fs_parse: fold fs_parameter_desc/fs_parameter_spec

The former contains nothing but a pointer to an array of the latter...

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

arch/powerpc/platforms/cell/spufs/inode.c

@@ -583,7 +583,7 @@ enum {
 	Opt_uid, Opt_gid, Opt_mode, Opt_debug,
 };
 
-static const struct fs_parameter_spec spufs_param_specs[] = {
+static const struct fs_parameter_spec spufs_fs_parameters[] = {
 	fsparam_u32	("gid",				Opt_gid),
 	fsparam_u32oct	("mode",			Opt_mode),
 	fsparam_u32	("uid",				Opt_uid),
@@ -591,10 +591,6 @@ static const struct fs_parameter_spec spufs_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description spufs_fs_parameters = {
-	.specs		= spufs_param_specs,
-};
-
 static int spufs_show_options(struct seq_file *m, struct dentry *root)
 {
 	struct spufs_sb_info *sbi = spufs_get_sb_info(root->d_sb);
@@ -622,7 +618,7 @@ static int spufs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	kgid_t gid;
 	int opt;
 
-	opt = fs_parse(fc, &spufs_fs_parameters, param, &result);
+	opt = fs_parse(fc, spufs_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -773,7 +769,7 @@ static struct file_system_type spufs_type = {
 	.owner = THIS_MODULE,
 	.name = "spufs",
 	.init_fs_context = spufs_init_fs_context,
-	.parameters	= &spufs_fs_parameters,
+	.parameters	= spufs_fs_parameters,
 	.kill_sb = kill_litter_super,
 };
 MODULE_ALIAS_FS("spufs");

arch/s390/hypfs/inode.c

@@ -209,16 +209,12 @@ static int hypfs_release(struct inode *inode, struct file *filp)
 
 enum { Opt_uid, Opt_gid, };
 
-static const struct fs_parameter_spec hypfs_param_specs[] = {
+static const struct fs_parameter_spec hypfs_fs_parameters[] = {
 	fsparam_u32("gid", Opt_gid),
 	fsparam_u32("uid", Opt_uid),
 	{}
 };
 
-static const struct fs_parameter_description hypfs_fs_parameters = {
-	.specs		= hypfs_param_specs,
-};
-
 static int hypfs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct hypfs_sb_info *hypfs_info = fc->s_fs_info;
@@ -227,7 +223,7 @@ static int hypfs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	kgid_t gid;
 	int opt;
 
-	opt = fs_parse(fc, &hypfs_fs_parameters, param, &result);
+	opt = fs_parse(fc, hypfs_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -454,7 +450,7 @@ static struct file_system_type hypfs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "s390_hypfs",
 	.init_fs_context = hypfs_init_fs_context,
-	.parameters	= &hypfs_fs_parameters,
+	.parameters	= hypfs_fs_parameters,
 	.kill_sb	= hypfs_kill_super
 };
 

arch/x86/kernel/cpu/resctrl/rdtgroup.c

@@ -2037,24 +2037,20 @@ enum rdt_param {
 	nr__rdt_params
 };
 
-static const struct fs_parameter_spec rdt_param_specs[] = {
+static const struct fs_parameter_spec rdt_fs_parameters[] = {
 	fsparam_flag("cdp",		Opt_cdp),
 	fsparam_flag("cdpl2",		Opt_cdpl2),
 	fsparam_flag("mba_MBps",	Opt_mba_mbps),
 	{}
 };
 
-static const struct fs_parameter_description rdt_fs_parameters = {
-	.specs		= rdt_param_specs,
-};
-
 static int rdt_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct rdt_fs_context *ctx = rdt_fc2context(fc);
 	struct fs_parse_result result;
 	int opt;
 
