diff --git a/fs/9p/acl.c b/fs/9p/acl.c
index 67f8b57c67e0..135b26cee63a 100644
--- a/fs/9p/acl.c
+++ b/fs/9p/acl.c
@@ -151,6 +151,100 @@ struct posix_acl *v9fs_iop_get_acl(struct user_namespace *mnt_userns,
 	return v9fs_get_cached_acl(d_inode(dentry), type);
 }
 
+int v9fs_iop_set_acl(struct user_namespace *mnt_userns, struct dentry *dentry,
+		     struct posix_acl *acl, int type)
+{
+	int retval;
+	size_t size = 0;
+	void *value = NULL;
+	const char *acl_name;
+	struct v9fs_session_info *v9ses;
+	struct inode *inode = d_inode(dentry);
+
+	if (acl) {
+		retval = posix_acl_valid(inode->i_sb->s_user_ns, acl);
+		if (retval)
+			goto err_out;
+
+		size = posix_acl_xattr_size(acl->a_count);
+
+		value = kzalloc(size, GFP_NOFS);
+		if (!value) {
+			retval = -ENOMEM;
+			goto err_out;
+		}
+
+		retval = posix_acl_to_xattr(&init_user_ns, acl, value, size);
+		if (retval < 0)
+			goto err_out;
+	}
+
+	/*
+	 * set the attribute on the remote. Without even looking at the
+	 * xattr value. We leave it to the server to validate
+	 */
+	acl_name = posix_acl_xattr_name(type);
+	v9ses = v9fs_dentry2v9ses(dentry);
+	if ((v9ses->flags & V9FS_ACCESS_MASK) != V9FS_ACCESS_CLIENT) {
+		retval = v9fs_xattr_set(dentry, acl_name, value, size, 0);
+		goto err_out;
+	}
+
+	if (S_ISLNK(inode->i_mode)) {
+		retval = -EOPNOTSUPP;
+		goto err_out;
+	}
+
+	if (!inode_owner_or_capable(&init_user_ns, inode)) {
+		retval = -EPERM;
+		goto err_out;
+	}
+
+	switch (type) {
+	case ACL_TYPE_ACCESS:
+		if (acl) {
+			struct iattr iattr = {};
+			struct posix_acl *acl_mode = acl;
+
+			retval = posix_acl_update_mode(&init_user_ns, inode,
+						       &iattr.ia_mode,
+						       &acl_mode);
+			if (retval)
+				goto err_out;
+			if (!acl_mode) {
+				/*
+				 * ACL can be represented by the mode bits.
+				 * So don't update ACL below.
+				 */
+				kfree(value);
+				value = NULL;
+				size = 0;
+			}
+			iattr.ia_valid = ATTR_MODE;
+			/*
+			 * FIXME should we update ctime ?
+			 * What is the following setxattr update the mode ?
+			 */
+			v9fs_vfs_setattr_dotl(&init_user_ns, dentry, &iattr);
+		}
+		break;
+	case ACL_TYPE_DEFAULT:
+		if (!S_ISDIR(inode->i_mode)) {
+			retval = acl ? -EINVAL : 0;
+			goto err_out;
+		}
+		break;
+	}
+
+	retval = v9fs_xattr_set(dentry, acl_name, value, size, 0);
+	if (!retval)
+		set_cached_acl(inode, type, acl);
+
+err_out:
+	kfree(value);
+	return retval;
+}
+
 static int v9fs_set_acl(struct p9_fid *fid, int type, struct posix_acl *acl)
 {
 	int retval;
diff --git a/fs/9p/acl.h b/fs/9p/acl.h
index 359dab4da900..4c60a2bce5de 100644
--- a/fs/9p/acl.h
+++ b/fs/9p/acl.h
@@ -12,6 +12,8 @@ struct posix_acl *v9fs_iop_get_inode_acl(struct inode *inode, int type,
 				   bool rcu);
 struct posix_acl *v9fs_iop_get_acl(struct user_namespace *mnt_userns,
 					  struct dentry *dentry, int type);
+int v9fs_iop_set_acl(struct user_namespace *mnt_userns, struct dentry *dentry,
+		     struct posix_acl *acl, int type);
 int v9fs_acl_chmod(struct inode *inode, struct p9_fid *fid);
 int v9fs_set_create_acl(struct inode *inode, struct p9_fid *fid,
 			struct posix_acl *dacl, struct posix_acl *acl);
@@ -21,6 +23,7 @@ void v9fs_put_acl(struct posix_acl *dacl, struct posix_acl *acl);
 #else
 #define v9fs_iop_get_inode_acl	NULL
 #define v9fs_iop_get_acl NULL
+#define v9fs_iop_set_acl NULL
 static inline int v9fs_get_acl(struct inode *inode, struct p9_fid *fid)
 {
 	return 0;
diff --git a/fs/9p/vfs_inode_dotl.c b/fs/9p/vfs_inode_dotl.c
index a4211fcb9168..03c1743c4aff 100644
--- a/fs/9p/vfs_inode_dotl.c
+++ b/fs/9p/vfs_inode_dotl.c
@@ -985,6 +985,7 @@ const struct inode_operations v9fs_dir_inode_operations_dotl = {
 	.listxattr = v9fs_listxattr,
 	.get_inode_acl = v9fs_iop_get_inode_acl,
 	.get_acl = v9fs_iop_get_acl,
+	.set_acl = v9fs_iop_set_acl,
 };
 
 const struct inode_operations v9fs_file_inode_operations_dotl = {
@@ -993,6 +994,7 @@ const struct inode_operations v9fs_file_inode_operations_dotl = {
 	.listxattr = v9fs_listxattr,
 	.get_inode_acl = v9fs_iop_get_inode_acl,
 	.get_acl = v9fs_iop_get_acl,
+	.set_acl = v9fs_iop_set_acl,
 };
 
 const struct inode_operations v9fs_symlink_inode_operations_dotl = {