43 				  struct buffer_head *bh)  in write_mmp_block_thawed()  argument
45 	struct mmp_struct *mmp = (struct mmp_struct *)(bh->b_data);  in write_mmp_block_thawed()
48 	lock_buffer(bh);  in write_mmp_block_thawed()
49 	bh->b_end_io = end_buffer_write_sync;  in write_mmp_block_thawed()
50 	get_bh(bh);  in write_mmp_block_thawed()
51 	submit_bh(REQ_OP_WRITE | REQ_SYNC | REQ_META | REQ_PRIO, bh);  in write_mmp_block_thawed()
52 	wait_on_buffer(bh);  in write_mmp_block_thawed()
53 	if (unlikely(!buffer_uptodate(bh)))  in write_mmp_block_thawed()
58 static int write_mmp_block(struct super_block *sb, struct buffer_head *bh)  in write_mmp_block()  argument
67 	err = write_mmp_block_thawed(sb, bh);  in write_mmp_block()
76 static int read_mmp_block(struct super_block *sb, struct buffer_head **bh,  in read_mmp_block()  argument
82 	if (*bh)  in read_mmp_block()
83 		clear_buffer_uptodate(*bh);  in read_mmp_block()
88 	if (!*bh) {  in read_mmp_block()
89 		*bh = sb_getblk(sb, mmp_block);  in read_mmp_block()
90 		if (!*bh) {  in read_mmp_block()
96 	lock_buffer(*bh);  in read_mmp_block()
97 	ret = ext4_read_bh(*bh, REQ_META | REQ_PRIO, NULL, false);  in read_mmp_block()
101 	mmp = (struct mmp_struct *)((*bh)->b_data);  in read_mmp_block()
112 	brelse(*bh);  in read_mmp_block()
113 	*bh = NULL;  in read_mmp_block()
140 	struct buffer_head *bh = EXT4_SB(sb)->s_mmp_bh;  in kmmpd()  local
152 	mmp = (struct mmp_struct *)(bh->b_data);  in kmmpd()
178 		retval = write_mmp_block(sb, bh);  in kmmpd()
246 	retval = write_mmp_block(sb, bh);  in kmmpd()
283 	struct buffer_head *bh = NULL;  in ext4_multi_mount_protect()  local
297 	retval = read_mmp_block(sb, &bh, mmp_block);  in ext4_multi_mount_protect()
301 	mmp = (struct mmp_struct *)(bh->b_data);  in ext4_multi_mount_protect()
337 	retval = read_mmp_block(sb, &bh, mmp_block);  in ext4_multi_mount_protect()
340 	mmp = (struct mmp_struct *)(bh->b_data);  in ext4_multi_mount_protect()
359 	retval = write_mmp_block_thawed(sb, bh);  in ext4_multi_mount_protect()
372 	retval = read_mmp_block(sb, &bh, mmp_block);  in ext4_multi_mount_protect()
375 	mmp = (struct mmp_struct *)(bh->b_data);  in ext4_multi_mount_protect()
383 	EXT4_SB(sb)->s_mmp_bh = bh;  in ext4_multi_mount_protect()
387 		 "%pg", bh->b_bdev);  in ext4_multi_mount_protect()
406 	brelse(bh);  in ext4_multi_mount_protect()