cache_io(): Also requeue the last touched page to keep things roughly LRU

sorted.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35530 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/cache/file_cache.cpp

@@ -824,13 +824,6 @@ cache_io(void* _cacheRef, void* cookie, off_t offset, addr_t buffer,
 				cache->MarkPageUnbusy(page);
 			}
 
-			if (bytesLeft <= bytesInPage) {
-				// we've read the last page, so we're done!
-				locker.Unlock();
-				vm_page_unreserve_pages(&reservation);
-				return B_OK;
-			}
-
 			// If it is cached only, requeue the page, so the respective queue
 			// roughly remains LRU first sorted.
 			if (page->state == PAGE_STATE_CACHED
@@ -840,6 +833,13 @@ cache_io(void* _cacheRef, void* cookie, off_t offset, addr_t buffer,
 				DEBUG_PAGE_ACCESS_END(page);
 			}
 
+			if (bytesLeft <= bytesInPage) {
+				// we've read the last page, so we're done!
+				locker.Unlock();
+				vm_page_unreserve_pages(&reservation);
+				return B_OK;
+			}
+
 			// prepare a potential gap request
 			lastBuffer = buffer + bytesInPage;
 			lastLeft = bytesLeft - bytesInPage;