btrfs: send: remove BUG_ON from name_cache_delete (57fb8910) · Commits · 戴 / test

If cleaning the name cache fails, we could try to proceed at the cost of some memory leak. This is not expected to happen often. Signed-off-by:

fs/btrfs/send.c

+9 −2

Original line number	Diff line number	Diff line
		@@ -1890,13 +1890,20 @@ static void name_cache_delete(struct send_ctx *sctx,

		nce_head = radix_tree_lookup(&sctx->name_cache,
		(unsigned long)nce->ino);
		BUG_ON(!nce_head);
		if (!nce_head) {
		btrfs_err(sctx->send_root->fs_info,
		"name_cache_delete lookup failed ino %llu cache size %d, leaking memory",
		nce->ino, sctx->name_cache_size);
		}

		list_del(&nce->radix_list);
		list_del(&nce->list);
		sctx->name_cache_size--;

		if (list_empty(nce_head)) {
		/*
		* We may not get to the final release of nce_head if the lookup fails
		*/
		if (nce_head && list_empty(nce_head)) {
		radix_tree_delete(&sctx->name_cache, (unsigned long)nce->ino);
		kfree(nce_head);
		}