NFS: Add nfs_alloc_parsed_mount_data

Allocating nfs_parsed_mount_data and setting up the defaults is nearly
the same for both nfs and nfs4 mounts.

Both paths seem to use nfs_validate_transport_protocol(), so setting a
default value for nfs_server.protocol ought to be unnecessary.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index ca278b3..92bbe1d 100644 (file)
--- 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.
  *
@@ -1637,20 +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;
@@ -2097,7 +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;
@@ -2365,18 +2372,7 @@ 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))
@@ -2659,7 +2655,7 @@ 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;