diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 7a603398b69e..2ecfa32f26ac 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -196,6 +196,7 @@ struct afs_super_info {
 	struct afs_cell		*cell;		/* The cell in which the volume resides */
 	struct afs_volume	*volume;	/* volume record */
 	bool			dyn_root;	/* True if dynamic root */
+	bool			autocell;	/* True if autocell */
 };
 
 static inline struct afs_super_info *AFS_FS_S(struct super_block *sb)
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 1fe5026b1104..14abf604e8d3 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -197,7 +197,7 @@ static int afs_show_options(struct seq_file *m, struct dentry *root)
 
 	if (as->dyn_root)
 		seq_puts(m, ",dyn");
-	if (test_bit(AFS_VNODE_AUTOCELL, &AFS_FS_I(d_inode(root))->flags))
+	if (as->autocell)
 		seq_puts(m, ",autocell");
 	return 0;
 }
@@ -444,7 +444,7 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
 	if (IS_ERR(inode))
 		return PTR_ERR(inode);
 
-	if (ctx->autocell || as->dyn_root)
+	if (as->autocell || as->dyn_root)
 		set_bit(AFS_VNODE_AUTOCELL, &AFS_FS_I(inode)->flags);
 
 	ret = -ENOMEM;
@@ -483,6 +483,8 @@ static struct afs_super_info *afs_alloc_sbi(struct fs_context *fc)
 			as->cell = afs_get_cell(ctx->cell);
 			as->volume = __afs_get_volume(ctx->volume);
 		}
+		if (ctx->autocell)
+			as->autocell = true;
 	}
 	return as;
 }
@@ -790,6 +792,7 @@ static int afs_fsinfo(struct path *path, struct fsinfo_kparams *params)
 	struct afs_volume *volume = as->volume;
 	struct afs_cell *cell = as->cell;
 	struct afs_net *net = afs_d2net(dentry);
+	const char *str = NULL;
 	bool dyn_root = as->dyn_root;
 	int ret;
 
@@ -894,7 +897,39 @@ static int afs_fsinfo(struct path *path, struct fsinfo_kparams *params)
 		afs_put_serverlist(net, slist);
 		return ret;
 
+	case FSINFO_ATTR_PARAMETER:
+		if (params->Mth)
+			return -ENODATA;
+		switch (params->Nth) {
+		case Opt_source:
+			if (dyn_root)
+				return 0;
+			return sprintf(params->buffer, "source=%c%s:%s%s",
+				       volume->type == AFSVL_RWVOL ? '%' : '#',
+				       cell->name,
+				       volume->name,
+				       volume->type == AFSVL_RWVOL ? "" :
+				       volume->type == AFSVL_ROVOL ? ".readonly" :
+				       ".backup");
+		case Opt_autocell:
+			if (as->autocell)
+				str = "autocell";
+			goto string;
+		case Opt_dyn:
+			if (dyn_root)
+				str = "dyn";
+			goto string;
+		default:
+			return -ENODATA;
+		}
+
 	default:
 		return generic_fsinfo(path, params);
 	}
+
+string:
+	if (!str)
+		return 0;
+	strcpy(params->buffer, str);
+	return strlen(params->buffer);
 }
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 700b009af8e4..762028994f47 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -28,6 +28,7 @@
 #include <linux/hugetlb.h>
 #include <linux/pagevec.h>
 #include <linux/fs_parser.h>
+#include <linux/fsinfo.h>
 #include <linux/mman.h>
 #include <linux/slab.h>
 #include <linux/dnotify.h>
@@ -947,6 +948,70 @@ static int hugetlbfs_show_options(struct seq_file *m, struct dentry *root)
 	return 0;
 }
 
