convert simple cases of nfs-related ->get_sb() to ->mount()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 3600ec7..0a42e8f 100644 (file)
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -260,8 +260,8 @@ static int  nfs_statfs(struct dentry *, struct kstatfs *);
 static int  nfs_show_options(struct seq_file *, struct vfsmount *);
 static int  nfs_show_stats(struct seq_file *, struct vfsmount *);
 static int nfs_get_sb(struct file_system_type *, int, const char *, void *, struct vfsmount *);
-static int nfs_xdev_get_sb(struct file_system_type *fs_type,
-               int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
+static struct dentry *nfs_xdev_mount(struct file_system_type *fs_type,
+               int flags, const char *dev_name, void *raw_data);
 static void nfs_put_super(struct super_block *);
 static void nfs_kill_super(struct super_block *);
 static int nfs_remount(struct super_block *sb, int *flags, char *raw_data);
@@ -277,7 +277,7 @@ static struct file_system_type nfs_fs_type = {
 struct file_system_type nfs_xdev_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "nfs",
-       .get_sb         = nfs_xdev_get_sb,
+       .mount          = nfs_xdev_mount,
        .kill_sb        = nfs_kill_super,
        .fs_flags       = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
@@ -302,14 +302,14 @@ static int nfs4_try_mount(int flags, const char *dev_name,
        struct nfs_parsed_mount_data *data, struct vfsmount *mnt);
 static int nfs4_get_sb(struct file_system_type *fs_type,
        int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
-static int nfs4_remote_get_sb(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
-static int nfs4_xdev_get_sb(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
+static struct dentry *nfs4_remote_mount(struct file_system_type *fs_type,
+       int flags, const char *dev_name, void *raw_data);
+static struct dentry *nfs4_xdev_mount(struct file_system_type *fs_type,
+       int flags, const char *dev_name, void *raw_data);
 static int nfs4_referral_get_sb(struct file_system_type *fs_type,
        int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
-static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
+static struct dentry *nfs4_remote_referral_mount(struct file_system_type *fs_type,
+       int flags, const char *dev_name, void *raw_data);
 static void nfs4_kill_super(struct super_block *sb);
 
 static struct file_system_type nfs4_fs_type = {
@@ -323,7 +323,7 @@ static struct file_system_type nfs4_fs_type = {
 static struct file_system_type nfs4_remote_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "nfs4",
-       .get_sb         = nfs4_remote_get_sb,
+       .mount          = nfs4_remote_mount,
        .kill_sb        = nfs4_kill_super,
        .fs_flags       = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
@@ -331,7 +331,7 @@ static struct file_system_type nfs4_remote_fs_type = {
 struct file_system_type nfs4_xdev_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "nfs4",
-       .get_sb         = nfs4_xdev_get_sb,
+       .mount          = nfs4_xdev_mount,
        .kill_sb        = nfs4_kill_super,
        .fs_flags       = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
@@ -339,7 +339,7 @@ struct file_system_type nfs4_xdev_fs_type = {
 static struct file_system_type nfs4_remote_referral_fs_type = {
        .owner          = THIS_MODULE,
        .name           = "nfs4",
-       .get_sb         = nfs4_remote_referral_get_sb,
+       .mount          = nfs4_remote_referral_mount,
        .kill_sb        = nfs4_kill_super,
        .fs_flags       = FS_RENAME_DOES_D_MOVE|FS_REVAL_DOT|FS_BINARY_MOUNTDATA,
 };
@@ -2397,9 +2397,9 @@ static void nfs_kill_super(struct super_block *s)
 /*
  * Clone an NFS2/3 server record on xdev traversal (FSID-change)
  */
-static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
-                          const char *dev_name, void *raw_data,
-                          struct vfsmount *mnt)
+static struct dentry *
+nfs_xdev_mount(struct file_system_type *fs_type, int flags,
+               const char *dev_name, void *raw_data)
 {
        struct nfs_clone_mount *data = raw_data;
        struct super_block *s;
@@ -2411,7 +2411,7 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
        };
        int error;
 
-       dprintk("--> nfs_xdev_get_sb()\n");
+       dprintk("--> nfs_xdev_mount()\n");
 
        /* create a new volume representation */
        server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr);
@@ -2458,28 +2458,26 @@ static int nfs_xdev_get_sb(struct file_system_type *fs_type, int flags,
        }
 
        s->s_flags |= MS_ACTIVE;
-       mnt->mnt_sb = s;
-       mnt->mnt_root = mntroot;
 
        /* clone any lsm security options from the parent to the new sb */
        security_sb_clone_mnt_opts(data->sb, s);
 
-       dprintk("<-- nfs_xdev_get_sb() = 0\n");
-       return 0;
+       dprintk("<-- nfs_xdev_mount() = 0\n");
+       return mntroot;
 
 out_err_nosb:
        nfs_free_server(server);
 out_err_noserver:
-       dprintk("<-- nfs_xdev_get_sb() = %d [error]\n", error);
-       return error;
+       dprintk("<-- nfs_xdev_mount() = %d [error]\n", error);
+       return ERR_PTR(error);
 
 error_splat_super:
        if (server && !s->s_root)
                bdi_unregister(&server->backing_dev_info);
 error_splat_bdi:
        deactivate_locked_super(s);
-       dprintk("<-- nfs_xdev_get_sb() = %d [splat]\n", error);
-       return error;
+       dprintk("<-- nfs_xdev_mount() = %d [splat]\n", error);
+       return ERR_PTR(error);
 }
 
