Merge git://git.linux-nfs.org/pub/linux/nfs-2.6

* git://git.linux-nfs.org/pub/linux/nfs-2.6: (51 commits)
  nfs: remove nfs_put_link()
  nfs-build-fix-99
  git-nfs-build-fixes
  Merge branch 'odirect'
  NFS: alloc nfs_read/write_data as direct I/O is scheduled
  NFS: Eliminate nfs_get_user_pages()
  NFS: refactor nfs_direct_free_user_pages
  NFS: remove user_addr, user_count, and pos from nfs_direct_req
  NFS: "open code" the NFS direct write rescheduler
  NFS: Separate functions for counting outstanding NFS direct I/Os
  NLM: Fix reclaim races
  NLM: sem to mutex conversion
  locks.c: add the fl_owner to nlm_compare_locks
  NFS: Display the chosen RPCSEC_GSS security flavour in /proc/mounts
  NFS: Split fs/nfs/inode.c
  NFS: Fix typo in nfs_do_clone_mount()
  NFS: Fix compile errors introduced by referrals patches
  NFSv4: Ensure that referral mounts bind to a reserved port
  NFSv4: A root pathname is sent as a zero component4
  NFSv4: Follow a referral
  ...

9 files changed, 109 insertions, 38 deletions

diff --git a/include/linux/fs.h b/include/linux/fs.h
index dba4cbd157ee..2d8b348c1192 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1100,7 +1100,7 @@ struct super_operations {
         int (*statfs) (struct dentry *, struct kstatfs *);
         int (*remount_fs) (struct super_block *, int *, char *);
         void (*clear_inode) (struct inode *);
-        void (*umount_begin) (struct super_block *);
+        void (*umount_begin) (struct vfsmount *, int);
 
         int (*show_options)(struct seq_file *, struct vfsmount *);
         int (*show_stats)(struct seq_file *, struct vfsmount *);
@@ -1767,7 +1767,7 @@ extern struct inode_operations simple_dir_inode_operations;
 struct tree_descr { char *name; const struct file_operations *ops; int mode; };
 struct dentry *d_alloc_name(struct dentry *, const char *);
 extern int simple_fill_super(struct super_block *, int, struct tree_descr *);
-extern int simple_pin_fs(char *name, struct vfsmount **mount, int *count);
+extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count);
 extern void simple_release_fs(struct vfsmount **mount, int *count);
 
 extern ssize_t simple_read_from_buffer(void __user *, size_t, loff_t *, const void *, size_t);
diff --git a/include/linux/lockd/lockd.h b/include/linux/lockd/lockd.h
index a8876bc6513b..aa4fe905bb4d 100644
--- a/include/linux/lockd/lockd.h
+++ b/include/linux/lockd/lockd.h
@@ -49,11 +49,12 @@ struct nlm_host {
                                 h_killed     : 1,
                                 h_monitored  : 1;
         wait_queue_head_t       h_gracewait;    /* wait while reclaiming */
+        struct rw_semaphore     h_rwsem;        /* Reboot recovery lock */
         u32                     h_state;        /* pseudo-state counter */
         u32                     h_nsmstate;     /* true remote NSM state */
         u32                     h_pidcount;     /* Pseudopids */
         atomic_t                h_count;        /* reference count */
-        struct semaphore        h_sema;         /* mutex for pmap binding */
+        struct mutex            h_mutex;        /* mutex for pmap binding */
         unsigned long           h_nextrebind;   /* next portmap call */
         unsigned long           h_expires;      /* eligible for GC */
         struct list_head        h_lockowners;   /* Lockowners for the client */
@@ -219,6 +220,7 @@ static __inline__ int
 nlm_compare_locks(const struct file_lock *fl1, const struct file_lock *fl2)
 {
         return  fl1->fl_pid   == fl2->fl_pid
+             && fl1->fl_owner == fl2->fl_owner
              && fl1->fl_start == fl2->fl_start
              && fl1->fl_end   == fl2->fl_end
              &&(fl1->fl_type  == fl2->fl_type || fl2->fl_type == F_UNLCK);
diff --git a/include/linux/mount.h b/include/linux/mount.h
index 60718f12caa9..403d1a97c512 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -28,6 +28,8 @@ struct namespace;
 #define MNT_NOATIME     0x08
 #define MNT_NODIRATIME  0x10
 
+#define MNT_SHRINKABLE  0x100
+
 #define MNT_SHARED      0x1000  /* if the vfsmount is a shared mount */
 #define MNT_UNBINDABLE  0x2000  /* if the vfsmount is a unbindable mount */
 #define MNT_PNODE_MASK  0x3000  /* propogation flag mask */
@@ -78,12 +80,18 @@ extern struct vfsmount *alloc_vfsmnt(const char *name);
 extern struct vfsmount *do_kern_mount(const char *fstype, int flags,
                                       const char *name, void *data);
 
