diff -Naur glibc-2.5.1-alt2.orig/elf/dl-load.c glibc-2.5.1-alt2/elf/dl-load.c
--- glibc-2.5.1-alt2.orig/elf/dl-load.c	2008-01-17 16:37:23 +0200
+++ glibc-2.5.1-alt2/elf/dl-load.c	2008-01-17 16:51:42 +0200
@@ -1213,6 +1213,11 @@
 	    goto call_lose_errno;
 	  }
 
+	if (GLRO(dl_madvise)) {
+	  //fadvising
+	  posix_fadvise (fd, c->mapoff, maplength, POSIX_FADV_WILLNEED);
+	}
+
 	l->l_map_end = l->l_map_start + maplength;
 	l->l_addr = l->l_map_start - c->mapstart;
 
diff -Naur glibc-2.5.1-alt2.orig/elf/dl-support.c glibc-2.5.1-alt2/elf/dl-support.c
--- glibc-2.5.1-alt2.orig/elf/dl-support.c	2008-01-17 16:37:27 +0200
+++ glibc-2.5.1-alt2/elf/dl-support.c	2008-01-17 16:44:37 +0200
@@ -42,6 +42,7 @@
 
 int _dl_debug_mask;
 int _dl_lazy;
+int _dl_madvise;
 ElfW(Addr) _dl_use_load_bias = -2;
 int _dl_dynamic_weak;
 
@@ -251,6 +252,8 @@
 
   _dl_lazy = *(__secure_getenv ("LD_BIND_NOW") ?: "") == '\0';
 
+  _dl_madvise = *(__secure_getenv ("LD_NOMADVISE") ?: "") == '\0';
+
   _dl_bind_not = *(__secure_getenv ("LD_BIND_NOT") ?: "") != '\0';
 
   _dl_dynamic_weak = *(__secure_getenv ("LD_DYNAMIC_WEAK") ?: "") == '\0';
diff -Naur glibc-2.5.1-alt2.orig/elf/rtld.c glibc-2.5.1-alt2/elf/rtld.c
--- glibc-2.5.1-alt2.orig/elf/rtld.c	2008-01-17 16:37:27 +0200
+++ glibc-2.5.1-alt2/elf/rtld.c	2008-01-17 16:43:49 +0200
@@ -152,6 +152,7 @@
     ._dl_lazy = 1,
     ._dl_fpu_control = _FPU_DEFAULT,
     ._dl_pointer_guard = 1,
+    ._dl_madvise = 1,
 
     /* Function pointers.  */
     ._dl_debug_printf = _dl_debug_printf,
@@ -2574,6 +2575,14 @@
 	  break;
 
 	case 9:
+	  /* Test whether we should not advise the kernel
+	     about memory usage.  */
+	  if (memcmp (envline, "NOMADVISE", 9) == 0)
+	    {
+	      GLRO(dl_madvise) = envline[10] == '\0';
+	      break;
+	    }
+
 	  /* Test whether we want to see the content of the auxiliary
 	     array passed up from the kernel.  */
 	  if (memcmp (envline, "SHOW_AUXV", 9) == 0)
diff -Naur glibc-2.5.1-alt2.orig/sysdeps/generic/ldsodefs.h glibc-2.5.1-alt2/sysdeps/generic/ldsodefs.h
--- glibc-2.5.1-alt2.orig/sysdeps/generic/ldsodefs.h	2008-01-17 16:37:26 +0200
+++ glibc-2.5.1-alt2/sysdeps/generic/ldsodefs.h	2008-01-17 16:43:49 +0200
@@ -573,6 +573,9 @@
   /* Do we do lazy relocations?  */
   EXTERN int _dl_lazy;
 
+  /* Should we advise kernel about memory usage? */
+  EXTERN int _dl_madvise;
+
   /* Nonzero if runtime lookups should not update the .got/.plt.  */
   EXTERN int _dl_bind_not;