Finalize GETPAGES layering scheme. Move the device GETPAGES
interface into specfs code. No need at this point to modify the PUTPAGES stuff except in the layered-type (NULL/UNION) filesystems.
This commit is contained in:
John Dyson
parent
9d45c3af90
commit
2c4488fce3
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=11701
@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)cd9660_vnops.c 8.3 (Berkeley) 1/23/94
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* $Id: cd9660_vnops.c,v 1.15 1995/08/02 13:00:40 dfr Exp $
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* $Id: cd9660_vnops.c,v 1.16 1995/09/04 00:20:05 dyson Exp $
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*/
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#include <sys/param.h>
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@ -1007,6 +1007,7 @@ struct vnodeopv_entry_desc cd9660_specop_entries[] = {
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{ &vop_vfree_desc, spec_vfree }, /* vfree */
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, cd9660_update }, /* update */
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{ &vop_getpages_desc, spec_getpages},
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{ &vop_bwrite_desc, vn_bwrite },
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{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
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};
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
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* $Id: spec_vnops.c,v 1.14 1995/09/04 00:20:37 dyson Exp $
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* $Id: spec_vnops.c,v 1.15 1995/10/06 09:47:58 phk Exp $
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*/
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#include <sys/param.h>
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@ -94,6 +94,7 @@ struct vnodeopv_entry_desc spec_vnodeop_entries[] = {
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, spec_update }, /* update */
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{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
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{ &vop_getpages_desc, spec_getpages}, /* getpages */
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{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
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};
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struct vnodeopv_desc spec_vnodeop_opv_desc =
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@ -101,6 +102,10 @@ struct vnodeopv_desc spec_vnodeop_opv_desc =
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VNODEOP_SET(spec_vnodeop_opv_desc);
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#include <vm/vm.h>
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#include <vm/vm_pager.h>
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#include <vm/vnode_pager.h>
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/*
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* Trivial lookup routine that always fails.
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*/
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@ -706,3 +711,122 @@ spec_badop()
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panic("spec_badop called");
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/* NOTREACHED */
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}
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static void spec_getpages_iodone(struct buf *bp) {
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bp->b_flags |= B_DONE;
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wakeup(bp);
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}
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/*
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* get page routine
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*/
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int
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spec_getpages(ap)
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struct vop_getpages_args *ap;
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{
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vm_offset_t kva;
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int i, size;
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daddr_t blkno;
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struct buf *bp;
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int s;
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int error = 0;
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int pcount;
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pcount = round_page(ap->a_count) / PAGE_SIZE;
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/*
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* calculate the size of the transfer
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*/
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blkno = (ap->a_m[0]->offset + ap->a_offset) / DEV_BSIZE;
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/*
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* round up physical size for real devices
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*/
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size = (ap->a_count + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1);
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bp = getpbuf();
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kva = (vm_offset_t) bp->b_data;
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/*
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* and map the pages to be read into the kva
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*/
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pmap_qenter(kva, ap->a_m, pcount);
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/* build a minimal buffer header */
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bp->b_flags = B_BUSY | B_READ | B_CALL;
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bp->b_iodone = spec_getpages_iodone;
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/* B_PHYS is not set, but it is nice to fill this in */
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bp->b_proc = curproc;
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bp->b_rcred = bp->b_wcred = bp->b_proc->p_ucred;
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if (bp->b_rcred != NOCRED)
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crhold(bp->b_rcred);
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if (bp->b_wcred != NOCRED)
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crhold(bp->b_wcred);
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bp->b_blkno = blkno;
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bp->b_lblkno = blkno;
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pbgetvp(ap->a_vp, bp);
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bp->b_bcount = size;
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bp->b_bufsize = size;
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cnt.v_vnodein++;
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cnt.v_vnodepgsin += pcount;
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/* do the input */
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VOP_STRATEGY(bp);
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if (bp->b_flags & B_ASYNC) {
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return VM_PAGER_PEND;
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}
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s = splbio();
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/* we definitely need to be at splbio here */
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while ((bp->b_flags & B_DONE) == 0) {
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tsleep(bp, PVM, "vnread", 0);
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}
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splx(s);
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if ((bp->b_flags & B_ERROR) != 0)
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error = EIO;
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if (!error) {
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if (ap->a_count != pcount * PAGE_SIZE) {
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bzero((caddr_t) kva + ap->a_count,
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PAGE_SIZE * pcount - ap->a_count);
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}
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}
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pmap_qremove(kva, pcount);
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/*
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* free the buffer header back to the swap buffer pool
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*/
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relpbuf(bp);
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for (i = 0; i < pcount; i++) {
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pmap_clear_modify(VM_PAGE_TO_PHYS(ap->a_m[i]));
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ap->a_m[i]->dirty = 0;
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ap->a_m[i]->valid = VM_PAGE_BITS_ALL;
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if (i != ap->a_reqpage) {
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/*
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* whether or not to leave the page activated is up in
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* the air, but we should put the page on a page queue
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* somewhere. (it already is in the object). Result:
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* It appears that emperical results show that
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* deactivating pages is best.
