patch-2.4.3 linux/arch/sparc/mm/fault.c
Next file: linux/arch/sparc/mm/init.c
Previous file: linux/arch/sparc/kernel/sys_sunos.c
Back to the patch index
Back to the overall index
- Lines: 81
- Date:
Sun Mar 25 18:14:21 2001
- Orig file:
v2.4.2/linux/arch/sparc/mm/fault.c
- Orig date:
Mon Jan 1 10:37:41 2001
diff -u --recursive --new-file v2.4.2/linux/arch/sparc/mm/fault.c linux/arch/sparc/mm/fault.c
@@ -1,4 +1,4 @@
-/* $Id: fault.c,v 1.118 2000/12/29 07:52:41 anton Exp $
+/* $Id: fault.c,v 1.119 2001/03/24 09:36:10 davem Exp $
* fault.c: Page fault handlers for the Sparc.
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
@@ -224,7 +224,7 @@
if (in_interrupt() || !mm)
goto no_context;
- down(&mm->mmap_sem);
+ down_read(&mm->mmap_sem);
/*
* The kernel referencing a bad kernel pointer can lock up
@@ -274,7 +274,7 @@
default:
goto out_of_memory;
}
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
return;
/*
@@ -282,7 +282,7 @@
* Fix it, but check if it's kernel or user first..
*/
bad_area:
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
bad_area_nosemaphore:
/* User mode accesses just cause a SIGSEGV */
@@ -338,14 +338,14 @@
* us unable to handle the page fault gracefully.
*/
out_of_memory:
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
printk("VM: killing process %s\n", tsk->comm);
if (from_user)
do_exit(SIGKILL);
goto no_context;
do_sigbus:
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
info.si_signo = SIGBUS;
info.si_errno = 0;
info.si_code = BUS_ADRERR;
@@ -479,7 +479,7 @@
printk("wf<pid=%d,wr=%d,addr=%08lx>\n",
tsk->pid, write, address);
#endif
- down(&mm->mmap_sem);
+ down_read(&mm->mmap_sem);
vma = find_vma(mm, address);
if(!vma)
goto bad_area;
@@ -500,10 +500,10 @@
}
if (!handle_mm_fault(mm, vma, address, write))
goto do_sigbus;
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
return;
bad_area:
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
#if 0
printk("Window whee %s [%d]: segfaults at %08lx\n",
tsk->comm, tsk->pid, address);
@@ -518,7 +518,7 @@
return;
do_sigbus:
- up(&mm->mmap_sem);
+ up_read(&mm->mmap_sem);
info.si_signo = SIGBUS;
info.si_errno = 0;
info.si_code = BUS_ADRERR;
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)