-	opt = fs_parse(fc, &rdt_fs_parameters, param, &result);
+	opt = fs_parse(fc, rdt_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -2279,7 +2275,7 @@ static void rdt_kill_sb(struct super_block *sb)
 static struct file_system_type rdt_fs_type = {
 	.name			= "resctrl",
 	.init_fs_context	= rdt_init_fs_context,
-	.parameters		= &rdt_fs_parameters,
+	.parameters		= rdt_fs_parameters,
 	.kill_sb		= rdt_kill_sb,
 };
 

drivers/base/devtmpfs.c

@@ -71,10 +71,10 @@ static struct file_system_type internal_fs_type = {
 	.name = "devtmpfs",
 #ifdef CONFIG_TMPFS
 	.init_fs_context = shmem_init_fs_context,
-	.parameters	= &shmem_fs_parameters,
+	.parameters	= shmem_fs_parameters,
 #else
 	.init_fs_context = ramfs_init_fs_context,
-	.parameters	= &ramfs_fs_parameters,
+	.parameters	= ramfs_fs_parameters,
 #endif
 	.kill_sb = kill_litter_super,
 };

drivers/block/rbd.c

@@ -848,7 +848,7 @@ enum {
 	Opt_notrim,
 };
 
-static const struct fs_parameter_spec rbd_param_specs[] = {
+static const struct fs_parameter_spec rbd_parameters[] = {
 	fsparam_u32	("alloc_size",			Opt_alloc_size),
 	fsparam_flag	("exclusive",			Opt_exclusive),
 	fsparam_flag	("lock_on_read",		Opt_lock_on_read),
@@ -863,10 +863,6 @@ static const struct fs_parameter_spec rbd_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description rbd_parameters = {
-	.specs		= rbd_param_specs,
-};
-
 struct rbd_options {
 	int	queue_depth;
 	int	alloc_size;
@@ -6359,7 +6355,7 @@ static int rbd_parse_param(struct fs_parameter *param,
 	if (ret != -ENOPARAM)
 		return ret;
 
-	token = __fs_parse(&log, &rbd_parameters, param, &result);
+	token = __fs_parse(&log, rbd_parameters, param, &result);
 	dout("%s fs_parse '%s' token %d\n", __func__, param->key, token);
 	if (token < 0) {
 		if (token == -ENOPARAM)

drivers/usb/gadget/function/f_fs.c

@@ -1486,7 +1486,7 @@ enum {
 	Opt_gid,
 };
 
-static const struct fs_parameter_spec ffs_fs_param_specs[] = {
+static const struct fs_parameter_spec ffs_fs_fs_parameters[] = {
 	fsparam_bool	("no_disconnect",	Opt_no_disconnect),
 	fsparam_u32	("rmode",		Opt_rmode),
 	fsparam_u32	("fmode",		Opt_fmode),
@@ -1496,10 +1496,6 @@ static const struct fs_parameter_spec ffs_fs_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description ffs_fs_fs_parameters = {
-	.specs		= ffs_fs_param_specs,
-};
-
 static int ffs_fs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct ffs_sb_fill_data *data = fc->fs_private;
@@ -1508,7 +1504,7 @@ static int ffs_fs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 
 	ENTER();
 
-	opt = fs_parse(fc, &ffs_fs_fs_parameters, param, &result);
+	opt = fs_parse(fc, ffs_fs_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -1640,7 +1636,7 @@ static struct file_system_type ffs_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "functionfs",
 	.init_fs_context = ffs_fs_init_fs_context,
-	.parameters	= &ffs_fs_fs_parameters,
+	.parameters	= ffs_fs_fs_parameters,
 	.kill_sb	= ffs_fs_kill_sb,
 };
 MODULE_ALIAS_FS("functionfs");

fs/afs/super.c

@@ -38,13 +38,13 @@ static int afs_statfs(struct dentry *dentry, struct kstatfs *buf);
 static int afs_show_devname(struct seq_file *m, struct dentry *root);
 static int afs_show_options(struct seq_file *m, struct dentry *root);
 static int afs_init_fs_context(struct fs_context *fc);
-static const struct fs_parameter_description afs_fs_parameters;
+static const struct fs_parameter_spec afs_fs_parameters[];
 
 struct file_system_type afs_fs_type = {
 	.owner			= THIS_MODULE,
 	.name			= "afs",
 	.init_fs_context	= afs_init_fs_context,
-	.parameters		= &afs_fs_parameters,
+	.parameters		= afs_fs_parameters,
 	.kill_sb		= afs_kill_super,
 	.fs_flags		= FS_RENAME_DOES_D_MOVE,
 };
@@ -81,7 +81,7 @@ static const struct constant_table afs_param_flock[] = {
 	{}
 };
 