+static int hugetlbfs_fsinfo(struct path *path, struct fsinfo_kparams *params)
+{
+	struct dentry *dentry = path->dentry;
+	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
+	struct hugepage_subpool *spool = sbinfo->spool;
+	unsigned long hpage_size = huge_page_size(sbinfo->hstate);
+	unsigned hpage_shift = huge_page_shift(sbinfo->hstate);
+	char mod;
+
+	switch (params->request) {
+	case FSINFO_ATTR_PARAMETER:
+		if (params->Mth)
+			return -ENODATA;
+		switch (params->Nth) {
+		case Opt_uid:
+			if (!uid_eq(sbinfo->uid, GLOBAL_ROOT_UID))
+				return sprintf(params->buffer, "uid=%u",
+					       from_kuid_munged(&init_user_ns,
+								sbinfo->uid));
+			return 0;
+		case Opt_gid:
+			if (!gid_eq(sbinfo->gid, GLOBAL_ROOT_GID))
+				return sprintf(params->buffer, "gid=%u",
+					       from_kgid_munged(&init_user_ns,
+								sbinfo->gid));
+			return 0;
+
+		case Opt_size:
+			if (!spool || spool->max_hpages == -1)
+				return 0;
+			return sprintf(params->buffer, "size=%llu",
+				       (unsigned long long)spool->max_hpages << hpage_shift);
+		case Opt_min_size:
+			if (!spool || spool->min_hpages == -1)
+				return 0;
+			return sprintf(params->buffer, "min_size=%llu",
+				       (unsigned long long)spool->min_hpages << hpage_shift);
+		case Opt_pagesize:
+			hpage_size /= 1024;
+			mod = 'K';
+			if (hpage_size >= 1024) {
+				hpage_size /= 1024;
+				mod = 'M';
+			}
+			return sprintf(params->buffer, "pagesize=%lu%c",
+				       hpage_size, mod);
+
+		case Opt_mode:
+			if (sbinfo->mode == 0755)
+				return 0;
+			return sprintf(params->buffer, "mode=%o", sbinfo->mode);
+		case Opt_nr_inodes:
+			if (sbinfo->max_inodes == -1)
+				return 0;
+			return sprintf(params->buffer, "nr_inodes=%lu",
+				       sbinfo->max_inodes);
+		default:
+			return -ENODATA;
+		}
+	default:
+		return generic_fsinfo(path, params);
+	}
+}
+
 static int hugetlbfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 {
 	struct hugetlbfs_sb_info *sbinfo = HUGETLBFS_SB(dentry->d_sb);
@@ -1106,6 +1171,7 @@ static const struct super_operations hugetlbfs_ops = {
 	.statfs		= hugetlbfs_statfs,
 	.put_super	= hugetlbfs_put_super,
 	.show_options	= hugetlbfs_show_options,
+	.fsinfo		= hugetlbfs_fsinfo,
 };
 
 /*
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index 56742632956c..1bd43f6947f3 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -17,6 +17,7 @@
 #include <linux/namei.h>
 #include <linux/seq_file.h>
 #include <linux/exportfs.h>
+#include <linux/fsinfo.h>
 
 #include "kernfs-internal.h"
 
@@ -55,6 +56,20 @@ static int kernfs_sop_show_path(struct seq_file *sf, struct dentry *dentry)
 	return 0;
 }
 
+static int kernfs_sop_fsinfo(struct path *path, struct fsinfo_kparams *params)
+{
+	struct kernfs_root *root = kernfs_root(kernfs_dentry_node(path->dentry));
+	struct kernfs_syscall_ops *scops = root->syscall_ops;
+	int ret;
+
+	if (scops && scops->fsinfo) {
+		ret = scops->fsinfo(root, params);
+		if (ret != -EAGAIN)
+			return ret;
+	}
+	return generic_fsinfo(path, params);
+}
+
 const struct super_operations kernfs_sops = {
 	.statfs		= simple_statfs,
 	.drop_inode	= generic_delete_inode,
@@ -62,6 +77,7 @@ const struct super_operations kernfs_sops = {
 
 	.show_options	= kernfs_sop_show_options,
 	.show_path	= kernfs_sop_show_path,
+	.fsinfo		= kernfs_sop_fsinfo,
 };
 
