--- dyld/dyld-44.2/src/dyldAPIs.cpp
+++ dyld/dyld-43/src/dyldAPIs.cpp
@@ -1394,7 +1394,7 @@
 	if ( handle == RTLD_NEXT ) {
 		void* callerAddress = __builtin_return_address(1); // note layers: 1: real client, 0: libSystem glue
 		ImageLoader* callerImage = dyld::findImageContainingAddress(callerAddress);
-		sym = callerImage->findExportedSymbolInDependentImages(underscoredName, &image); // don't search image, but do search what it links against
+		sym = callerImage->resolveSymbol(underscoredName, false, &image);
 		if ( sym != NULL ) {
 			return (void*)image->getExportedSymbolAddress(sym);
 		}
@@ -1409,7 +1409,11 @@
 	if ( handle == RTLD_SELF ) {
 		void* callerAddress = __builtin_return_address(1); // note layers: 1: real client, 0: libSystem glue
 		ImageLoader* callerImage = dyld::findImageContainingAddress(callerAddress);
-		sym = callerImage->findExportedSymbolInImageOrDependentImages(underscoredName, &image); // search image and what it links against
+		sym = callerImage->findExportedSymbol(underscoredName, NULL, false, &image);  // search first in calling image
+		if ( sym != NULL ) {
+			return (void*)image->getExportedSymbolAddress(sym);
+		}
+		sym = callerImage->resolveSymbol(underscoredName, false, &image);			// search what calling image links against
 		if ( sym != NULL ) {
 			return (void*)image->getExportedSymbolAddress(sym);
 		}
@@ -1423,7 +1427,12 @@
 	// real handle
 	image = (ImageLoader*)handle;
 	if ( dyld::validImage(image) ) {
-		sym = image->findExportedSymbolInImageOrDependentImages(underscoredName, &image); // search image and what it links against
+		ImageLoader* foundIn;
+		sym = image->findExportedSymbol(underscoredName, NULL, true, &foundIn);
+		if ( sym != NULL ) {
+			return (void*)(foundIn->getExportedSymbolAddress(sym));
+		}
+		sym = image->resolveSymbol(underscoredName, false, &image);// search what image links against
 		if ( sym != NULL ) {
 			return (void*)image->getExportedSymbolAddress(sym);
 		}
@@ -1436,24 +1445,6 @@
 		dlerrorSet("invalid handle passed to dlsym()");
 	}
 	return NULL;
-}
-
-
-static void commitRepreboundFiles(std::vector<ImageLoader*> files, bool unmapOld)
-{
-	// tell file system to flush all dirty buffers to disk
-	// after this sync, the _redoprebinding files will be on disk
-	sync();
-
-	// now commit (swap file) for each re-prebound image
-	// this only updates directories, since the files have already been flushed by previous sync()
-	for (std::vector<ImageLoader*>::iterator it=files.begin(); it != files.end(); it++) {
-		(*it)->reprebindCommit(dyld::gLinkContext, true, unmapOld);
-	}
-
-	// tell file system to flush all dirty buffers to disk
-	// this should flush out all directory changes caused by the file swapping
-	sync();
 }
 
 
@@ -1469,7 +1460,7 @@
 {
 	if ( dyld::gLogAPIs )
 		fprintf(stderr, "%s()\n", __func__);
-
+	
 	// list of requested dylibs actually loaded
 	std::vector<ImageLoader*> preboundImages;
 	
@@ -1561,36 +1552,35 @@
 			struct timeval currentTime = { 0 , 0 };
 			gettimeofday(&currentTime, NULL);
 			time_t timestamp = currentTime.tv_sec;
-			std::vector<ImageLoader*> updatedImages;
 			for (std::vector<ImageLoader*>::iterator it=preboundImages.begin(); it != preboundImages.end(); it++) {
-				uint64_t freespace = (*it)->reprebind(dyld::gLinkContext, timestamp);
-				updatedImages.push_back(*it);
+				(*it)->reprebind(dyld::gLinkContext, timestamp);
 				if(UPDATE_PREBINDING_PROGRESS & flags) {
 					fprintf(stdout, "update_prebinding: progress: %3u/%u\n", imageNumber, imageCount);
 					fflush(stdout);
 					imageNumber++;
 				}
-				// see if we are running low on disk space (less than 32MB is "low")
-				const uint64_t kMinFreeSpace = 32*1024*1024;  
-				if ( freespace < kMinFreeSpace ) {
-					if ( dyld::gLinkContext.verbosePrebinding || (UPDATE_PREBINDING_DRY_RUN & flags) )
-						fprintf(stderr, "update_prebinding: disk space down to %lluMB, committing %lu prebound files\n", freespace/(1024*1024), updatedImages.size());
-					// commit files processed so far, to free up more disk space
-					commitRepreboundFiles(updatedImages, true);
-					// empty list of temp files
-					updatedImages.clear();
-				}
 			}
 		
-			// commit them, don't need to unmap old, cause we are done
-			commitRepreboundFiles(updatedImages, false);
+			// tell file system to flush all dirty buffers to disk
+			// after this sync, all the _redoprebinding files will be on disk
+			sync();
+		
+			// now commit (swap file) for each re-prebound image
+			// this only updates directories, since the files have already been flushed by previous sync()
+			for (std::vector<ImageLoader*>::iterator it=preboundImages.begin(); it != preboundImages.end(); it++) {
+				(*it)->reprebindCommit(dyld::gLinkContext, true);
+			}
+		
+			// tell file system to flush all dirty buffers to disk
+			// this should flush out all directory changes caused by the file swapping
+			sync();
 		}
 	}
 	catch (const char* msg) {
 		// delete temp files
 		try {
 			for (std::vector<ImageLoader*>::iterator it=preboundImages.begin(); it != preboundImages.end(); it++) {
-				(*it)->reprebindCommit(dyld::gLinkContext, false, false);
+				(*it)->reprebindCommit(dyld::gLinkContext, false);
 			}
 		}
 		catch (const char* commitMsg) {