-static const struct fs_parameter_spec afs_param_specs[] = {
+static const struct fs_parameter_spec afs_fs_parameters[] = {
 	fsparam_flag  ("autocell",	Opt_autocell),
 	fsparam_flag  ("dyn",		Opt_dyn),
 	fsparam_enum  ("flock",		Opt_flock, afs_param_flock),
@@ -89,10 +89,6 @@ static const struct fs_parameter_spec afs_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description afs_fs_parameters = {
-	.specs		= afs_param_specs,
-};
-
 /*
  * initialise the filesystem
  */
@@ -321,7 +317,7 @@ static int afs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	struct afs_fs_context *ctx = fc->fs_private;
 	int opt;
 
-	opt = fs_parse(fc, &afs_fs_parameters, param, &result);
+	opt = fs_parse(fc, afs_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 

fs/ceph/super.c

@@ -169,7 +169,7 @@ static const struct constant_table ceph_param_recover[] = {
 	{}
 };
 
-static const struct fs_parameter_spec ceph_mount_param_specs[] = {
+static const struct fs_parameter_spec ceph_mount_parameters[] = {
 	fsparam_flag_no ("acl",				Opt_acl),
 	fsparam_flag_no ("asyncreaddir",		Opt_asyncreaddir),
 	fsparam_s32	("caps_max",			Opt_caps_max),
@@ -198,10 +198,6 @@ static const struct fs_parameter_spec ceph_mount_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description ceph_mount_parameters = {
-	.specs          = ceph_mount_param_specs,
-};
-
 struct ceph_parse_opts_ctx {
 	struct ceph_options		*copts;
 	struct ceph_mount_options	*opts;
@@ -271,7 +267,7 @@ static int ceph_parse_mount_param(struct fs_context *fc,
 	if (ret != -ENOPARAM)
 		return ret;
 
-	token = fs_parse(fc, &ceph_mount_parameters, param, &result);
+	token = fs_parse(fc, ceph_mount_parameters, param, &result);
 	dout("%s fs_parse '%s' token %d\n", __func__, param->key, token);
 	if (token < 0)
 		return token;

fs/fs_parser.c

@@ -47,15 +47,14 @@ int lookup_constant(const struct constant_table *tbl, const char *name, int not_
 EXPORT_SYMBOL(lookup_constant);
 
 static const struct fs_parameter_spec *fs_lookup_key(
-	const struct fs_parameter_description *desc,
+	const struct fs_parameter_spec *desc,
 	const char *name)
 {
 	const struct fs_parameter_spec *p;
-
-	if (!desc->specs)
+	if (!desc)
 		return NULL;
 
-	for (p = desc->specs; p->name; p++)
+	for (p = desc; p->name; p++)
 		if (strcmp(p->name, name) == 0)
 			return p;
 
@@ -81,7 +80,7 @@ static const struct fs_parameter_spec *fs_lookup_key(
  * the parameter wasn't recognised and unknowns aren't okay.
  */
 int __fs_parse(struct p_log *log,
-	     const struct fs_parameter_description *desc,
+	     const struct fs_parameter_spec *desc,
 	     struct fs_parameter *param,
 	     struct fs_parse_result *result)
 {
@@ -355,39 +354,37 @@ bool validate_constant_table(const struct constant_table *tbl, size_t tbl_size,
  * @desc: The parameter description to validate.
  */
 bool fs_validate_description(const char *name,
-	const struct fs_parameter_description *desc)
+	const struct fs_parameter_spec *desc)
 {
 	const struct fs_parameter_spec *param, *p2;
 	bool good = true;
 
 	pr_notice("*** VALIDATE %s ***\n", name);
 
-	if (desc->specs) {
-		for (param = desc->specs; param->name; param++) {
-			enum fs_parameter_type t = param->type;
+	for (param = desc; param->name; param++) {
+		enum fs_parameter_type t = param->type;
 
-			/* Check that the type is in range */
-			if (t == __fs_param_wasnt_defined ||
-			    t >= nr__fs_parameter_type) {
-				pr_err("VALIDATE %s: PARAM[%s] Bad type %u\n",
-				       name, param->name, t);
+		/* Check that the type is in range */
+		if (t == __fs_param_wasnt_defined ||
+		    t >= nr__fs_parameter_type) {
+			pr_err("VALIDATE %s: PARAM[%s] Bad type %u\n",
+			       name, param->name, t);
+			good = false;
+		} else if (t == fs_param_is_enum) {
+			const struct constant_table *e = param->data;
+			if (!e || !e->name) {
+				pr_err("VALIDATE %s: PARAM[%s] enum with no values\n",
+				       name, param->name);
 				good = false;
-			} else if (t == fs_param_is_enum) {
-				const struct constant_table *e = param->data;
-				if (!e || !e->name) {
-					pr_err("VALIDATE %s: PARAM[%s] enum with no values\n",
-					       name, param->name);
-					good = false;
-				}
 			}
+		}
 
