Commit c7cb82ce authored by Baokun Li's avatar Baokun Li
Browse files

writeback: kabi: KABI reservation for writeback 

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I9170A



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

    structure            size reserves reserved

    wb_completion        16      2      32
    bdi_writeback        784     6      832
    backing_dev_info     1184    4      1216
    writeback_control    104     3      128

Signed-off-by: default avatarBaokun Li <libaokun1@huawei.com>
parent 21b6ad68

include/linux/backing-dev-defs.h

+15 −0
Original line number Diff line number Diff line
@@ -63,6 +63,9 @@ enum wb_reason { 
struct wb_completion {

	atomic_t		cnt;

	wait_queue_head_t	*waitq;



	KABI_RESERVE(1)

	KABI_RESERVE(2)

};



#define __WB_COMPLETION_INIT(_waitq)	\
@@ -160,6 +163,13 @@ struct bdi_writeback { 
		struct rcu_head rcu;

	};

#endif



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

	KABI_RESERVE(5)

	KABI_RESERVE(6)

};



struct backing_dev_info {
@@ -198,6 +208,11 @@ struct backing_dev_info { 
#ifdef CONFIG_DEBUG_FS

	struct dentry *debug_dir;

#endif



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

	KABI_RESERVE(4)

};



struct wb_lock_cookie {

include/linux/writeback.h

+4 −0
Original line number Diff line number Diff line
@@ -89,6 +89,10 @@ struct writeback_control { 
	size_t wb_lcand_bytes;		/* bytes written by last candidate */

	size_t wb_tcand_bytes;		/* bytes written by this candidate */

#endif



	KABI_RESERVE(1)

	KABI_RESERVE(2)

	KABI_RESERVE(3)

};



static inline blk_opf_t wbc_to_write_flags(struct writeback_control *wbc)