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*/
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/*
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* just in case someone was asking for this page we
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* now tell them that it is ok to use
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*/
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if (!error) {
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vm_page_deactivate(ap->a_m[i]);
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PAGE_WAKEUP(ap->a_m[i]);
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} else {
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vnode_pager_freepage(ap->a_m[i]);
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}
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}
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}
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if (error) {
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printf("spec_getpages: I/O read error\n");
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}
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return (error ? VM_PAGER_ERROR : VM_PAGER_OK);
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}
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@ -36,7 +36,7 @@
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* SUCH DAMAGE.
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*
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* @(#)cd9660_vnops.c 8.3 (Berkeley) 1/23/94
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* $Id: cd9660_vnops.c,v 1.15 1995/08/02 13:00:40 dfr Exp $
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* $Id: cd9660_vnops.c,v 1.16 1995/09/04 00:20:05 dyson Exp $
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*/
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#include <sys/param.h>
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@ -1007,6 +1007,7 @@ struct vnodeopv_entry_desc cd9660_specop_entries[] = {
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{ &vop_vfree_desc, spec_vfree }, /* vfree */
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, cd9660_update }, /* update */
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{ &vop_getpages_desc, spec_getpages},
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{ &vop_bwrite_desc, vn_bwrite },
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{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
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};
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)spec_vnops.c 8.6 (Berkeley) 4/9/94
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* $Id: spec_vnops.c,v 1.14 1995/09/04 00:20:37 dyson Exp $
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* $Id: spec_vnops.c,v 1.15 1995/10/06 09:47:58 phk Exp $
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*/
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#include <sys/param.h>
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@ -94,6 +94,7 @@ struct vnodeopv_entry_desc spec_vnodeop_entries[] = {
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, spec_update }, /* update */
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{ &vop_bwrite_desc, vn_bwrite }, /* bwrite */
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{ &vop_getpages_desc, spec_getpages}, /* getpages */
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{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
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};
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struct vnodeopv_desc spec_vnodeop_opv_desc =
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@ -101,6 +102,10 @@ struct vnodeopv_desc spec_vnodeop_opv_desc =
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VNODEOP_SET(spec_vnodeop_opv_desc);
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#include <vm/vm.h>
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#include <vm/vm_pager.h>
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#include <vm/vnode_pager.h>
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/*
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* Trivial lookup routine that always fails.
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*/
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@ -706,3 +711,122 @@ spec_badop()
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panic("spec_badop called");
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/* NOTREACHED */
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}
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static void spec_getpages_iodone(struct buf *bp) {
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bp->b_flags |= B_DONE;
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wakeup(bp);
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}
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/*
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* get page routine
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*/
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int
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spec_getpages(ap)
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struct vop_getpages_args *ap;
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{
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vm_offset_t kva;
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int i, size;
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daddr_t blkno;
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struct buf *bp;
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int s;
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int error = 0;
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int pcount;
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pcount = round_page(ap->a_count) / PAGE_SIZE;
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/*
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* calculate the size of the transfer
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*/
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blkno = (ap->a_m[0]->offset + ap->a_offset) / DEV_BSIZE;
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/*
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* round up physical size for real devices
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*/
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size = (ap->a_count + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1);
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bp = getpbuf();
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kva = (vm_offset_t) bp->b_data;
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/*
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* and map the pages to be read into the kva
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*/
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pmap_qenter(kva, ap->a_m, pcount);
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/* build a minimal buffer header */
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bp->b_flags = B_BUSY | B_READ | B_CALL;
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bp->b_iodone = spec_getpages_iodone;
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/* B_PHYS is not set, but it is nice to fill this in */
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bp->b_proc = curproc;
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bp->b_rcred = bp->b_wcred = bp->b_proc->p_ucred;
