#ifndef _LINUX_NFS_FS_H
#define _LINUX_NFS_FS_H
-#include <linux/config.h>
+#include <linux/magic.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)
+
+/*
+ * When flushing a cluster of dirty pages, there can be different
+ * strategies:
+ */
+#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 */
+
+#ifdef __KERNEL__
+
#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>
#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
-#define NFS_MAX_FILE_IO_BUFFER_SIZE 32768
-#define NFS_DEF_FILE_IO_BUFFER_SIZE 4096
+#include <linux/nfs_fs_sb.h>
-/*
- * superblock magic number for NFS
- */
-#define NFS_SUPER_MAGIC 0x6969
+#include <linux/rwsem.h>
+#include <linux/mempool.h>
/*
* These are the default flags for swap requests
#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 */
-
-#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 nfs4_state;
struct nfs_open_context {
atomic_t count;
+ struct vfsmount *vfsmnt;
struct dentry *dentry;
struct rpc_cred *cred;
struct nfs4_state *state;
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
* We need to revalidate the cached attrs for this inode if
*
* jiffies - read_cache_jiffies > attrtimeo
- *
- * and invalidate any cached data/flush out any dirty pages if
- * we find that
- *
- * mtime != read_cache_mtime
*/
unsigned long read_cache_jiffies;
unsigned long attrtimeo;
unsigned long attrtimeo_timestamp;
__u64 change_attr; /* v4 only */
+ unsigned long last_updated;
/* "Generation counter" for the attribute cache. This is
* bumped whenever we update the metadata on the
* server.
*/
atomic_t data_updates;
- struct nfs_access_entry cache_access;
+ 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;
* This is the cookie verifier used for NFSv3 readdir
* operations
*/
- __u32 cookieverf[2];
+ __be32 cookieverf[2];
/*
* This is the list of dirty unwritten pages.
#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 */
static inline struct nfs_inode *NFS_I(struct inode *inode)
{
#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_PROTO(inode) (NFS_SERVER(inode)->nfs_client->rpc_ops)
#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)
return atomic_read(&NFS_I(inode)->data_updates) != 0;
}
+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 void NFS_CACHEINV(struct inode *inode)
{
- if (!nfs_caches_unstable(inode)) {
- spin_lock(&inode->i_lock);
- NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
- spin_unlock(&inode->i_lock);
- }
+ if (!nfs_caches_unstable(inode))
+ nfs_mark_for_revalidate(inode);
}
static inline int nfs_server_capable(struct inode *inode, int cap)
static inline int nfs_verify_change_attribute(struct inode *inode, unsigned long chattr)
{
return !nfs_caches_unstable(inode)
- && chattr == NFS_I(inode)->cache_change_attribute;
+ && time_after_eq(chattr, NFS_I(inode)->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 struct inode *nfs_fhget(struct super_block *, struct nfs_fh *,
struct nfs_fattr *);
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_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_zap_cache(struct inode *inode);
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_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 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 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, int mode);
-extern void nfs_file_clear_open_context(struct file *filp);
+extern struct nfs_open_context *nfs_find_open_context(struct inode *inode, struct rpc_cred *cred, int mode);
/* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
extern u32 root_nfs_parse_addr(char *name); /*__init*/
+static inline void nfs_fattr_init(struct nfs_fattr *fattr)
+{
+ fattr->valid = 0;
+ fattr->time_start = jiffies;
+}
+
/*
* linux/fs/nfs/file.c
*/
#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;
+extern const struct address_space_operations nfs_file_aops;
static inline struct rpc_cred *nfs_file_cred(struct file *file)
