct inode *inode) +{ + struct nfs_server *nfss = NFS_SERVER(inode); + return S_ISDIR(inode->i_mode) ? nfss->acdirmin : nfss->acregmin; +} + +static inline unsigned NFS_MAXATTRTIMEO(const struct inode *inode) +{ + struct nfs_server *nfss = NFS_SERVER(inode); + return S_ISDIR(inode->i_mode) ? nfss->acdirmax : nfss->acregmax; +} + +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; +} + +static inline void set_nfs_fileid(struct inode *inode, __u64 fileid) +{ + NFS_I(inode)->fileid = fileid; +} + +static inline void nfs_mark_for_revalidate(struct inode *inode) +{ + struct nfs_inode *nfsi = NFS_I(inode); + + spin_lock(&inode->i_lock); + nfsi->cache_validity |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS; + if (S_ISDIR(inode->i_mode)) + nfsi->cache_validity |= NFS_INO_REVAL_PAGECACHE|NFS_INO_INVALID_DATA; + spin_unlock(&inode->i_lock); } static inline int nfs_server_capable(struct inode *inode, int cap) @@ -257,93 +302,140 @@ 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) +static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf) { - return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode)); + dentry->d_time = verf; } /** * nfs_save_change_attribute - Returns the inode attribute change cookie - * @inode - pointer to inode + * @dir - pointer to parent directory inode * The "change attribute" is updated every time we finish an operation * that will result in a metadata change on the server. */ -static inline long nfs_save_change_attribute(struct inode *inode) +static inline unsigned long nfs_save_change_attribute(struct inode *dir) { - return NFS_I(inode)->cache_change_attribute; + return NFS_I(dir)->cache_change_attribute; } /** - * nfs_verify_change_attribute - Detects NFS inode cache updates - * @inode - pointer to inode + * nfs_verify_change_attribute - Detects NFS remote directory changes + * @dir - pointer to parent directory inode * @chattr - previously saved change attribute - * Return "false" if metadata has been updated (or is in the process of - * being updated) since the change attribute was saved. + * Return "false" if the verifiers doesn't match the change attribute. + * This would usually indicate that the directory contents have changed on + * the server, and that any dentries need revalidating. */ -static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr) +static inline int nfs_verify_change_attribute(struct inode *dir, unsigned long chattr) { - return !nfs_caches_unstable(inode) - && time_after_eq(chattr, NFS_I(inode)->cache_change_attribute); + return chattr == NFS_I(dir)->cache_change_attribute; } /* * linux/fs/nfs/inode.c */ extern int nfs_sync_mapping(struct address_space *mapping); +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 int nfs_access_get_cached(struct inode *, struct rpc_cred *, struct nfs_access_entry *); 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 void nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping); +extern int nfs_revalidate_mapping(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_begin_attr_update(struct inode *); -extern void nfs_end_attr_update(struct inode *); -extern void nfs_begin_data_update(struct inode *); -extern void nfs_end_data_update(struct inode *); -extern struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry, struct rpc_cred *cred); +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, 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_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode); -extern void nfs_file_clear_open_context(struct file *filp); +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 u32 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_free_fhandle(const struct nfs_fh *fh) +{ + kfree(fh); +} -static inline void nfs_fattr_init(struct nfs_fattr *fattr) +#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) { - fattr->valid = 0; - fattr->time_start = jiffies; } +#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 struct inode_operations nfs_file_inode_operations; -#ifdef CONFIG_NFS_V3 -extern struct inode_operations nfs3_file_inode_operations; -#endif /* CONFIG_NFS_V3 */ -extern struct file_operations nfs_file_operations; -extern struct address_space_operations nfs_file_aops; +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) +{ + return filp->private_data; +} static inline struct rpc_cred *nfs_file_cred(struct file *file) { if (file != NULL) { - struct nfs_open_context *ctx; - - ctx = (struct nfs_open_context*)file->private_data; - return ctx->cred; + struct nfs_open_context *ctx = + nfs_file_open_context(file); + if (ctx) + return ctx->cred; } return NULL; } @@ -367,29 +459,30 @@ 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_file_direct_read(struct kiocb *iocb, char __user *buf, - size_t count, loff_t pos); -extern ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos); +extern ssize_t nfs_direct_IO(int, struct kiocb *, struct iov_iter *, loff_t); +extern ssize_t nfs_file_direct_read(struct kiocb *iocb, + struct iov_iter *iter, + loff_t pos, bool uio); +extern ssize_t nfs_file_direct_write(struct kiocb *iocb, + struct iov_iter *iter, + loff_t pos, bool uio); /* * linux/fs/nfs/dir.c */ -extern struct inode_operations nfs_dir_inode_operations; -#ifdef CONFIG_NFS_V3 -extern struct inode_operations nfs3_dir_inode_operations; -#endif /* CONFIG_NFS_V3 */ -extern struct file_operations nfs_dir_operations; -extern struct dentry_operations nfs_dentry_operations; +extern const struct file_operations