diff options
Diffstat (limited to 'sys/kern/sys_process.c')
| -rw-r--r-- | sys/kern/sys_process.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c index ff9640a..432138c 100644 --- a/sys/kern/sys_process.c +++ b/sys/kern/sys_process.c @@ -216,7 +216,7 @@ proc_rwmem(struct proc *p, struct uio *uio) vm_object_t backing_object, object = NULL; vm_offset_t pageno = 0; /* page number */ vm_prot_t reqprot; - int error, writing; + int error, fault_flags, writing; /* * Assert that someone has locked this vmspace. (Should be @@ -234,6 +234,7 @@ proc_rwmem(struct proc *p, struct uio *uio) writing = uio->uio_rw == UIO_WRITE; reqprot = writing ? (VM_PROT_WRITE | VM_PROT_OVERRIDE_WRITE) : VM_PROT_READ; + fault_flags = writing ? VM_FAULT_DIRTY : VM_FAULT_NORMAL; /* * Only map in one page at a time. We don't have to, but it @@ -268,7 +269,7 @@ proc_rwmem(struct proc *p, struct uio *uio) /* * Fault the page on behalf of the process */ - error = vm_fault(map, pageno, reqprot, VM_FAULT_NORMAL); + error = vm_fault(map, pageno, reqprot, fault_flags); if (error) { error = EFAULT; break; |
