From 3c3f826d7e003fc9244939dd7a93f369a92aedca Mon Sep 17 00:00:00 2001
From: Alan Cox <alc@FreeBSD.org>
Date: Fri, 19 Apr 2002 02:08:33 +0000
Subject: [PATCH]  o Remove vm_map_growstack() from ia64's trap_pfault().  o
 Remove the acquisition and release of Giant from ia64's trap_pfault().   
 (vm_fault() still acquires it.)

---
 sys/ia64/ia64/trap.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/sys/ia64/ia64/trap.c b/sys/ia64/ia64/trap.c
index 1283899b6db..eac72728a24 100644
--- a/sys/ia64/ia64/trap.c
+++ b/sys/ia64/ia64/trap.c
@@ -540,7 +540,6 @@ trap(int vector, int imm, struct trapframe *framep)
 			td->td_pcb->pcb_onfault = 0;
 			goto out;
 		}
-		mtx_lock(&Giant);
 
 		/*
 		 * It is only a kernel address space fault iff:
@@ -592,20 +591,8 @@ trap(int vector, int imm, struct trapframe *framep)
 			++p->p_lock;
 			PROC_UNLOCK(p);
 
-			/*
-			 * Grow the stack if necessary
-			 */
-			/* vm_map_growstack fails only if va falls into
-			 * a growable stack region and the stack growth
-			 * fails.  It succeeds if va was not within
-			 * a growable stack region, or if the stack 
-			 * growth succeeded.
-			 */
-			if (vm_map_growstack(p, va) != KERN_SUCCESS)
-				rv = KERN_FAILURE;
-			else
-				/* Fault in the user page: */
-				rv = vm_fault(map, va, ftype,
+			/* Fault in the user page: */
+			rv = vm_fault(map, va, ftype,
 				      (ftype & VM_PROT_WRITE)
 				      ? VM_FAULT_DIRTY
 				      : VM_FAULT_NORMAL);
@@ -620,7 +607,6 @@ trap(int vector, int imm, struct trapframe *framep)
 			 */
 			rv = vm_fault(map, va, ftype, VM_FAULT_NORMAL);
 		}
-		mtx_unlock(&Giant);
 		if (rv == KERN_SUCCESS)
 			goto out;