+struct file_system_type;
+extern struct vfsmount *vfs_kern_mount(struct file_system_type *type,
+                                      int flags, const char *name,
+                                      void *data);
+
 struct nameidata;
 
 extern int do_add_mount(struct vfsmount *newmnt, struct nameidata *nd,
                         int mnt_flags, struct list_head *fslist);
 
 extern void mark_mounts_for_expiry(struct list_head *mounts);
+extern void shrink_submounts(struct vfsmount *mountpoint, struct list_head *mounts);
 
 extern spinlock_t vfsmount_lock;
 extern dev_t name_to_dev_t(char *name);
diff --git a/include/linux/nfs4.h b/include/linux/nfs4.h
index 1059e6d69d3b..5f681d534295 100644
--- a/include/linux/nfs4.h
+++ b/include/linux/nfs4.h
@@ -384,6 +384,7 @@ enum {
         NFSPROC4_CLNT_DELEGRETURN,
         NFSPROC4_CLNT_GETACL,
         NFSPROC4_CLNT_SETACL,
+        NFSPROC4_CLNT_FS_LOCATIONS,
 };
 
 #endif
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 7e079f8ce18b..0a1740b2532e 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -9,6 +9,27 @@
 #ifndef _LINUX_NFS_FS_H
 #define _LINUX_NFS_FS_H
 
+#include <linux/config.h>
+#include <linux/in.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/rwsem.h>
+#include <linux/wait.h>
+
+#include <linux/sunrpc/debug.h>
+#include <linux/sunrpc/auth.h>
+#include <linux/sunrpc/clnt.h>
+
+#include <linux/nfs.h>
+#include <linux/nfs2.h>
+#include <linux/nfs3.h>
+#include <linux/nfs4.h>
+#include <linux/nfs_xdr.h>
+
+#include <linux/nfs_fs_sb.h>
+
+#include <linux/rwsem.h>
+#include <linux/mempool.h>
 
 /*
  * Enable debugging support for nfs client.
@@ -41,27 +62,9 @@
 #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/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/nfs.h>
-#include <linux/nfs2.h>
-#include <linux/nfs3.h>
-#include <linux/nfs4.h>
-#include <linux/nfs_xdr.h>
-#include <linux/rwsem.h>
-#include <linux/mempool.h>
 
 /*
  * NFSv3/v4 Access mode cache entry
@@ -233,8 +236,12 @@ static inline int nfs_caches_unstable(struct inode *inode)
 
 static inline void nfs_mark_for_revalidate(struct inode *inode)
 {
+        struct nfs_inode *nfsi = NFS_I(inode);
+
         spin_lock(&inode->i_lock);
-        NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ATTR | NFS_INO_INVALID_ACCESS;
+        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);
 }
 
@@ -296,7 +303,7 @@ 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 *);
@@ -306,6 +313,10 @@ extern void nfs_end_data_update(struct inode *);
 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 vfsmount *nfs_do_submount(const struct vfsmount *mnt_parent,
+                                        const struct dentry *dentry,
+                                        struct nfs_fh *fh,
+                                        struct nfs_fattr *fattr);
 
 /* linux/net/ipv4/ipconfig.c: trims ip addr off front of name, too. */
 extern u32 root_nfs_parse_addr(char *name); /*__init*/
@@ -392,6 +403,15 @@ extern void nfs_unregister_sysctl(void);
 #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 *);
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 65dec21af774..6b4a13c79474 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -35,6 +35,7 @@ struct nfs_server {
         char *                  hostname;       /* remote hostname */
         struct nfs_fh           fh;
         struct sockaddr_in      addr;
+        struct nfs_fsid         fsid;
         unsigned long           mount_time;     /* when this fs was mounted */
 #ifdef CONFIG_NFS_V4
         /* Our own IP address, as a null-terminated string.
diff --git a/include/linux/nfs_page.h b/include/linux/nfs_page.h
index 66e2ed658527..1f7bd287c230 100644
--- a/include/linux/nfs_page.h
+++ b/include/linux/nfs_page.h
@@ -13,7 +13,6 @@
 #include <linux/list.h>
 #include <linux/pagemap.h>
 #include <linux/wait.h>
-#include <linux/nfs_fs_sb.h>
 #include <linux/sunrpc/auth.h>
 #include <linux/nfs_xdr.h>
 