 /*
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index 051709212f55..631b52861763 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -27,6 +27,7 @@ struct vm_area_struct;
 struct super_block;
 struct file_system_type;
 struct fs_context;
+struct fsinfo_kparams;
 
 struct kernfs_fs_context;
 struct kernfs_open_node;
@@ -172,6 +173,7 @@ struct kernfs_node {
 struct kernfs_syscall_ops {
 	int (*reconfigure)(struct kernfs_root *root, struct fs_context *fc);
 	int (*show_options)(struct seq_file *sf, struct kernfs_root *root);
+	int (*fsinfo)(struct kernfs_root *root, struct fsinfo_kparams *params);
 
 	int (*mkdir)(struct kernfs_node *parent, const char *name,
 		     umode_t mode);
diff --git a/include/uapi/linux/fsinfo.h b/include/uapi/linux/fsinfo.h
index ec2ff86f49ce..50e6cd50fe63 100644
--- a/include/uapi/linux/fsinfo.h
+++ b/include/uapi/linux/fsinfo.h
@@ -265,6 +265,7 @@ enum fsinfo_param_specification_type {
 	FSINFO_PARAM_SPEC_IS_U32_OCTAL,
 	FSINFO_PARAM_SPEC_IS_U32_HEX,
 	FSINFO_PARAM_SPEC_IS_S32,
+	FSINFO_PARAM_SPEC_IS_U64,
 	FSINFO_PARAM_SPEC_IS_ENUM,
 	FSINFO_PARAM_SPEC_IS_STRING,
 	FSINFO_PARAM_SPEC_IS_BLOB,
diff --git a/kernel/cgroup/cgroup-v1.c b/kernel/cgroup/cgroup-v1.c
index d5ae888b8c57..d20128d00fbe 100644
--- a/kernel/cgroup/cgroup-v1.c
+++ b/kernel/cgroup/cgroup-v1.c
@@ -14,6 +14,7 @@
 #include <linux/pid_namespace.h>
 #include <linux/cgroupstats.h>
 #include <linux/fs_parser.h>
+#include <linux/fsinfo.h>
 
 #include <trace/events/cgroup.h>
 
@@ -948,6 +949,76 @@ const struct fs_parameter_description cgroup1_fs_parameters = {
 	.no_source	= true,
 };
 
+static int cgroup1_fsinfo(struct kernfs_root *kf_root, struct fsinfo_kparams *params)
+{
+	struct cgroup_root *root = cgroup_root_from_kf(kf_root);
+	struct cgroup_subsys *ss;
+	const char *str = NULL;
+	unsigned int Mth;
+	int ret = 0, ssid;
+
+	switch (params->request) {
+	case FSINFO_ATTR_PARAMETER:
+		if (params->Mth && params->Nth != nr__cgroup1_params)
+			return -ENODATA;
+		switch (params->Nth) {
+		case Opt_all:
+			return 0;
+		case Opt_clone_children:
+			if (test_bit(CGRP_CPUSET_CLONE_CHILDREN, &root->cgrp.flags))
+				str = "clone_children";
+			goto string;
+		case Opt_cpuset_v2_mode:
+			if (root->flags & CGRP_ROOT_CPUSET_V2_MODE)
+				str = "noprefix";
+			goto string;
+		case Opt_name:
+			if (strlen(root->name))
+				return sprintf(params->buffer, "name=%s", root->name);
+			return 0;
+		case Opt_none:
+			return 0;
+		case Opt_noprefix:
+			if (root->flags & CGRP_ROOT_NOPREFIX)
+				str = "noprefix";
+			goto string;
+		case Opt_release_agent:
+			spin_lock(&release_agent_path_lock);
+			if (strlen(root->release_agent_path))
+				ret = sprintf(params->buffer, "release_agent=%s",
+					      root->release_agent_path);
+			spin_unlock(&release_agent_path_lock);
+			return ret;
+		case Opt_xattr:
+			if (root->flags & CGRP_ROOT_XATTR)
+				str = "noprefix";
+			goto string;
+		case nr__cgroup1_params:
+			Mth = params->Mth;
+			for_each_subsys(ss, ssid) {
+				if (Mth == 0) {
+					if (root->subsys_mask & (1 << ssid))
+						str = ss->legacy_name;
+					goto string;
+				}
+				Mth--;
+			}
+			return -ENODATA;
+		default:
+			return -ENODATA;
+		}
+
+	default:
+		return -EAGAIN; /* Tell kernfs to call generic_fsinfo() */
+	}
+
+string:
+	if (!str)
+		return 0;
+	strcpy(params->buffer, str);
+	return strlen(params->buffer);
+}
+
 int cgroup1_parse_param(struct fs_context *fc, struct fs_parameter *param)
 {
 	struct cgroup_fs_context *ctx = cgroup_fc2context(fc);
@@ -1138,6 +1209,7 @@ static int cgroup1_reconfigure(struct kernfs_root *kf_root, struct fs_context *f
 struct kernfs_syscall_ops cgroup1_kf_syscall_ops = {
 	.rename			= cgroup1_rename,
 	.show_options		= cgroup1_show_options,
+	.fsinfo			= cgroup1_fsinfo,
 	.reconfigure		= cgroup1_reconfigure,
 	.mkdir			= cgroup_mkdir,
 	.rmdir			= cgroup_rmdir,
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 3c3c40cad257..6d147377d318 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -55,6 +55,7 @@
 #include <linux/nsproxy.h>
 #include <linux/file.h>
 #include <linux/fs_parser.h>
+#include <linux/fsinfo.h>
 #include <linux/sched/cputime.h>
 #include <net/sock.h>
 