-			/* Check for duplicate parameter names */
-			for (p2 = desc->specs; p2 < param; p2++) {
-				if (strcmp(param->name, p2->name) == 0) {
-					pr_err("VALIDATE %s: PARAM[%s]: Duplicate\n",
-					       name, param->name);
-					good = false;
-				}
+		/* Check for duplicate parameter names */
+		for (p2 = desc; p2 < param; p2++) {
+			if (strcmp(param->name, p2->name) == 0) {
+				pr_err("VALIDATE %s: PARAM[%s]: Duplicate\n",
+				       name, param->name);
+				good = false;
 			}
 		}
 	}

fs/fuse/inode.c

@@ -448,7 +448,7 @@ enum {
 	OPT_ERR
 };
 
-static const struct fs_parameter_spec fuse_param_specs[] = {
+static const struct fs_parameter_spec fuse_fs_parameters[] = {
 	fsparam_string	("source",		OPT_SOURCE),
 	fsparam_u32	("fd",			OPT_FD),
 	fsparam_u32oct	("rootmode",		OPT_ROOTMODE),
@@ -462,17 +462,13 @@ static const struct fs_parameter_spec fuse_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description fuse_fs_parameters = {
-	.specs		= fuse_param_specs,
-};
-
 static int fuse_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct fs_parse_result result;
 	struct fuse_fs_context *ctx = fc->fs_private;
 	int opt;
 
-	opt = fs_parse(fc, &fuse_fs_parameters, param, &result);
+	opt = fs_parse(fc, fuse_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -1346,7 +1342,7 @@ static struct file_system_type fuse_fs_type = {
 	.name		= "fuse",
 	.fs_flags	= FS_HAS_SUBTYPE | FS_USERNS_MOUNT,
 	.init_fs_context = fuse_init_fs_context,
-	.parameters	= &fuse_fs_parameters,
+	.parameters	= fuse_fs_parameters,
 	.kill_sb	= fuse_kill_sb_anon,
 };
 MODULE_ALIAS_FS("fuse");
@@ -1362,7 +1358,7 @@ static struct file_system_type fuseblk_fs_type = {
 	.owner		= THIS_MODULE,
 	.name		= "fuseblk",
 	.init_fs_context = fuse_init_fs_context,
-	.parameters	= &fuse_fs_parameters,
+	.parameters	= fuse_fs_parameters,
 	.kill_sb	= fuse_kill_sb_blk,
 	.fs_flags	= FS_REQUIRES_DEV | FS_HAS_SUBTYPE,
 };

fs/gfs2/ops_fstype.c

@@ -1306,7 +1306,7 @@ static const struct constant_table gfs2_param_errors[] = {
 	{}
 };
 
-static const struct fs_parameter_spec gfs2_param_specs[] = {
+static const struct fs_parameter_spec gfs2_fs_parameters[] = {
 	fsparam_string ("lockproto",          Opt_lockproto),
 	fsparam_string ("locktable",          Opt_locktable),
 	fsparam_string ("hostdata",           Opt_hostdata),
@@ -1336,10 +1336,6 @@ static const struct fs_parameter_spec gfs2_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description gfs2_fs_parameters = {
-	.specs = gfs2_param_specs,
-};
-
 /* Parse a single mount parameter */
 static int gfs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
@@ -1347,7 +1343,7 @@ static int gfs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
 	struct fs_parse_result result;
 	int o;
 
-	o = fs_parse(fc, &gfs2_fs_parameters, param, &result);
+	o = fs_parse(fc, gfs2_fs_parameters, param, &result);
 	if (o < 0)
 		return o;
 
