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authorbde <bde@FreeBSD.org>1995-11-18 12:49:14 +0000
committerbde <bde@FreeBSD.org>1995-11-18 12:49:14 +0000
commitf6f9517a5825f41cb61cfd85c13bfacdb0b52ffa (patch)
treeefcdbb7d5fc878abee92757538ca83d8fc05a975 /sys/fs
parentfc2b88c806acd1b512b39021639befaacc7c4005 (diff)
downloadFreeBSD-src-f6f9517a5825f41cb61cfd85c13bfacdb0b52ffa.zip
FreeBSD-src-f6f9517a5825f41cb61cfd85c13bfacdb0b52ffa.tar.gz
KNFized spec_getpages_idone() and spec_getpages().
Moved misplaced #includes. Completed function pointer declarations.
Diffstat (limited to 'sys/fs')
-rw-r--r--sys/fs/specfs/spec_vnops.c86
1 files changed, 43 insertions, 43 deletions
diff --git a/sys/fs/specfs/spec_vnops.c b/sys/fs/specfs/spec_vnops.c
index b9ed634..db91648 100644
--- a/sys/fs/specfs/spec_vnops.c
+++ b/sys/fs/specfs/spec_vnops.c
@@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
- * $Id: spec_vnops.c,v 1.16 1995/10/23 02:22:47 dyson Exp $
+ * $Id: spec_vnops.c,v 1.17 1995/11/09 08:16:15 bde Exp $
*/
#include <sys/param.h>
@@ -48,6 +48,11 @@
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/disklabel.h>
+
+#include <vm/vm.h>
+#include <vm/vm_pager.h>
+#include <vm/vnode_pager.h>
+
#include <miscfs/specfs/specdev.h>
struct vnode *speclisth[SPECHSZ];
@@ -102,9 +107,7 @@ struct vnodeopv_desc spec_vnodeop_opv_desc =
VNODEOP_SET(spec_vnodeop_opv_desc);
-#include <vm/vm.h>
-#include <vm/vm_pager.h>
-#include <vm/vnode_pager.h>
+static void spec_getpages_iodone __P((struct buf *bp));
/*
* Trivial lookup routine that always fails.
@@ -223,7 +226,8 @@ spec_read(ap)
daddr_t bn, nextbn;
long bsize, bscale;
struct partinfo dpart;
- int n, on, majordev, (*ioctl)();
+ int n, on, majordev;
+ d_ioctl_t *ioctl;
int error = 0;
dev_t dev;
@@ -559,7 +563,7 @@ spec_close(ap)
{
register struct vnode *vp = ap->a_vp;
dev_t dev = vp->v_rdev;
- int (*devclose) __P((dev_t, int, int, struct proc *));
+ d_close_t *devclose;
int mode, error;
switch (vp->v_type) {
@@ -712,49 +716,51 @@ spec_badop()
/* NOTREACHED */
}
-static void spec_getpages_iodone(struct buf *bp) {
+static void
+spec_getpages_iodone(bp)
+ struct buf *bp;
+{
+
bp->b_flags |= B_DONE;
wakeup(bp);
}
-/*
- * get page routine
- */
int
spec_getpages(ap)
struct vop_getpages_args *ap;
{
vm_offset_t kva;
- int i, size;
+ int error;
+ int i, pcount, size, s;
daddr_t blkno;
struct buf *bp;
- int s;
- int error = 0;
- int pcount;
+ error = 0;
pcount = round_page(ap->a_count) / PAGE_SIZE;
+
/*
- * calculate the size of the transfer
+ * Calculate the size of the transfer.
*/
blkno = (ap->a_m[0]->offset + ap->a_offset) / DEV_BSIZE;
/*
- * round up physical size for real devices
+ * Round up physical size for real devices.
*/
size = (ap->a_count + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1);
bp = getpbuf();
- kva = (vm_offset_t) bp->b_data;
+ kva = (vm_offset_t)bp->b_data;
/*
- * and map the pages to be read into the kva
+ * Map the pages to be read into the kva.
*/
pmap_qenter(kva, ap->a_m, pcount);
- /* build a minimal buffer header */
+ /* Build a minimal buffer header. */
bp->b_flags = B_BUSY | B_READ | B_CALL;
bp->b_iodone = spec_getpages_iodone;
- /* B_PHYS is not set, but it is nice to fill this in */
+
+ /* B_PHYS is not set, but it is nice to fill this in. */
bp->b_proc = curproc;
bp->b_rcred = bp->b_wcred = bp->b_proc->p_ucred;
if (bp->b_rcred != NOCRED)
@@ -770,32 +776,29 @@ spec_getpages(ap)
cnt.v_vnodein++;
cnt.v_vnodepgsin += pcount;
- /* do the input */
+ /* Do the input. */
VOP_STRATEGY(bp);
- if (bp->b_flags & B_ASYNC) {
- return VM_PAGER_PEND;
- }
+ if (bp->b_flags & B_ASYNC)
+ return (VM_PAGER_PEND);
s = splbio();
- /* we definitely need to be at splbio here */
- while ((bp->b_flags & B_DONE) == 0) {
+ /* We definitely need to be at splbio here. */
+ while ((bp->b_flags & B_DONE) == 0)
tsleep(bp, PVM, "vnread", 0);
- }
+
splx(s);
+
if ((bp->b_flags & B_ERROR) != 0)
error = EIO;
- if (!error) {
- if (ap->a_count != pcount * PAGE_SIZE) {
- bzero((caddr_t) kva + ap->a_count,
- PAGE_SIZE * pcount - ap->a_count);
- }
- }
+ if (!error && ap->a_count != pcount * PAGE_SIZE)
+ bzero((caddr_t)kva + ap->a_count,
+ PAGE_SIZE * pcount - ap->a_count);
pmap_qremove(kva, pcount);
/*
- * free the buffer header back to the swap buffer pool
+ * Free the buffer header back to the swap buffer pool.
*/
relpbuf(bp);
@@ -804,29 +807,26 @@ spec_getpages(ap)
ap->a_m[i]->dirty = 0;
ap->a_m[i]->valid = VM_PAGE_BITS_ALL;
if (i != ap->a_reqpage) {
-
/*
- * whether or not to leave the page activated is up in
+ * Whether or not to leave the page activated is up in
* the air, but we should put the page on a page queue
- * somewhere. (it already is in the object). Result:
+ * somewhere (it already is in the object). Result:
* It appears that emperical results show that
* deactivating pages is best.
*/
/*
- * just in case someone was asking for this page we
- * now tell them that it is ok to use
+ * Just in case someone was asking for this page we
+ * now tell them that it is ok to use.
*/
if (!error) {
vm_page_deactivate(ap->a_m[i]);
PAGE_WAKEUP(ap->a_m[i]);
- } else {
+ } else
vnode_pager_freepage(ap->a_m[i]);
- }
}
}
- if (error) {
+ if (error)
printf("spec_getpages: I/O read error\n");
- }
return (error ? VM_PAGER_ERROR : VM_PAGER_OK);
}
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