fs/zfs/zfs_vnops.c

340 	vm_page_t pp;
360 		if ((pp = vm_page_lookup(obj, OFF_TO_IDX(start))) != NULL &&
361 		    pp->valid) {
362 			if ((pp->oflags & VPO_BUSY) != 0) {
368 				vm_page_reference(pp);
369 				vm_page_sleep(pp, "zfsmwb");
372 		} else if (pp == NULL) {
373 			pp = vm_page_alloc(obj, OFF_TO_IDX(start),
377 			ASSERT(pp != NULL && !pp->valid);
378 			pp = NULL;
381 		if (pp != NULL) {
382 			ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL);
384 			vm_page_io_start(pp);
385 			pmap_remove_write(pp);
387 				vm_page_clear_dirty(pp, off, nbytes);
391 	return (pp);
395 page_unbusy(vm_page_t pp)
398 	vm_page_io_finish(pp);
399 	vm_object_pip_subtract(pp->object, 1);
406 	vm_page_t pp;
412 		if ((pp = vm_page_lookup(obj, OFF_TO_IDX(start))) != NULL &&
413 		    pp->valid) {
414 			if ((pp->oflags & VPO_BUSY) != 0) {
420 				vm_page_reference(pp);
421 				vm_page_sleep(pp, "zfsmwb");
425 			ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL);
426 			vm_page_lock(pp);
427 			vm_page_hold(pp);
428 			vm_page_unlock(pp);
431 			pp = NULL;
434 	return (pp);
438 page_unhold(vm_page_t pp)
441 	vm_page_lock(pp);
442 	vm_page_unhold(pp);
443 	vm_page_unlock(pp);
470 		vm_page_t pp;
473 		if ((pp = page_busy(vp, start, off, nbytes)) != NULL) {
476 			va = zfs_map_page(pp, &sf);
482 			page_unbusy(pp);
507 	vm_page_t pp;
524 		pp = vm_page_grab(obj, OFF_TO_IDX(start), VM_ALLOC_NOBUSY |
526 		if (pp->valid == 0) {
527 			vm_page_io_start(pp);
529 			va = zfs_map_page(pp, &sf);
536 			vm_page_io_finish(pp);
537 			vm_page_lock(pp);
539 				if (pp->wire_count == 0 && pp->valid == 0 &&
540 				    pp->busy == 0 && !(pp->oflags & VPO_BUSY))
541 					vm_page_free(pp);
543 				pp->valid = VM_PAGE_BITS_ALL;
544 				vm_page_activate(pp);
546 			vm_page_unlock(pp);
548 			ASSERT3U(pp->valid, ==, VM_PAGE_BITS_ALL);
590 		vm_page_t pp;
593 		if (pp = page_hold(vp, start)) {
598 			va = zfs_map_page(pp, &sf);
602 			page_unhold(pp);
4425 zfs_null_putapage(vnode_t *vp, page_t *pp, u_offset_t *offp,
4428 	pvn_write_done(pp, B_INVAL|B_FORCE|B_ERROR);
4436  *		pp	- page to push.
4451 zfs_putapage(vnode_t *vp, page_t *pp, u_offset_t *offp,
4461 	off = pp->p_offset;
4474 		pp = pvn_write_kluster(vp, pp, &off, &len, koff, klen, flags);
4489 		page_list_break(&pp, &trunc, npages);
4513 		caddr_t va = zfs_map_page(pp, S_READ);
4516 		zfs_unmap_page(pp, va);
4518 		err = dmu_write_pages(zfsvfs->z_os, zp->z_id, off, len, pp, tx);
4539 	pvn_write_done(pp, (err ? B_ERROR : 0) | flags);
4571 	page_t		*pp;
4619 			pp = page_lookup(vp, io_off,
4622 			pp = page_lookup_nowait(vp, io_off,
4626 		if (pp != NULL && pvn_getdirty(pp, flags)) {
4632 			err = zfs_putapage(vp, pp, &io_off, &io_len, flags, cr);
4760 	page_t *pp, *cur_pp;
4772 		pp = page_create_va(vp, io_off, io_len,
4778 		pp = pvn_read_kluster(vp, off, seg, addr, &io_off,
4781 	if (pp == NULL) {
4792 	cur_pp = pp;
4803 			pvn_read_done(pp, B_ERROR);
4817 	pvn_plist_init(pp, pl, plsz, off, io_len, rw);