@@ -1649,7 +1645,7 @@ struct file_system_type gfs2_fs_type = {
 	.name = "gfs2",
 	.fs_flags = FS_REQUIRES_DEV,
 	.init_fs_context = gfs2_init_fs_context,
-	.parameters = &gfs2_fs_parameters,
+	.parameters = gfs2_fs_parameters,
 	.kill_sb = gfs2_kill_sb,
 	.owner = THIS_MODULE,
 };

fs/hugetlbfs/inode.c

@@ -73,7 +73,7 @@ enum hugetlb_param {
 	Opt_uid,
 };
 
-static const struct fs_parameter_spec hugetlb_param_specs[] = {
+static const struct fs_parameter_spec hugetlb_fs_parameters[] = {
 	fsparam_u32   ("gid",		Opt_gid),
 	fsparam_string("min_size",	Opt_min_size),
 	fsparam_u32   ("mode",		Opt_mode),
@@ -84,10 +84,6 @@ static const struct fs_parameter_spec hugetlb_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description hugetlb_fs_parameters = {
-	.specs		= hugetlb_param_specs,
-};
-
 #ifdef CONFIG_NUMA
 static inline void hugetlb_set_vma_policy(struct vm_area_struct *vma,
 					struct inode *inode, pgoff_t index)
@@ -1170,7 +1166,7 @@ static int hugetlbfs_parse_param(struct fs_context *fc, struct fs_parameter *par
 	unsigned long ps;
 	int opt;
 
-	opt = fs_parse(fc, &hugetlb_fs_parameters, param, &result);
+	opt = fs_parse(fc, hugetlb_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -1357,7 +1353,7 @@ static int hugetlbfs_init_fs_context(struct fs_context *fc)
 static struct file_system_type hugetlbfs_fs_type = {
 	.name			= "hugetlbfs",
 	.init_fs_context	= hugetlbfs_init_fs_context,
-	.parameters		= &hugetlb_fs_parameters,
+	.parameters		= hugetlb_fs_parameters,
 	.kill_sb		= kill_litter_super,
 };
 

fs/jffs2/super.c

@@ -178,23 +178,19 @@ static const struct constant_table jffs2_param_compr[] = {
 	{}
 };
 
-static const struct fs_parameter_spec jffs2_param_specs[] = {
+static const struct fs_parameter_spec jffs2_fs_parameters[] = {
 	fsparam_enum	("compr",	Opt_override_compr, jffs2_param_compr),
 	fsparam_u32	("rp_size",	Opt_rp_size),
 	{}
 };
 
-const struct fs_parameter_description jffs2_fs_parameters = {
-	.specs		= jffs2_param_specs,
-};
-
 static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct fs_parse_result result;
 	struct jffs2_sb_info *c = fc->s_fs_info;
 	int opt;
 
-	opt = fs_parse(fc, &jffs2_fs_parameters, param, &result);
+	opt = fs_parse(fc, jffs2_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -337,7 +333,7 @@ static struct file_system_type jffs2_fs_type = {
 	.owner =	THIS_MODULE,
 	.name =		"jffs2",
 	.init_fs_context = jffs2_init_fs_context,
-	.parameters =	&jffs2_fs_parameters,
+	.parameters =	jffs2_fs_parameters,
 	.kill_sb =	jffs2_kill_sb,
 };
 MODULE_ALIAS_FS("jffs2");

fs/nfs/fs_context.c

@@ -111,7 +111,7 @@ static const struct constant_table nfs_param_enums_lookupcache[] = {
 	{}
 };
 
-static const struct fs_parameter_spec nfs_param_specs[] = {
+static const struct fs_parameter_spec nfs_fs_parameters[] = {
 	fsparam_flag_no("ac",		Opt_ac),
 	fsparam_u32   ("acdirmax",	Opt_acdirmax),
 	fsparam_u32   ("acdirmin",	Opt_acdirmin),
@@ -173,10 +173,6 @@ static const struct fs_parameter_spec nfs_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description nfs_fs_parameters = {
-	.specs		= nfs_param_specs,
-};
-
 enum {
 	Opt_vers_2,
 	Opt_vers_3,
@@ -443,7 +439,7 @@ static int nfs_fs_context_parse_param(struct fs_context *fc,
 
 	dfprintk(MOUNT, "NFS:   parsing nfs mount option '%s'\n", param->key);
 
-	opt = fs_parse(fc, &nfs_fs_parameters, param, &result);
+	opt = fs_parse(fc, nfs_fs_parameters, param, &result);
 	if (opt < 0)
 		return ctx->sloppy ? 1 : opt;
 
