1 files changed, 43 insertions, 37 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 867f70504531..810770f96816 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -728,6 +728,27 @@ static void nfs_umount_begin(struct super_block *sb)
         unlock_kernel();
 }
 
+static struct nfs_parsed_mount_data *nfs_alloc_parsed_mount_data(int flags)
+{
+        struct nfs_parsed_mount_data *data;
+
+        data = kzalloc(sizeof(*data), GFP_KERNEL);
+        if (data) {
+                data->flags             = flags;
+                data->rsize             = NFS_MAX_FILE_IO_SIZE;
+                data->wsize             = NFS_MAX_FILE_IO_SIZE;
+                data->acregmin          = NFS_DEF_ACREGMIN;
+                data->acregmax          = NFS_DEF_ACREGMAX;
+                data->acdirmin          = NFS_DEF_ACDIRMIN;
+                data->acdirmax          = NFS_DEF_ACDIRMAX;
+                data->nfs_server.port   = NFS_UNSPEC_PORT;
+                data->auth_flavors[0]   = RPC_AUTH_UNIX;
+                data->auth_flavor_len   = 1;
+                data->minorversion      = 0;
+        }
+        return data;
+}
+
 /*
  * Sanity-check a server address provided by the mount command.
  *
@@ -1430,10 +1451,13 @@ static int nfs_try_mount(struct nfs_parsed_mount_data *args,
         int status;
 
         if (args->mount_server.version == 0) {
-                if (args->flags & NFS_MOUNT_VER3)
-                        args->mount_server.version = NFS_MNT3_VERSION;
-                else
-                        args->mount_server.version = NFS_MNT_VERSION;
+                switch (args->version) {
+                        default:
+                                args->mount_server.version = NFS_MNT3_VERSION;
+                                break;
+                        case 2:
+                                args->mount_server.version = NFS_MNT_VERSION;
+                }
         }
         request.version = args->mount_server.version;
 
@@ -1634,20 +1658,6 @@ static int nfs_validate_mount_data(void *options,
         if (data == NULL)
                 goto out_no_data;
 
-        args->flags             = (NFS_MOUNT_VER3 | NFS_MOUNT_TCP);
-        args->rsize             = NFS_MAX_FILE_IO_SIZE;
-        args->wsize             = NFS_MAX_FILE_IO_SIZE;
-        args->acregmin          = NFS_DEF_ACREGMIN;
-        args->acregmax          = NFS_DEF_ACREGMAX;
-        args->acdirmin          = NFS_DEF_ACDIRMIN;
-        args->acdirmax          = NFS_DEF_ACDIRMAX;
-        args->mount_server.port = NFS_UNSPEC_PORT;
-        args->nfs_server.port   = NFS_UNSPEC_PORT;
-        args->nfs_server.protocol = XPRT_TRANSPORT_TCP;
-        args->auth_flavors[0]   = RPC_AUTH_UNIX;
-        args->auth_flavor_len   = 1;
-        args->minorversion      = 0;
-
         switch (data->version) {
         case 1:
                 data->namlen = 0;
@@ -1778,7 +1788,7 @@ static int nfs_validate_mount_data(void *options,
         }
 
 #ifndef CONFIG_NFS_V3
-        if (args->flags & NFS_MOUNT_VER3)
+        if (args->version == 3)
                 goto out_v3_not_compiled;
 #endif /* !CONFIG_NFS_V3 */
 
@@ -1918,6 +1928,8 @@ static inline void nfs_initialise_sb(struct super_block *sb)
         if (server->flags & NFS_MOUNT_NOAC)
                 sb->s_flags |= MS_SYNCHRONOUS;
 
+        sb->s_bdi = &server->backing_dev_info;
+
         nfs_super_set_maxbytes(sb, server->maxfilesize);
 }
 
@@ -1934,7 +1946,7 @@ static void nfs_fill_super(struct super_block *sb,
         if (data->bsize)
                 sb->s_blocksize = nfs_block_size(data->bsize, &sb->s_blocksize_bits);
 
-        if (server->flags & NFS_MOUNT_VER3) {
+        if (server->nfs_client->rpc_ops->version == 3) {
                 /* The VFS shouldn't apply the umask to mode bits. We will do
                  * so ourselves when necessary.
                  */
@@ -1958,7 +1970,7 @@ static void nfs_clone_super(struct super_block *sb,
         sb->s_blocksize = old_sb->s_blocksize;
         sb->s_maxbytes = old_sb->s_maxbytes;
 