@@ -1786,6 +1787,35 @@ static int cgroup_show_options(struct seq_file *seq, struct kernfs_root *kf_root
 	return 0;
 }
 
+static int cgroup_fsinfo(struct kernfs_root *kf_root, struct fsinfo_kparams *params)
+{
+	const char *str = NULL;
+
+	switch (params->request) {
+	case FSINFO_ATTR_PARAMETER:
+		if (params->Mth)
+			return -ENODATA;
+		switch (params->Nth) {
+		case Opt_nsdelegate:
+			if (current->nsproxy->cgroup_ns == &init_cgroup_ns &&
+			    cgrp_dfl_root.flags & CGRP_ROOT_NS_DELEGATE)
+				str = "nsdelegate";
+			goto string;
+		default:
+			return -ENODATA;
+		}
+
+	default:
+		return -EAGAIN; /* Tell kernfs to call generic_fsinfo() */
+	}
+
+string:
+	if (!str)
+		return 0;
+	strcpy(params->buffer, str);
+	return strlen(params->buffer);
+}
+
 static void apply_cgroup_root_flags(unsigned int root_flags)
 {
 	if (current->nsproxy->cgroup_ns == &init_cgroup_ns) {
@@ -5260,6 +5290,7 @@ int cgroup_rmdir(struct kernfs_node *kn)
 
 static struct kernfs_syscall_ops cgroup_kf_syscall_ops = {
 	.show_options		= cgroup_show_options,
+	.fsinfo			= cgroup_fsinfo,
 	.reconfigure		= cgroup_reconfigure,
 	.mkdir			= cgroup_mkdir,
 	.rmdir			= cgroup_rmdir,
diff --git a/samples/vfs/test-fs-query.c b/samples/vfs/test-fs-query.c
index 25c69d0df084..511541d12b9e 100644
--- a/samples/vfs/test-fs-query.c
+++ b/samples/vfs/test-fs-query.c
@@ -46,6 +46,7 @@ static const char *param_types[NR__FSINFO_PARAM_SPEC] = {
 	[FSINFO_PARAM_SPEC_IS_U32_OCTAL]	= "octal",
 	[FSINFO_PARAM_SPEC_IS_U32_HEX]		= "hex",
 	[FSINFO_PARAM_SPEC_IS_S32]		= "s32",
+	[FSINFO_PARAM_SPEC_IS_U64]		= "u64",
 	[FSINFO_PARAM_SPEC_IS_ENUM]		= "enum",
 	[FSINFO_PARAM_SPEC_IS_STRING]		= "string",
 	[FSINFO_PARAM_SPEC_IS_BLOB]		= "binary",