 #ifdef CONFIG_NFS_V4
@@ -2649,8 +2647,9 @@ out_no_address:
 /*
  * Get the superblock for the NFS4 root partition
  */
-static int nfs4_remote_get_sb(struct file_system_type *fs_type,
-       int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt)
+static struct dentry *
+nfs4_remote_mount(struct file_system_type *fs_type, int flags,
+                 const char *dev_name, void *raw_data)
 {
        struct nfs_parsed_mount_data *data = raw_data;
        struct super_block *s;
@@ -2714,15 +2713,16 @@ static int nfs4_remote_get_sb(struct file_system_type *fs_type,
                goto error_splat_root;
 
        s->s_flags |= MS_ACTIVE;
-       mnt->mnt_sb = s;
-       mnt->mnt_root = mntroot;
-       error = 0;
+
+       security_free_mnt_opts(&data->lsm_opts);
+       nfs_free_fhandle(mntfh);
+       return mntroot;
 
 out:
        security_free_mnt_opts(&data->lsm_opts);
 out_free_fh:
        nfs_free_fhandle(mntfh);
-       return error;
+       return ERR_PTR(error);
 
 out_free:
        nfs_free_server(server);
@@ -2968,9 +2968,9 @@ static void nfs4_kill_super(struct super_block *sb)
 /*
  * Clone an NFS4 server record on xdev traversal (FSID-change)
  */
-static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags,
-                           const char *dev_name, void *raw_data,
-                           struct vfsmount *mnt)
+static struct dentry *
+nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
+                const char *dev_name, void *raw_data)
 {
        struct nfs_clone_mount *data = raw_data;
        struct super_block *s;
@@ -2982,7 +2982,7 @@ static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags,
        };
        int error;
 
-       dprintk("--> nfs4_xdev_get_sb()\n");
+       dprintk("--> nfs4_xdev_mount()\n");
 
        /* create a new volume representation */
        server = nfs_clone_server(NFS_SB(data->sb), data->fh, data->fattr);
@@ -3029,32 +3029,30 @@ static int nfs4_xdev_get_sb(struct file_system_type *fs_type, int flags,
        }
 
        s->s_flags |= MS_ACTIVE;
-       mnt->mnt_sb = s;
-       mnt->mnt_root = mntroot;
 
        security_sb_clone_mnt_opts(data->sb, s);
 
-       dprintk("<-- nfs4_xdev_get_sb() = 0\n");
-       return 0;
+       dprintk("<-- nfs4_xdev_mount() = 0\n");
+       return mntroot;
 
 out_err_nosb:
        nfs_free_server(server);
 out_err_noserver:
-       dprintk("<-- nfs4_xdev_get_sb() = %d [error]\n", error);
-       return error;
+       dprintk("<-- nfs4_xdev_mount() = %d [error]\n", error);
+       return ERR_PTR(error);
 
 error_splat_super:
        if (server && !s->s_root)
                bdi_unregister(&server->backing_dev_info);
 error_splat_bdi:
        deactivate_locked_super(s);
-       dprintk("<-- nfs4_xdev_get_sb() = %d [splat]\n", error);
-       return error;
+       dprintk("<-- nfs4_xdev_mount() = %d [splat]\n", error);
+       return ERR_PTR(error);
 }
 
-static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
-               int flags, const char *dev_name, void *raw_data,
-               struct vfsmount *mnt)
+static struct dentry *
+nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
+                          const char *dev_name, void *raw_data)
 {
        struct nfs_clone_mount *data = raw_data;
        struct super_block *s;
@@ -3118,14 +3116,12 @@ static int nfs4_remote_referral_get_sb(struct file_system_type *fs_type,
        }
 
        s->s_flags |= MS_ACTIVE;
-       mnt->mnt_sb = s;
-       mnt->mnt_root = mntroot;
 
        security_sb_clone_mnt_opts(data->sb, s);
 
        nfs_free_fhandle(mntfh);
        dprintk("<-- nfs4_referral_get_sb() = 0\n");
-       return 0;
+       return mntroot;
 
 out_err_nosb:
        nfs_free_server(server);
@@ -3133,7 +3129,7 @@ out_err_noserver:
        nfs_free_fhandle(mntfh);
 out_err_nofh:
        dprintk("<-- nfs4_referral_get_sb() = %d [error]\n", error);
-       return error;
+       return ERR_PTR(error);
 
 error_splat_super:
        if (server && !s->s_root)
@@ -3142,7 +3138,7 @@ error_splat_bdi:
        deactivate_locked_super(s);
        nfs_free_fhandle(mntfh);
        dprintk("<-- nfs4_referral_get_sb() = %d [splat]\n", error);
-       return error;
+       return ERR_PTR(error);
 }
 
 /*