Turned off debug output again - also temporarily removed the file cache warning

about our block_io module not honouring the total length in read_pages().
Removed drops into the debugger when there is a block without an "original"
data buffer - that's completely normal and happens when someone asks for
a cleared block that is not yet in the cache.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14437 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/cache/block_cache.cpp

@@ -30,7 +30,7 @@
 //	3) dirty blocks are only written back if asked for
 //	4) blocks are never removed yet
 
-#define TRACE_BLOCK_CACHE
+//#define TRACE_BLOCK_CACHE
 #ifdef TRACE_BLOCK_CACHE
 #	define TRACE(x)	dprintf x
 #else
@@ -793,12 +793,6 @@ cache_abort_sub_transaction(void *_cache, int32 id)
 	for (; block != NULL; block = next) {
 		next = block->transaction_next;
 
-		if (block->original == NULL) {
-			// an unchanged block in the transaction?
-panic("unchanged block in transaction!");
-			continue;
-		}
-
 		if (block->parent_data != block->data) {
 			// the block has been changed and must be restored
 			TRACE(("cache_abort_sub_transaction(id = %ld): restored contents of block %Ld\n",
@@ -836,12 +830,6 @@ cache_start_sub_transaction(void *_cache, int32 id)
 	for (; block != NULL; block = next) {
 		next = block->transaction_next;
 
-		if (block->original == NULL) {
-			// an unchanged block in the transaction?
-panic("unchanged block in transaction!");
-			continue;
-		}
-
 		if (transaction->has_sub_transaction && block->parent_data != block->data) {
 			// there already is an older sub transaction - we acknowledge
 			// its changes and move its blocks up to the parent