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if (bp->b_rcred != NOCRED)
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crhold(bp->b_rcred);
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if (bp->b_wcred != NOCRED)
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crhold(bp->b_wcred);
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bp->b_blkno = blkno;
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bp->b_lblkno = blkno;
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pbgetvp(ap->a_vp, bp);
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bp->b_bcount = size;
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bp->b_bufsize = size;
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cnt.v_vnodein++;
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cnt.v_vnodepgsin += pcount;
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/* do the input */
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VOP_STRATEGY(bp);
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if (bp->b_flags & B_ASYNC) {
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return VM_PAGER_PEND;
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}
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s = splbio();
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/* we definitely need to be at splbio here */
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while ((bp->b_flags & B_DONE) == 0) {
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tsleep(bp, PVM, "vnread", 0);
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}
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splx(s);
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if ((bp->b_flags & B_ERROR) != 0)
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error = EIO;
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if (!error) {
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if (ap->a_count != pcount * PAGE_SIZE) {
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bzero((caddr_t) kva + ap->a_count,
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PAGE_SIZE * pcount - ap->a_count);
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}
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}
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pmap_qremove(kva, pcount);
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/*
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* free the buffer header back to the swap buffer pool
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*/
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relpbuf(bp);
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for (i = 0; i < pcount; i++) {
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pmap_clear_modify(VM_PAGE_TO_PHYS(ap->a_m[i]));
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ap->a_m[i]->dirty = 0;
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ap->a_m[i]->valid = VM_PAGE_BITS_ALL;
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if (i != ap->a_reqpage) {
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/*
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* whether or not to leave the page activated is up in
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* the air, but we should put the page on a page queue
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* somewhere. (it already is in the object). Result:
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* It appears that emperical results show that
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* deactivating pages is best.
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*/
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/*
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* just in case someone was asking for this page we
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* now tell them that it is ok to use
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*/
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if (!error) {
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vm_page_deactivate(ap->a_m[i]);
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PAGE_WAKEUP(ap->a_m[i]);
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} else {
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vnode_pager_freepage(ap->a_m[i]);
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}
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}
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}
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if (error) {
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printf("spec_getpages: I/O read error\n");
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}
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return (error ? VM_PAGER_ERROR : VM_PAGER_OK);
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}
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)specdev.h 8.2 (Berkeley) 2/2/94
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* $Id: specdev.h,v 1.2 1994/08/02 07:45:30 davidg Exp $
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* $Id: specdev.h,v 1.3 1995/07/29 11:40:32 bde Exp $
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*/
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/*
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@ -118,6 +118,7 @@ int spec_print __P((struct vop_print_args *));
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#define spec_islocked ((int (*) __P((struct vop_islocked_args *)))nullop)
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int spec_pathconf __P((struct vop_pathconf_args *));
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int spec_advlock __P((struct vop_advlock_args *));
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int spec_getpages __P((struct vop_getpages_args *));
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#define spec_blkatoff ((int (*) __P((struct vop_blkatoff_args *)))spec_badop)
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#define spec_valloc ((int (*) __P((struct vop_valloc_args *)))spec_badop)
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#define spec_reallocblks \
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)ffs_vnops.c 8.7 (Berkeley) 2/3/94
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* $Id: ffs_vnops.c,v 1.14 1995/09/22 06:02:40 davidg Exp $
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* $Id: ffs_vnops.c,v 1.15 1995/09/25 06:00:59 dyson Exp $
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*/
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#include <sys/param.h>
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@ -158,6 +158,7 @@ struct vnodeopv_entry_desc ffs_specop_entries[] = {
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{ &vop_vfree_desc, ffs_vfree }, /* vfree */
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{ &vop_truncate_desc, spec_truncate }, /* truncate */
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{ &vop_update_desc, ffs_update }, /* update */
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{ &vop_getpages_desc, spec_getpages},
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{ &vop_bwrite_desc, vn_bwrite },
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{ (struct vnodeop_desc*)NULL, (int(*)())NULL }
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};
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@ -31,7 +31,7 @@
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* SUCH DAMAGE.