@@ -63,8 +62,8 @@ extern	void nfs_release_request(struct nfs_page *req);
 
 extern  int nfs_scan_lock_dirty(struct nfs_inode *nfsi, struct list_head *dst,
                                 unsigned long idx_start, unsigned int npages);
-extern  int nfs_scan_list(struct list_head *, struct list_head *,
-                          unsigned long, unsigned int);
+extern  int nfs_scan_list(struct nfs_inode *nfsi, struct list_head *head, struct list_head *dst,
+                          unsigned long idx_start, unsigned int npages);
 extern  int nfs_coalesce_requests(struct list_head *, struct list_head *,
                                   unsigned int);
 extern  int nfs_wait_on_request(struct nfs_page *);
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 7fafc4c546b7..7c7320fa51aa 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -14,11 +14,19 @@
 #define NFS_DEF_FILE_IO_SIZE    (4096U)
 #define NFS_MIN_FILE_IO_SIZE    (1024U)
 
-struct nfs4_fsid {
-        __u64 major;
-        __u64 minor;
+struct nfs_fsid {
+        uint64_t                major;
+        uint64_t                minor;
 };
 
+/*
+ * Helper for checking equality between 2 fsids.
+ */
+static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
+{
+        return a->major == b->major && a->minor == b->minor;
+}
+
 struct nfs_fattr {
         unsigned short          valid;          /* which fields are valid */
         __u64                   pre_size;       /* pre_op_attr.size       */
@@ -40,10 +48,7 @@ struct nfs_fattr {
                 } nfs3;
         } du;
         dev_t                   rdev;
-        union {
-                __u64           nfs3;           /* also nfs2 */
-                struct nfs4_fsid nfs4;
-        } fsid_u;
+        struct nfs_fsid         fsid;
         __u64                   fileid;
         struct timespec         atime;
         struct timespec         mtime;
@@ -57,8 +62,8 @@ struct nfs_fattr {
 #define NFS_ATTR_WCC            0x0001          /* pre-op WCC data    */
 #define NFS_ATTR_FATTR          0x0002          /* post-op attributes */
 #define NFS_ATTR_FATTR_V3       0x0004          /* NFSv3 attributes */
-#define NFS_ATTR_FATTR_V4       0x0008
-#define NFS_ATTR_PRE_CHANGE     0x0010
+#define NFS_ATTR_FATTR_V4       0x0008          /* NFSv4 change attribute */
+#define NFS_ATTR_FATTR_V4_REFERRAL      0x0010          /* NFSv4 referral */
 
 /*
  * Info on the file system
@@ -675,6 +680,40 @@ struct nfs4_server_caps_res {
         u32                             has_symlinks;
 };
 
+struct nfs4_string {
+        unsigned int len;
+        char *data;
+};
+
+#define NFS4_PATHNAME_MAXCOMPONENTS 512
+struct nfs4_pathname {
+        unsigned int ncomponents;
+        struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
+};
+
+#define NFS4_FS_LOCATION_MAXSERVERS 10
+struct nfs4_fs_location {
+        unsigned int nservers;
+        struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
+        struct nfs4_pathname rootpath;
+};
+
+#define NFS4_FS_LOCATIONS_MAXENTRIES 10
+struct nfs4_fs_locations {
+        struct nfs_fattr fattr;
+        const struct nfs_server *server;
+        struct nfs4_pathname fs_path;
+        int nlocations;
+        struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
+};
+
+struct nfs4_fs_locations_arg {
+        const struct nfs_fh *dir_fh;
+        const struct qstr *name;
+        struct page *page;
+        const u32 *bitmask;
+};
+
 #endif /* CONFIG_NFS_V4 */
 
 struct nfs_page;
@@ -695,7 +734,7 @@ struct nfs_read_data {
 #ifdef CONFIG_NFS_V4
         unsigned long           timestamp;      /* For lease renewal */
 #endif
-        struct page             *page_array[NFS_PAGEVEC_SIZE + 1];
+        struct page             *page_array[NFS_PAGEVEC_SIZE];
 };
 
 struct nfs_write_data {
@@ -713,7 +752,7 @@ struct nfs_write_data {
 #ifdef CONFIG_NFS_V4
         unsigned long           timestamp;      /* For lease renewal */
 #endif
-        struct page             *page_array[NFS_PAGEVEC_SIZE + 1];
+        struct page             *page_array[NFS_PAGEVEC_SIZE];
 };
 
 struct nfs_access_entry;
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 84c35d42d250..e6d3d349506c 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -194,6 +194,7 @@ extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages,
 extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, uint32_t *p);
 extern uint32_t *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes);
 extern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
+extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
 
 #endif /* __KERNEL__ */