-        if (server->flags & NFS_MOUNT_VER3) {
+        if (server->nfs_client->rpc_ops->version == 3) {
                 /* The VFS shouldn't apply the umask to mode bits. We will do
                  * so ourselves when necessary.
                  */
@@ -2092,7 +2104,7 @@ static int nfs_get_sb(struct file_system_type *fs_type,
         };
         int error = -ENOMEM;
 
-        data = kzalloc(sizeof(*data), GFP_KERNEL);
+        data = nfs_alloc_parsed_mount_data(NFS_MOUNT_VER3 | NFS_MOUNT_TCP);
         mntfh = kzalloc(sizeof(*mntfh), GFP_KERNEL);
         if (data == NULL || mntfh == NULL)
                 goto out_free_fh;
@@ -2142,7 +2154,8 @@ static int nfs_get_sb(struct file_system_type *fs_type,
         if (!s->s_root) {
                 /* initial superblock/root creation */
                 nfs_fill_super(s, data);
-                nfs_fscache_get_super_cookie(s, data);
+                nfs_fscache_get_super_cookie(
+                        s, data ? data->fscache_uniq : NULL, NULL);
         }
 
         mntroot = nfs_get_root(s, mntfh);
@@ -2188,8 +2201,8 @@ static void nfs_kill_super(struct super_block *s)
 {
         struct nfs_server *server = NFS_SB(s);
 
-        bdi_unregister(&server->backing_dev_info);
         kill_anon_super(s);
+        bdi_unregister(&server->backing_dev_info);
         nfs_fscache_release_super_cookie(s);
         nfs_free_server(server);
 }
@@ -2243,6 +2256,7 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
         if (!s->s_root) {
                 /* initial superblock/root creation */
                 nfs_clone_super(s, data->sb);
+                nfs_fscache_get_super_cookie(s, NULL, data);
         }
 
         mntroot = nfs_get_root(s, data->fh);
@@ -2360,18 +2374,7 @@ static int nfs4_validate_mount_data(void *options,
         if (data == NULL)
                 goto out_no_data;
 
-        args->rsize             = NFS_MAX_FILE_IO_SIZE;
-        args->wsize             = NFS_MAX_FILE_IO_SIZE;
-        args->acregmin          = NFS_DEF_ACREGMIN;
-        args->acregmax          = NFS_DEF_ACREGMAX;
-        args->acdirmin          = NFS_DEF_ACDIRMIN;
-        args->acdirmax          = NFS_DEF_ACDIRMAX;
-        args->nfs_server.port   = NFS_UNSPEC_PORT;
-        args->auth_flavors[0]   = RPC_AUTH_UNIX;
-        args->auth_flavor_len   = 1;
         args->version           = 4;
-        args->minorversion      = 0;
-
         switch (data->version) {
         case 1:
                 if (data->host_addrlen > sizeof(args->nfs_server.address))
@@ -2506,7 +2509,8 @@ static int nfs4_remote_get_sb(struct file_system_type *fs_type,
         if (!s->s_root) {
                 /* initial superblock/root creation */
                 nfs4_fill_super(s);
-                nfs_fscache_get_super_cookie(s, data);
+                nfs_fscache_get_super_cookie(
+                        s, data ? data->fscache_uniq : NULL, NULL);
         }
 
         mntroot = nfs4_get_root(s, mntfh);
@@ -2654,7 +2658,7 @@ static int nfs4_get_sb(struct file_system_type *fs_type,
         struct nfs_parsed_mount_data *data;
         int error = -ENOMEM;
 
-        data = kzalloc(sizeof(*data), GFP_KERNEL);
+        data = nfs_alloc_parsed_mount_data(0);
         if (data == NULL)
                 goto out_free_data;
 
@@ -2739,6 +2743,7 @@ static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags,
         if (!s->s_root) {
                 /* initial superblock/root creation */
                 nfs4_clone_super(s, data->sb);
+                nfs_fscache_get_super_cookie(s, NULL, data);
         }
 
         mntroot = nfs4_get_root(s, data->fh);
@@ -2820,6 +2825,7 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
         if (!s->s_root) {
                 /* initial superblock/root creation */
                 nfs4_fill_super(s);
+                nfs_fscache_get_super_cookie(s, NULL, data);
         }
 
         mntroot = nfs4_get_root(s, &mntfh);