shithub: lwext4

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ext4_journal: modify the first 4 bytes of the logged block when needed

--- a/src/ext4_journal.c

+++ b/src/ext4_journal.c

@@ -1980,6 +1980,9 @@

 		data = data_block.data;

 		memcpy(data, jbd_buf->block.data,

 			journal->block_size);

+		if (is_escape)

+			((struct jbd_bhdr *)data)->magic = 0;

+

 		ext4_bcache_set_dirty(data_block.buf);

 		ext4_bcache_set_flag(data_block.buf, BC_TMP);

 		rc = jbd_block_set(journal->jbd_fs, &data_block);