shithub: lwext4

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ext4_bcache: do not flush data in an invalid buffer.

--- a/lwext4/ext4_bcache.c

+++ b/lwext4/ext4_bcache.c

@@ -232,7 +232,8 @@

 	if (!buf->refctr) {

 		RB_INSERT(ext4_buf_lru, &bc->lru_root, buf);

 		/* This buffer is ready to be flushed. */

-		if (ext4_bcache_test_flag(buf, BC_DIRTY)) {

+		if (ext4_bcache_test_flag(buf, BC_DIRTY) &&

+		    ext4_bcache_test_flag(buf, BC_UPTODATE)) {

 			if (bc->bdev->cache_write_back &&

 			    !ext4_bcache_test_flag(buf, BC_FLUSH))

 				ext4_bcache_insert_dirty_node(bc, buf);