system/freebsd-src
system/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src synced 2024-10-05 08:00:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

o Revert vm_fault1() to its original name vm_fault(), eliminating the wrapper

Browse source 
that took its place for the purposes of acquiring and releasing Giant.
This commit is contained in:
Alan Cox 2002-04-30 03:44:34 +00:00
parent 71f9b2c0aa
commit 7788e21963
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=95764
1 changed files with 11 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
sys/vm/vm_fault.c
View file

@ -181,22 +181,9 @@ _unlock_things(struct faultstate *fs, int dealloc)
* The map in question must be referenced, and remains so.
* Caller may hold no locks.
*/
static int vm_fault1(vm_map_t, vm_offset_t, vm_prot_t, int);
int
vm_fault(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
int fault_flags)
{
int ret;
ret = vm_fault1(map, vaddr, fault_type, fault_flags);
mtx_unlock(&Giant);
return (ret);
}
static int
vm_fault1(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type,
int fault_flags)
{
vm_prot_t prot;
int result;
@ -228,11 +215,14 @@ RetryFault:;
if (growstack && result == KERN_INVALID_ADDRESS &&
map != kernel_map && curproc != NULL) {
result = vm_map_growstack(curproc, vaddr);
if (result != KERN_SUCCESS)
if (result != KERN_SUCCESS) {
mtx_unlock(&Giant);
return (KERN_FAILURE);
}
growstack = FALSE;
goto RetryFault;
}
mtx_unlock(&Giant);
return (result);
}
@ -247,7 +237,8 @@ RetryFault:;
VM_PROT_READ|VM_PROT_WRITE|VM_PROT_OVERRIDE_WRITE,
&fs.entry, &fs.first_object, &fs.first_pindex, &prot, &wired);
if (result != KERN_SUCCESS) {
return result;
mtx_unlock(&Giant);
return (result);
}
/*
@ -309,6 +300,7 @@ RetryFault:;
*/
if (fs.object->flags & OBJ_DEAD) {
unlock_and_deallocate(&fs);
mtx_unlock(&Giant);
return (KERN_PROTECTION_FAILURE);
}
@ -376,6 +368,7 @@ RetryFault:;
if (TRYPAGER || fs.object == fs.first_object) {
if (fs.pindex >= fs.object->size) {
unlock_and_deallocate(&fs);
mtx_unlock(&Giant);
return (KERN_PROTECTION_FAILURE);
}
@ -557,6 +550,7 @@ RetryFault:;
vm_page_free(fs.m);
fs.m = NULL;
unlock_and_deallocate(&fs);
mtx_unlock(&Giant);
return ((rv == VM_PAGER_ERROR) ? KERN_FAILURE : KERN_PROTECTION_FAILURE);
}
if (fs.object != fs.first_object) {
@ -775,6 +769,7 @@ RetryFault:;
if (result != KERN_SUCCESS) {
release_page(&fs);
unlock_and_deallocate(&fs);
mtx_unlock(&Giant);
return (result);
}
fs.lookup_still_valid = TRUE;
@ -887,8 +882,8 @@ RetryFault:;
*/
vm_page_wakeup(fs.m);
vm_object_deallocate(fs.first_object);
mtx_unlock(&Giant);
return (KERN_SUCCESS);
}
/*