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*
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* @(#)ufs_readwrite.c 8.7 (Berkeley) 1/21/94
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* $Id: ufs_readwrite.c,v 1.12 1995/09/07 04:39:09 dyson Exp $
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* $Id: ufs_readwrite.c,v 1.13 1995/09/11 15:56:46 bde Exp $
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*/
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#ifdef LFS_READWRITE
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@ -319,11 +319,6 @@ WRITE(ap)
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#ifndef LFS_READWRITE
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static void ffs_getpages_iodone(struct buf *bp) {
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bp->b_flags |= B_DONE;
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wakeup(bp);
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}
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/*
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* get page routine
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*/
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@ -331,25 +326,28 @@ int
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ffs_getpages(ap)
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struct vop_getpages_args *ap;
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{
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vm_offset_t kva, foff;
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vm_offset_t foff, physoffset;
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int i, size, bsize;
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struct vnode *dp;
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struct buf *bp;
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int s;
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int error = 0;
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int contigbackwards, contigforwards;
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int pcontigbackwards, pcontigforwards;
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int firstcontigpage;
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daddr_t reqlblkno, reqblkno;
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int bbackwards, bforwards;
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int pbackwards, pforwards;
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int firstpage;
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int reqlblkno;
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daddr_t reqblkno;
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int poff;
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int pcount;
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int rtval;
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int pagesperblock;
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pcount = round_page(ap->a_count) / PAGE_SIZE;
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/*
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* if ANY DEV_BSIZE blocks are valid on a large filesystem block
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* then, the entire page is valid --
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*/
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if (ap->a_m[ap->a_reqpage]->valid) {
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ap->a_m[ap->a_reqpage]->valid = VM_PAGE_BITS_ALL;
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for (i = 0; i < ap->a_count; i++) {
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for (i = 0; i < pcount; i++) {
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if (i != ap->a_reqpage)
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vnode_pager_freepage(ap->a_m[i]);
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}
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@ -357,13 +355,19 @@ ffs_getpages(ap)
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}
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bsize = ap->a_vp->v_mount->mnt_stat.f_iosize;
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foff = ap->a_m[ap->a_reqpage]->offset;
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reqlblkno = foff / bsize;
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poff = (foff - reqlblkno * bsize) / PAGE_SIZE;
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if ( VOP_BMAP( ap->a_vp, reqlblkno, &dp, &reqblkno, &contigforwards,
|
||||
&contigbackwards) || (reqblkno == -1)) {
|
||||
for(i = 0; i < ap->a_count; i++) {
|
||||
/*
|
||||
* foff is the file offset of the required page
|
||||
* reqlblkno is the logical block that contains the page
|
||||
* poff is the index of the page into the logical block
|
||||
*/
|
||||
foff = ap->a_m[ap->a_reqpage]->offset + ap->a_offset;
|
||||
reqlblkno = foff / bsize;
|
||||
poff = (foff % bsize) / PAGE_SIZE;
|
||||
|
||||
if ( VOP_BMAP( ap->a_vp, reqlblkno, &dp, &reqblkno,
|
||||
&bforwards, &bbackwards) || (reqblkno == -1)) {
|
||||
for(i = 0; i < pcount; i++) {
|
||||
if (i != ap->a_reqpage)
|
||||
vnode_pager_freepage(ap->a_m[i]);
|
||||
}
|
||||
@ -378,130 +382,54 @@ ffs_getpages(ap)
|
||||
}
|
||||
}
|
||||
|
||||
reqblkno += (poff * PAGE_SIZE) / DEV_BSIZE;
|
||||
|
||||
firstcontigpage = 0;
|
||||
pcontigbackwards = 0;
|
||||
if (ap->a_reqpage > 0) {
|
||||
pcontigbackwards = poff + ((contigbackwards * bsize) / PAGE_SIZE);
|
||||
if (pcontigbackwards < ap->a_reqpage) {
|
||||
firstcontigpage = ap->a_reqpage - pcontigbackwards;
|
||||
for(i = 0; i < firstcontigpage; i++)
|
||||
physoffset = reqblkno * DEV_BSIZE + poff * PAGE_SIZE;
|
||||
pagesperblock = bsize / PAGE_SIZE;
|
||||
/*
|
||||
* find the first page that is contiguous...
|
||||
* note that pbackwards is the number of pages that are contiguous
|
||||
* backwards.
