patch-2.4.3 linux/arch/sparc64/kernel/binfmt_aout32.c

• Lines: 54
• Date: Sun Mar 25 18:14:21 2001
• Orig file: v2.4.2/linux/arch/sparc64/kernel/binfmt_aout32.c
• Orig date: Wed Feb 21 18:20:15 2001

diff -u --recursive --new-file v2.4.2/linux/arch/sparc64/kernel/binfmt_aout32.c linux/arch/sparc64/kernel/binfmt_aout32.c
@@ -277,24 +277,24 @@
 			goto beyond_if;
 		}
 
-	        down(&current->mm->mmap_sem);
+	        down_write(&current->mm->mmap_sem);
 		error = do_mmap(bprm->file, N_TXTADDR(ex), ex.a_text,
 			PROT_READ | PROT_EXEC,
 			MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE,
 			fd_offset);
-	        up(&current->mm->mmap_sem);
+	        up_write(&current->mm->mmap_sem);
 
 		if (error != N_TXTADDR(ex)) {
 			send_sig(SIGKILL, current, 0);
 			return error;
 		}
 
-	        down(&current->mm->mmap_sem);
+	        down_write(&current->mm->mmap_sem);
  		error = do_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
 				PROT_READ | PROT_WRITE | PROT_EXEC,
 				MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE,
 				fd_offset + ex.a_text);
-	        up(&current->mm->mmap_sem);
+	        up_write(&current->mm->mmap_sem);
 		if (error != N_DATADDR(ex)) {
 			send_sig(SIGKILL, current, 0);
 			return error;
@@ -318,7 +318,8 @@
 		unsigned long pgd_cache;
 
 		pgd_cache = ((unsigned long)current->mm->pgd[0])<<11UL;
-		__asm__ __volatile__("stxa\t%0, [%1] %2"
+		__asm__ __volatile__("stxa\t%0, [%1] %2\n\t"
+				     "membar #Sync"
 				     : /* no outputs */
 				     : "r" (pgd_cache),
 				       "r" (TSB_REG), "i" (ASI_DMMU));
@@ -368,12 +369,12 @@
 	start_addr =  ex.a_entry & 0xfffff000;
 
 	/* Now use mmap to map the library into memory. */
-	down(&current->mm->mmap_sem);
+	down_write(&current->mm->mmap_sem);
 	error = do_mmap(file, start_addr, ex.a_text + ex.a_data,
 			PROT_READ | PROT_WRITE | PROT_EXEC,
 			MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE,
 			N_TXTOFF(ex));
-	up(&current->mm->mmap_sem);
+	up_write(&current->mm->mmap_sem);
 	retval = error;
 	if (error != start_addr)
 		goto out;