summaryrefslogtreecommitdiffstats
path: root/sys
diff options
context:
space:
mode:
authoralc <alc@FreeBSD.org>2004-03-24 23:35:04 +0000
committeralc <alc@FreeBSD.org>2004-03-24 23:35:04 +0000
commitcab68d38d220a62ea8e133c93ef3c18d1ad3d14e (patch)
treeb1255b36ae3d7a60ff9add42a6ffc8d683d4bd46 /sys
parent95fba106c85456a62061f86ea8e10b6fd5c67d1f (diff)
downloadFreeBSD-src-cab68d38d220a62ea8e133c93ef3c18d1ad3d14e.zip
FreeBSD-src-cab68d38d220a62ea8e133c93ef3c18d1ad3d14e.tar.gz
Use uiomove_fromphys() instead of pmap_qenter() and pmap_qremove() in
proc_rwmem().
Diffstat (limited to 'sys')
-rw-r--r--sys/kern/sys_process.c10
1 files changed, 1 insertions, 9 deletions
diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c
index 636d10b..dcfad3d 100644
--- a/sys/kern/sys_process.c
+++ b/sys/kern/sys_process.c
@@ -152,7 +152,6 @@ 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;
- vm_offset_t kva;
int error, writing;
GIANT_REQUIRED;
@@ -177,8 +176,6 @@ proc_rwmem(struct proc *p, struct uio *uio)
reqprot = writing ? (VM_PROT_WRITE | VM_PROT_OVERRIDE_WRITE) :
VM_PROT_READ;
- kva = kmem_alloc_nofault(kernel_map, PAGE_SIZE);
-
/*
* Only map in one page at a time. We don't have to, but it
* makes things easier. This way is trivial - right?
@@ -262,14 +259,10 @@ proc_rwmem(struct proc *p, struct uio *uio)
*/
vm_map_lookup_done(tmap, out_entry);
- pmap_qenter(kva, &m, 1);
-
/*
* Now do the i/o move.
*/
- error = uiomove((caddr_t)(kva + page_offset), len, uio);
-
- pmap_qremove(kva, 1);
+ error = uiomove_fromphys(&m, page_offset, len, uio);
/*
* Release the page.
@@ -280,7 +273,6 @@ proc_rwmem(struct proc *p, struct uio *uio)
} while (error == 0 && uio->uio_resid > 0);
- kmem_free(kernel_map, kva, PAGE_SIZE);
vmspace_free(vm);
return (error);
}
OpenPOWER on IntegriCloud