diff --git a/fs/ocfs2/quota_local.c b/fs/ocfs2/quota_local.c
index 1a2c50a..21f9e71 100644
--- a/fs/ocfs2/quota_local.c
+++ b/fs/ocfs2/quota_local.c
@@ -1325,7 +1325,7 @@
 	return status;
 }
 
-static struct quota_format_ops ocfs2_format_ops = {
+static const struct quota_format_ops ocfs2_format_ops = {
 	.check_quota_file	= ocfs2_local_check_quota_file,
 	.read_file_info		= ocfs2_local_read_info,
 	.write_file_info	= ocfs2_global_write_info,
diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c
index 0edcf42..2ae757e 100644
--- a/fs/quota/quota_v1.c
+++ b/fs/quota/quota_v1.c
@@ -204,7 +204,7 @@
 	return ret;
 }
 
-static struct quota_format_ops v1_format_ops = {
+static const struct quota_format_ops v1_format_ops = {
 	.check_quota_file	= v1_check_quota_file,
 	.read_file_info		= v1_read_file_info,
 	.write_file_info	= v1_write_file_info,
diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c
index a5475fb..01f25ea 100644
--- a/fs/quota/quota_v2.c
+++ b/fs/quota/quota_v2.c
@@ -207,7 +207,7 @@
 	return 0;
 }
 
-static struct quota_format_ops v2_format_ops = {
+static const struct quota_format_ops v2_format_ops = {
 	.check_quota_file	= v2_check_quota_file,
 	.read_file_info		= v2_read_file_info,
 	.write_file_info	= v2_write_file_info,
diff --git a/include/linux/quota.h b/include/linux/quota.h
index ce9a9b2..f63c9d6 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -334,7 +334,7 @@
 
 struct quota_format_type {
 	int qf_fmt_id;	/* Quota format id */
-	struct quota_format_ops *qf_ops;	/* Operations of format */
+	const struct quota_format_ops *qf_ops;	/* Operations of format */
 	struct module *qf_owner;		/* Module implementing quota format */
 	struct quota_format_type *qf_next;
 };
@@ -394,7 +394,7 @@
 	struct rw_semaphore dqptr_sem;		/* serialize ops using quota_info struct, pointers from inode to dquots */
 	struct inode *files[MAXQUOTAS];		/* inodes of quotafiles */
 	struct mem_dqinfo info[MAXQUOTAS];	/* Information for each quota type */
-	struct quota_format_ops *ops[MAXQUOTAS];	/* Operations for each type */
+	const struct quota_format_ops *ops[MAXQUOTAS];	/* Operations for each type */
 };
 
 int register_quota_format(struct quota_format_type *fmt);