ext4_bcache: add new flag BC_FLUSH.

[lwext4.git] / lwext4 / ext4_bcache.c

diff --git a/lwext4/ext4_bcache.c b/lwext4/ext4_bcache.c
index ab19c177c619a66dc45c48e4da572a8d5eb866ac..fb37f4434fde98bd2f48b157db4a574480db79cf 100644 (file)
--- a/lwext4/ext4_bcache.c
+++ b/lwext4/ext4_bcache.c
@@ -233,10 +233,13 @@ int ext4_bcache_free(struct ext4_bcache *bc, struct ext4_block *b)
                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 (bc->bdev->cache_write_back)
+                       if (bc->bdev->cache_write_back &&
+                           !ext4_bcache_test_flag(buf, BC_FLUSH))
                                ext4_bcache_insert_dirty_node(bc, buf);
-                       else
+                       else {
                                ext4_block_flush_buf(bc->bdev, buf);
+                               ext4_bcache_clear_flag(buf, BC_FLUSH);
+                       }
                }
 
                /* The buffer is invalidated...drop it. */