diff --git a/fs/logfs/journal.c b/fs/logfs/journal.c
index 2957bfc21927..fd44eeea5135 100644
--- a/fs/logfs/journal.c
+++ b/fs/logfs/journal.c
@@ -612,9 +612,9 @@ static size_t __logfs_write_je(struct super_block *sb, void *buf, u16 type,
 	if (len == 0)
 		return logfs_write_header(super, header, 0, type);
 
+	BUG_ON(len > sb->s_blocksize);
 	compr_len = logfs_compress(buf, data, len, sb->s_blocksize);
 	if (compr_len < 0 || type == JE_ANCHOR) {
-		BUG_ON(len > sb->s_blocksize);
 		memcpy(data, buf, len);
 		compr_len = len;
 		compr = COMPR_NONE;