nfs_dir_operations; +extern const struct dentry_operations nfs_dentry_operations; -extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr); +extern void nfs_force_lookup_revalidate(struct inode *dir); +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); /* * linux/fs/nfs/symlink.c */ -extern struct inode_operations nfs_symlink_inode_operations; +extern const struct inode_operations nfs_symlink_inode_operations; /* * linux/fs/nfs/sysctl.c @@ -398,38 +491,46 @@ extern struct inode_operations nfs_symlink_inode_operations; extern int nfs_register_sysctl(void); extern void nfs_unregister_sysctl(void); #else -#define nfs_register_sysctl() do { } while(0) +#define nfs_register_sysctl() 0 #define nfs_unregister_sysctl() do { } while(0) #endif /* + * linux/fs/nfs/namespace.c + */ +extern const struct inode_operations nfs_mountpoint_inode_operations; +extern const struct inode_operations nfs_referral_inode_operations; +extern int nfs_mountpoint_expiry_timeout; +extern void nfs_release_automount_timer(void); + +/* * linux/fs/nfs/unlink.c */ -extern int nfs_async_unlink(struct dentry *); -extern void nfs_complete_unlink(struct 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); /* * linux/fs/nfs/write.c */ +extern int nfs_congestion_kb; 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 void nfs_writeback_done(struct rpc_task *task, void *data); -extern void nfs_writedata_release(void *data); - -#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) -extern void nfs_commit_done(struct rpc_task *, void *data); -extern void nfs_commit_release(void *data); -#endif /* * Try to write back everything synchronously (but check the * return value!) */ -extern int nfs_sync_inode(struct inode *, unsigned long, unsigned int, int); -#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4) +extern int nfs_wb_all(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 IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) extern int nfs_commit_inode(struct inode *, int); +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) @@ -444,148 +545,40 @@ nfs_have_writebacks(struct inode *inode) return NFS_I(inode)->npages != 0; } -static inline int -nfs_wb_all(struct inode *inode) -{ - int error = nfs_sync_inode(inode, 0, 0, FLUSH_WAIT); - return (error < 0) ? error : 0; -} - -/* - * Write back all requests on one page - we do this before reading it. - */ -static inline int nfs_wb_page_priority(struct inode *inode, struct page* page, int how) -{ - int error = nfs_sync_inode(inode, page->index, 1, - how | FLUSH_WAIT | FLUSH_STABLE); - return (error < 0) ? error : 0; -} - -static inline int nfs_wb_page(struct inode *inode, struct page* page) -{ - return nfs_wb_page_priority(inode, page, 0); -} - -/* - * Allocate and free nfs_write_data structures - */ -extern mempool_t *nfs_wdata_mempool; - -static inline struct nfs_write_data *nfs_writedata_alloc(unsigned int pagecount) -{ - struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, SLAB_NOFS); - - if (p) { - memset(p, 0, sizeof(*p)); - INIT_LIST_HEAD(&p->pages); - if (pagecount < NFS_PAGEVEC_SIZE) - p->pagevec = &p->page_array[0]; - else { - size_t size = ++pagecount * sizeof(struct page *); - p->pagevec = kmalloc(size, GFP_NOFS); - if (p->pagevec) { - memset(p->pagevec, 0, size); - } else { - mempool_free(p, nfs_wdata_mempool); - p = NULL; - } - } - } - return p; -} - -static inline void nfs_writedata_free(struct nfs_write_data *p) -{ - if (p && (p->pagevec != &p->page_array[0])) - kfree(p->pagevec); - mempool_free(p, nfs_wdata_mempool); -} - /* * 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 void nfs_readpage_result(struct rpc_task *, void *); -extern void nfs_readdata_release(void *data); - - -/* - * Allocate and free nfs_read_data structures - */ -extern mempool_t *nfs_rdata_mempool; - -static inline struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount) -{ - struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, SLAB_NOFS); - - if (p) { - memset(p, 0, sizeof(*p)); - INIT_LIST_HEAD(&p->pages); - if (pagecount < NFS_PAGEVEC_SIZE) - p->pagevec = &p->page_array[0]; - else { - size_t size = ++pagecount * sizeof(struct page *); - p->pagevec = kmalloc(size, GFP_NOFS); - if (p->pagevec) { - memset(p->pagevec, 0, size); - } else { - mempool_free(p, nfs_rdata_mempool); - p = NULL; - } - } - } - return p; -} - -static inline void nfs_readdata_free(struct nfs_read_data *p) -{ - if (p && (p->pagevec != &p->page_array[0])) - kfree(p->pagevec); - mempool_free(p, nfs_rdata_mempool); -} +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 - * (Used only by nfsroot module) - */ -extern int nfsroot_mount(struct sockaddr_in *, char *, struct nfs_fh *, - int, int); - -/* * inline functions */ -static inline loff_t -nfs_size_to_loff_t(__u64 size) +static inline loff_t nfs_size_to_loff_t(__u64 size) { - loff_t maxsz = (((loff_t) ULONG_MAX) << PAGE_CACHE_SHIFT) + PAGE_CACHE_SIZE - 1; - if (size > maxsz) - return maxsz; + if (size > (__u64) OFFSET_MAX - 1) + return OFFSET_MAX - 1; return (loff_t) size; } @@ -598,48 +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 = 0; \ - if (clnt->cl_intr) { \ - sigset_t oldmask; \ - rpc_clnt_sigmask(clnt, &oldmask); \ - __retval = wait_event_interruptible(wq, condition); \ - rpc_clnt_sigunmask(clnt, &oldmask); \ - } else \ - wait_event(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_ALL 0xFFFF - -#ifdef __KERNEL__ # 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 |