|
||||
*/
|
||||
firstpage = 0;
|
||||
if (ap->a_count) {
|
||||
pbackwards = poff + bbackwards * pagesperblock;
|
||||
if (ap->a_reqpage > pbackwards) {
|
||||
firstpage = ap->a_reqpage - pbackwards;
|
||||
for(i=0;i<firstpage;i++)
|
||||
vnode_pager_freepage(ap->a_m[i]);
|
||||
}
|
||||
}
|
||||
|
||||
pcontigforwards = ((bsize / PAGE_SIZE) - (poff + 1)) +
|
||||
(contigforwards * bsize) / PAGE_SIZE;
|
||||
if (pcontigforwards < (ap->a_count - (ap->a_reqpage + 1))) {
|
||||
for( i = ap->a_reqpage + pcontigforwards + 1; i < ap->a_count; i++)
|
||||
vnode_pager_freepage(ap->a_m[i]);
|
||||
ap->a_count = ap->a_reqpage + pcontigforwards + 1;
|
||||
}
|
||||
|
||||
if (firstcontigpage != 0) {
|
||||
for (i = firstcontigpage; i < ap->a_count; i++) {
|
||||
ap->a_m[i - firstcontigpage] = ap->a_m[i];
|
||||
/*
|
||||
* pforwards is the number of pages that are contiguous
|
||||
* after the current page.
|
||||
*/
|
||||
pforwards = (pagesperblock - (poff + 1)) +
|
||||
bforwards * pagesperblock;
|
||||
if (pforwards < (pcount - (ap->a_reqpage + 1))) {
|
||||
for( i = ap->a_reqpage + pforwards + 1; i < pcount; i++)
|
||||
vnode_pager_freepage(ap->a_m[i]);
|
||||
pcount = ap->a_reqpage + pforwards + 1;
|
||||
}
|
||||
ap->a_count -= firstcontigpage;
|
||||
ap->a_reqpage -= firstcontigpage;
|
||||
|
||||
/*
|
||||
* number of pages for I/O corrected for the non-contig pages at
|
||||
* the beginning of the array.
|
||||
*/
|
||||
pcount -= firstpage;
|
||||
}
|
||||
|
||||
/*
|
||||
* calculate the size of the transfer
|
||||
*/
|
||||
foff = ap->a_m[0]->offset;
|
||||
reqblkno -= (ap->a_m[ap->a_reqpage]->offset - foff) / DEV_BSIZE;
|
||||
size = ap->a_count * PAGE_SIZE;
|
||||
if ((foff + size) >
|
||||
|
||||
size = pcount * PAGE_SIZE;
|
||||
if ((ap->a_m[firstpage]->offset + size) >
|
||||
((vm_object_t) ap->a_vp->v_object)->un_pager.vnp.vnp_size)
|
||||
size = ((vm_object_t) ap->a_vp->v_object)->un_pager.vnp.vnp_size - foff;
|
||||
size = ((vm_object_t) ap->a_vp->v_object)->un_pager.vnp.vnp_size - ap->a_m[firstpage]->offset;
|
||||
|
||||
/*
|
||||
* round up physical size for real devices
|
||||
*/
|
||||
if (dp->v_type == VBLK || dp->v_type == VCHR)
|
||||
size = (size + DEV_BSIZE - 1) & ~(DEV_BSIZE - 1);
|
||||
physoffset -= ap->a_m[ap->a_reqpage]->offset;
|
||||
rtval = VOP_GETPAGES(dp, &ap->a_m[firstpage], size,
|
||||
(ap->a_reqpage - firstpage), physoffset);
|
||||
|
||||
bp = getpbuf();
|
||||
kva = (vm_offset_t) bp->b_data;
|
||||
|
||||
/*
|
||||
* and map the pages to be read into the kva
|
||||
*/
|
||||
pmap_qenter(kva, ap->a_m, ap->a_count);
|
||||
|
||||
/* build a minimal buffer header */
|
||||
bp->b_flags = B_BUSY | B_READ | B_CALL;
|
||||
bp->b_iodone = ffs_getpages_iodone;
|
||||
/* 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)
|
||||
crhold(bp->b_rcred);
|
||||
if (bp->b_wcred != NOCRED)
|
||||
crhold(bp->b_wcred);
|
||||
bp->b_blkno = reqblkno;
|
||||
pbgetvp(dp, bp);
|
||||
bp->b_bcount = size;
|
||||
bp->b_bufsize = size;
|
||||
|
||||
cnt.v_vnodein++;
|
||||
cnt.v_vnodepgsin += ap->a_count;
|
||||
|
||||
/* do the input */
|
||||
VOP_STRATEGY(bp);
|
||||
|
||||
s = splbio();
|
||||
/* 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 (size != ap->a_count * PAGE_SIZE)
|
||||
bzero((caddr_t) kva + size, PAGE_SIZE * ap->a_count - size);
|
||||
}
|
||||
pmap_qremove(kva, ap->a_count);