@@ -1416,7 +1412,7 @@ struct file_system_type nfs_fs_type = {
 	.owner			= THIS_MODULE,
 	.name			= "nfs",
 	.init_fs_context	= nfs_init_fs_context,
-	.parameters		= &nfs_fs_parameters,
+	.parameters		= nfs_fs_parameters,
 	.kill_sb		= nfs_kill_super,
 	.fs_flags		= FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
 };
@@ -1428,7 +1424,7 @@ struct file_system_type nfs4_fs_type = {
 	.owner			= THIS_MODULE,
 	.name			= "nfs4",
 	.init_fs_context	= nfs_init_fs_context,
-	.parameters		= &nfs_fs_parameters,
+	.parameters		= nfs_fs_parameters,
 	.kill_sb		= nfs_kill_super,
 	.fs_flags		= FS_RENAME_DOES_D_MOVE|FS_BINARY_MOUNTDATA,
 };

fs/proc/root.c

@@ -41,23 +41,19 @@ enum proc_param {
 	Opt_hidepid,
 };
 
-static const struct fs_parameter_spec proc_param_specs[] = {
+static const struct fs_parameter_spec proc_fs_parameters[] = {
 	fsparam_u32("gid",	Opt_gid),
 	fsparam_u32("hidepid",	Opt_hidepid),
 	{}
 };
 
-static const struct fs_parameter_description proc_fs_parameters = {
-	.specs		= proc_param_specs,
-};
-
 static int proc_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct proc_fs_context *ctx = fc->fs_private;
 	struct fs_parse_result result;
 	int opt;
 
-	opt = fs_parse(fc, &proc_fs_parameters, param, &result);
+	opt = fs_parse(fc, proc_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -206,7 +202,7 @@ static void proc_kill_sb(struct super_block *sb)
 static struct file_system_type proc_fs_type = {
 	.name			= "proc",
 	.init_fs_context	= proc_init_fs_context,
-	.parameters		= &proc_fs_parameters,
+	.parameters		= proc_fs_parameters,
 	.kill_sb		= proc_kill_sb,
 	.fs_flags		= FS_USERNS_MOUNT | FS_DISALLOW_NOTIFY_PERM,
 };

fs/ramfs/inode.c

@@ -181,22 +181,18 @@ enum ramfs_param {
 	Opt_mode,
 };
 
-static const struct fs_parameter_spec ramfs_param_specs[] = {
+const struct fs_parameter_spec ramfs_fs_parameters[] = {
 	fsparam_u32oct("mode",	Opt_mode),
 	{}
 };
 
-const struct fs_parameter_description ramfs_fs_parameters = {
-	.specs		= ramfs_param_specs,
-};
-
 static int ramfs_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct fs_parse_result result;
 	struct ramfs_fs_info *fsi = fc->s_fs_info;
 	int opt;
 
-	opt = fs_parse(fc, &ramfs_fs_parameters, param, &result);
+	opt = fs_parse(fc, ramfs_fs_parameters, param, &result);
 	if (opt < 0) {
 		/*
 		 * We might like to report bad mount options here;
@@ -277,7 +273,7 @@ static void ramfs_kill_sb(struct super_block *sb)
 static struct file_system_type ramfs_fs_type = {
 	.name		= "ramfs",
 	.init_fs_context = ramfs_init_fs_context,
-	.parameters	= &ramfs_fs_parameters,
+	.parameters	= ramfs_fs_parameters,
 	.kill_sb	= ramfs_kill_sb,
 	.fs_flags	= FS_USERNS_MOUNT,
 };

fs/xfs/xfs_super.c

@@ -62,7 +62,7 @@ enum {
 	Opt_discard, Opt_nodiscard, Opt_dax,
 };
 
-static const struct fs_parameter_spec xfs_param_specs[] = {
+static const struct fs_parameter_spec xfs_fs_parameters[] = {
 	fsparam_u32("logbufs",		Opt_logbufs),
 	fsparam_string("logbsize",	Opt_logbsize),
 	fsparam_string("logdev",	Opt_logdev),
@@ -106,10 +106,6 @@ static const struct fs_parameter_spec xfs_param_specs[] = {
 	{}
 };
 
