+_INLINE_ void *kmalloc_array(unsigned n, unsigned size,
+ int flags EXT2FS_ATTR((unused)))
+{
+ if (n && (~0U)/n < size)
+ return NULL;
+ return malloc(n * size);
+}
+
+_INLINE_ __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)),
+ __u32 crc, const void *address,
+ unsigned int length)
+{
+ return ext2fs_crc32c_le(crc, address, length);
+}
+
+_INLINE_ void jbd2_descriptor_block_csum_set(journal_t *j,
+ struct buffer_head *bh)
+{
+ struct jbd2_journal_block_tail *tail;
+ __u32 csum;
+
+ if (!jbd2_journal_has_csum_v2or3(j))
+ return;
+
+ tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize -
+ sizeof(struct jbd2_journal_block_tail));
+ tail->t_checksum = 0;
+ csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
+ tail->t_checksum = cpu_to_be32(csum);
+}