|
||||
|
||||
/*
|
||||
* free the buffer header back to the swap buffer pool
|
||||
*/
|
||||
relpbuf(bp);
|
||||
|
||||
for (i = 0; i < ap->a_count; i++) {
|
||||
pmap_clear_modify(VM_PAGE_TO_PHYS(ap->a_m[i]));
|
||||
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
|
||||
* the air, but we should put the page on a page queue
|
||||
* 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
|
||||
*/
|
||||
if (!error) {
|
||||
vm_page_deactivate(ap->a_m[i]);
|
||||
PAGE_WAKEUP(ap->a_m[i]);
|
||||
} else {
|
||||
vnode_pager_freepage(ap->a_m[i]);
|
||||
}
|
||||
}
|
||||
}
|
||||
if (error) {
|
||||
printf("ffs_getpages: I/O read error\n");
|
||||
}
|
||||
return (error ? VM_PAGER_ERROR : VM_PAGER_OK);
|
||||
return (rtval);
|
||||
}
|
||||
#endif
|
||||
|
||||
@ -38,7 +38,7 @@
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* from: @(#)vnode_pager.c 7.5 (Berkeley) 4/20/91
|
||||
* $Id: vnode_pager.c,v 1.49 1995/09/12 14:42:43 dyson Exp $
|
||||
* $Id: vnode_pager.c,v 1.50 1995/10/19 21:35:03 davidg Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
@ -188,8 +188,11 @@ vnode_pager_haspage(object, offset, before, after)
|
||||
{
|
||||
struct vnode *vp = object->handle;
|
||||
daddr_t bn;
|
||||
int err, run;
|
||||
daddr_t reqblock;
|
||||
int err, run, poff, bsize, pagesperblock;
|
||||
int poff;
|
||||
int bsize;
|
||||
int pagesperblock;
|
||||
|
||||
/*
|
||||
* If filesystem no longer mounted or offset beyond end of file we do
|
||||
@ -364,6 +367,9 @@ vnode_pager_addr(vp, address, run)
|
||||
if ((int) address < 0)
|
||||
return -1;
|
||||
|
||||
if (vp->v_mount == NULL)
|
||||
return -1;
|
||||
|
||||
bsize = vp->v_mount->mnt_stat.f_iosize;
|
||||
vblock = address / bsize;
|
||||
voffset = address % bsize;
|
||||
@ -413,6 +419,9 @@ vnode_pager_input_smlfs(object, m)
|
||||
int error = 0;
|
||||
|
||||
vp = object->handle;
|
||||
if (vp->v_mount == NULL)
|
||||
return VM_PAGER_BAD;
|
||||
|
||||
bsize = vp->v_mount->mnt_stat.f_iosize;
|
||||
|
||||
|
||||
@ -554,9 +563,9 @@ vnode_pager_getpages(object, m, count, reqpage)
|
||||
int rtval;
|
||||
struct vnode *vp;
|
||||
vp = object->handle;
|
||||
rtval = VOP_GETPAGES(vp, m, count, reqpage);
|
||||
rtval = VOP_GETPAGES(vp, m, count*PAGE_SIZE, reqpage, 0);
|
||||
if (rtval == EOPNOTSUPP)
|
||||
return vnode_pager_leaf_getpages(object, m, count, reqpage);
|
||||
return vnode_pager_leaf_getpages(object, m, count, reqpage, 0);
|
||||
else
|
||||
return rtval;
|
||||
}
|
||||
@ -578,6 +587,9 @@ vnode_pager_leaf_getpages(object, m, count, reqpage)
|
||||
int error = 0;
|
||||
|
||||
vp = object->handle;
|
||||
if (vp->v_mount == NULL)
|
||||
return VM_PAGER_BAD;
|
||||
|
||||
bsize = vp->v_mount->mnt_stat.f_iosize;
|
||||
|
||||
/* get the UNDERLYING device for the file with VOP_BMAP() */
|
||||
@ -792,9 +804,9 @@ vnode_pager_putpages(object, m, count, sync, rtvals)
|
||||
int rtval;
|
||||
struct vnode *vp;
|
||||
vp = object->handle;
|
||||
rtval = VOP_PUTPAGES(vp, m, count, sync, rtvals);
|
||||
rtval = VOP_PUTPAGES(vp, m, count*PAGE_SIZE, sync, rtvals, 0);
|
||||
if (rtval == EOPNOTSUPP)
|
||||
return vnode_pager_leaf_putpages(object, m, count, sync, rtvals);
|
||||
return vnode_pager_leaf_putpages(object, m, count, sync, rtvals, 0);
|
||||
else
|
||||
return rtval;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user