-static const struct fs_parameter_description xfs_fs_parameters = {
-	.specs		= xfs_param_specs,
-};
-
 struct proc_xfs_info {
 	uint64_t	flag;
 	char		*str;
@@ -1145,7 +1141,7 @@ xfs_fc_parse_param(
 	int			size = 0;
 	int			opt;
 
-	opt = fs_parse(fc, &xfs_fs_parameters, param, &result);
+	opt = fs_parse(fc, xfs_fs_parameters, param, &result);
 	if (opt < 0)
 		return opt;
 
@@ -1787,7 +1783,7 @@ static struct file_system_type xfs_fs_type = {
 	.owner			= THIS_MODULE,
 	.name			= "xfs",
 	.init_fs_context	= xfs_init_fs_context,
-	.parameters		= &xfs_fs_parameters,
+	.parameters		= xfs_fs_parameters,
 	.kill_sb		= kill_block_super,
 	.fs_flags		= FS_REQUIRES_DEV,
 };

include/linux/fs.h

@@ -67,7 +67,7 @@ struct fscrypt_operations;
 struct fsverity_info;
 struct fsverity_operations;
 struct fs_context;
-struct fs_parameter_description;
+struct fs_parameter_spec;
 
 extern void __init inode_init(void);
 extern void __init inode_init_early(void);
@@ -2224,7 +2224,7 @@ struct file_system_type {
 #define FS_DISALLOW_NOTIFY_PERM	16	/* Disable fanotify permission events */
 #define FS_RENAME_DOES_D_MOVE	32768	/* FS will handle d_move() during rename() internally. */
 	int (*init_fs_context)(struct fs_context *);
-	const struct fs_parameter_description *parameters;
+	const struct fs_parameter_spec *parameters;
 	struct dentry *(*mount) (struct file_system_type *, int,
 		       const char *, void *);
 	void (*kill_sb) (struct super_block *);

include/linux/fs_parser.h

@@ -56,10 +56,6 @@ struct fs_parameter_spec {
 	const void		*data;
 };
 
-struct fs_parameter_description {
-	const struct fs_parameter_spec *specs;	/* List of param specifications */
-};
-
 /*
  * Result of parse.
  */
@@ -74,12 +70,12 @@ struct fs_parse_result {
 };
 
 extern int __fs_parse(struct p_log *log,
-		    const struct fs_parameter_description *desc,
+		    const struct fs_parameter_spec *desc,
 		    struct fs_parameter *value,
 		    struct fs_parse_result *result);
 
 static inline int fs_parse(struct fs_context *fc,
-	     const struct fs_parameter_description *desc,
+	     const struct fs_parameter_spec *desc,
 	     struct fs_parameter *param,
 	     struct fs_parse_result *result)
 {
@@ -97,13 +93,13 @@ extern int lookup_constant(const struct constant_table tbl[], const char *name,
 extern bool validate_constant_table(const struct constant_table *tbl, size_t tbl_size,
 				    int low, int high, int special);
 extern bool fs_validate_description(const char *name,
-				    const struct fs_parameter_description *desc);
+				    const struct fs_parameter_spec *desc);
 #else
 static inline bool validate_constant_table(const struct constant_table *tbl, size_t tbl_size,
 					   int low, int high, int special)
 { return true; }
 static inline bool fs_validate_description(const char *name,
-					   const struct fs_parameter_description *desc)
+					   const struct fs_parameter_spec *desc)
 { return true; }
 #endif
 

include/linux/ramfs.h

@@ -2,6 +2,8 @@
 #ifndef _LINUX_RAMFS_H
 #define _LINUX_RAMFS_H
 
+#include <linux/fs_parser.h> // bleh...
+
 struct inode *ramfs_get_inode(struct super_block *sb, const struct inode *dir,
 	 umode_t mode, dev_t dev);
 extern int ramfs_init_fs_context(struct fs_context *fc);
@@ -16,7 +18,7 @@ ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize)
 extern int ramfs_nommu_expand_for_mapping(struct inode *inode, size_t newsize);
 #endif
 
-extern const struct fs_parameter_description ramfs_fs_parameters;
+extern const struct fs_parameter_spec ramfs_fs_parameters[];
 extern const struct file_operations ramfs_file_operations;
 extern const struct vm_operations_struct generic_file_vm_ops;