11 static __le32 ext4_mmp_csum(struct super_block *sb, struct mmp_struct *mmp)  in ext4_mmp_csum()  argument
17 	csum = ext4_chksum(sbi, sbi->s_csum_seed, (char *)mmp, offset);  in ext4_mmp_csum()
22 static int ext4_mmp_csum_verify(struct super_block *sb, struct mmp_struct *mmp)  in ext4_mmp_csum_verify()  argument
27 	return mmp->mmp_checksum == ext4_mmp_csum(sb, mmp);  in ext4_mmp_csum_verify()
30 static void ext4_mmp_csum_set(struct super_block *sb, struct mmp_struct *mmp)  in ext4_mmp_csum_set()  argument
35 	mmp->mmp_checksum = ext4_mmp_csum(sb, mmp);  in ext4_mmp_csum_set()
44 	struct mmp_struct *mmp = (struct mmp_struct *)(bh->b_data);  in write_mmp_block()  local
51 	ext4_mmp_csum_set(sb, mmp);  in write_mmp_block()
71 	struct mmp_struct *mmp;  in read_mmp_block()  local
93 	mmp = (struct mmp_struct *)((*bh)->b_data);  in read_mmp_block()
94 	if (le32_to_cpu(mmp->mmp_magic) != EXT4_MMP_MAGIC) {  in read_mmp_block()
98 	if (!ext4_mmp_csum_verify(sb, mmp)) {  in read_mmp_block()
114 void __dump_mmp_msg(struct super_block *sb, struct mmp_struct *mmp,  in __dump_mmp_msg()  argument
120 		       (unsigned long long)le64_to_cpu(mmp->mmp_time),  in __dump_mmp_msg()
121 		       (int)sizeof(mmp->mmp_nodename), mmp->mmp_nodename,  in __dump_mmp_msg()
122 		       (int)sizeof(mmp->mmp_bdevname), mmp->mmp_bdevname);  in __dump_mmp_msg()
133 	struct mmp_struct *mmp;  in kmmpd()  local
144 	mmp = (struct mmp_struct *)(bh->b_data);  in kmmpd()
145 	mmp->mmp_time = cpu_to_le64(ktime_get_real_seconds());  in kmmpd()
152 	mmp->mmp_check_interval = cpu_to_le16(mmp_check_interval);  in kmmpd()
153 	BUILD_BUG_ON(sizeof(mmp->mmp_bdevname) < BDEVNAME_SIZE);  in kmmpd()
154 	bdevname(bh->b_bdev, mmp->mmp_bdevname);  in kmmpd()
156 	memcpy(mmp->mmp_nodename, init_utsname()->nodename,  in kmmpd()
157 	       sizeof(mmp->mmp_nodename));  in kmmpd()
168 		mmp->mmp_seq = cpu_to_le32(seq);  in kmmpd()
169 		mmp->mmp_time = cpu_to_le64(ktime_get_real_seconds());  in kmmpd()
209 			if (mmp->mmp_seq != mmp_check->mmp_seq ||  in kmmpd()
210 			    memcmp(mmp->mmp_nodename, mmp_check->mmp_nodename,  in kmmpd()
211 				   sizeof(mmp->mmp_nodename))) {  in kmmpd()
231 		mmp->mmp_check_interval = cpu_to_le16(mmp_check_interval);  in kmmpd()
237 	mmp->mmp_seq = cpu_to_le32(EXT4_MMP_SEQ_CLEAN);  in kmmpd()
238 	mmp->mmp_time = cpu_to_le64(ktime_get_real_seconds());  in kmmpd()
284 	struct mmp_struct *mmp = NULL;  in ext4_multi_mount_protect()  local
300 	mmp = (struct mmp_struct *)(bh->b_data);  in ext4_multi_mount_protect()
309 	if (le16_to_cpu(mmp->mmp_check_interval) > mmp_check_interval)  in ext4_multi_mount_protect()
310 		mmp_check_interval = le16_to_cpu(mmp->mmp_check_interval);  in ext4_multi_mount_protect()
312 	seq = le32_to_cpu(mmp->mmp_seq);  in ext4_multi_mount_protect()
317 		dump_mmp_msg(sb, mmp, "fsck is running on the filesystem");  in ext4_multi_mount_protect()
337 	mmp = (struct mmp_struct *)(bh->b_data);  in ext4_multi_mount_protect()
338 	if (seq != le32_to_cpu(mmp->mmp_seq)) {  in ext4_multi_mount_protect()
339 		dump_mmp_msg(sb, mmp,  in ext4_multi_mount_protect()
349 	mmp->mmp_seq = cpu_to_le32(seq);  in ext4_multi_mount_protect()
366 	mmp = (struct mmp_struct *)(bh->b_data);  in ext4_multi_mount_protect()
367 	if (seq != le32_to_cpu(mmp->mmp_seq)) {  in ext4_multi_mount_protect()
368 		dump_mmp_msg(sb, mmp,  in ext4_multi_mount_protect()
379 					     (int)sizeof(mmp->mmp_bdevname),  in ext4_multi_mount_protect()
381 						      mmp->mmp_bdevname));  in ext4_multi_mount_protect()