{
*/
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_file_direct_read(struct kiocb *iocb,
+ const struct iovec *iov, unsigned long nr_segs,
+ loff_t pos);
+extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
+ const struct iovec *iov, unsigned long nr_segs,
+ loff_t pos);
/*
* linux/fs/nfs/dir.c
#ifdef CONFIG_NFS_V3
extern struct inode_operations nfs3_dir_inode_operations;
#endif /* CONFIG_NFS_V3 */
-extern struct file_operations nfs_dir_operations;
+extern const struct file_operations nfs_dir_operations;
extern struct dentry_operations nfs_dentry_operations;
extern int nfs_instantiate(struct dentry *dentry, struct nfs_fh *fh, struct nfs_fattr *fattr);
extern struct inode_operations nfs_symlink_inode_operations;
/*
+ * linux/fs/nfs/sysctl.c
+ */
+#ifdef CONFIG_SYSCTL
+extern int nfs_register_sysctl(void);
+extern void nfs_unregister_sysctl(void);
+#else
+#define nfs_register_sysctl() 0
+#define nfs_unregister_sysctl() do { } while(0)
+#endif
+
+/*
+ * linux/fs/nfs/namespace.c
+ */
+extern struct list_head nfs_automount_list;
+extern struct inode_operations nfs_mountpoint_inode_operations;
+extern 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 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);
+extern int nfs_writeback_done(struct rpc_task *, struct nfs_write_data *);
+extern void nfs_writedata_release(void *);
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
-extern void nfs_commit_done(struct rpc_task *);
+struct nfs_write_data *nfs_commit_alloc(void);
+void nfs_commit_free(struct nfs_write_data *p);
#endif
/*
* Try to write back everything synchronously (but check the
* return value!)
*/
-extern int nfs_sync_inode(struct inode *, unsigned long, unsigned int, int);
+extern int nfs_sync_inode_wait(struct inode *, unsigned long, unsigned int, int);
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
extern int nfs_commit_inode(struct inode *, int);
+extern void nfs_commit_release(void *wdata);
#else
static inline int
nfs_commit_inode(struct inode *inode, int how)
static inline int
nfs_wb_all(struct inode *inode)
{
- int error = nfs_sync_inode(inode, 0, 0, FLUSH_WAIT);
+ int error = nfs_sync_inode_wait(inode, 0, 0, 0);
return (error < 0) ? error : 0;
}
*/
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);
+ int error = nfs_sync_inode_wait(inode, page->index, 1,
+ how | FLUSH_STABLE);
return (error < 0) ? error : 0;
}
}
/*
- * Allocate and free nfs_write_data structures
+ * Allocate nfs_write_data structures
*/
-extern mempool_t *nfs_wdata_mempool;
-
-static inline struct nfs_write_data *nfs_writedata_alloc(void)
-{
- struct nfs_write_data *p = mempool_alloc(nfs_wdata_mempool, SLAB_NOFS);
- if (p) {
- memset(p, 0, sizeof(*p));
- INIT_LIST_HEAD(&p->pages);
- }
- return p;
-}
-
-static inline void nfs_writedata_free(struct nfs_write_data *p)
-{
- mempool_free(p, nfs_wdata_mempool);
-}
+extern struct nfs_write_data *nfs_writedata_alloc(size_t len);
/*
* 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 *);
+extern int nfs_readpage_result(struct rpc_task *, struct nfs_read_data *);
+extern void nfs_readdata_release(void *data);
/*
- * Allocate and free nfs_read_data structures
+ * Allocate nfs_read_data structures
*/
-extern mempool_t *nfs_rdata_mempool;
-
-static inline struct nfs_read_data *nfs_readdata_alloc(void)
-{
- struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, SLAB_NOFS);
- if (p)
- memset(p, 0, sizeof(*p));
- return p;
-}
-
-static inline void nfs_readdata_free(struct nfs_read_data *p)
-{
- mempool_free(p, nfs_rdata_mempool);
-}
-
-extern void nfs_readdata_release(struct rpc_task *task);
+extern struct nfs_read_data *nfs_readdata_alloc(size_t len);
/*
* linux/fs/nfs3proc.c
#define NFSDBG_FILE 0x0040
#define NFSDBG_ROOT 0x0080
#define NFSDBG_CALLBACK 0x0100
+#define NFSDBG_CLIENT 0x0200
#define NFSDBG_ALL 0xFFFF
#ifdef __KERNEL__
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