Commit 63101913 authored by Long Li's avatar Long Li
Browse files

dax: kabi: Reserve KABI slots for dax_* struct 

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I905SE


CVE: NA

--------------------------------

Add kabi slots in dax_* struct for future expansion.

struct			size(byte)	reserve(8*byte) now(byte)
dax_device		768		8		832
dax_operations		32		4		64
dax_holder_operations	8		3		32

Signed-off-by: default avatarLong Li <leo.lilong@huawei.com>
parent 4e766eab

drivers/dax/super.c

+9 −0
Original line number Diff line number Diff line
@@ -33,6 +33,15 @@ struct dax_device { 
	const struct dax_operations *ops;

	void *holder_data;

	const struct dax_holder_operations *holder_ops;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

	KABI_RESERVE(7)

	KABI_RESERVE(8)

};



static dev_t dax_devt;

include/linux/dax.h

+9 −0
Original line number Diff line number Diff line
@@ -41,6 +41,11 @@ struct dax_operations { 
	 */

	size_t (*recovery_write)(struct dax_device *dax_dev, pgoff_t pgoff,

			void *addr, size_t bytes, struct iov_iter *iter);



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

};



struct dax_holder_operations {
@@ -53,6 +58,10 @@ struct dax_holder_operations { 
	 */

	int (*notify_failure)(struct dax_device *dax_dev, u64 offset,

			u64 len, int mf_flags);



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

};



#if IS_ENABLED(CONFIG_DAX)