126d60823a
if the filesystem performed short write and we are skipping the page due to this. Propogate write error from the pager back to the callers of vm_pageout_flush(). Report the failure to write a page from the requested range as the FALSE return value from vm_object_page_clean(), and propagate it back to msync(2) to return EIO to usermode. While there, convert the clearobjflags variable in the vm_object_page_clean() and arguments of the helper functions to boolean. PR: kern/165927 Reviewed by: alc MFC after: 2 weeks
111 lines
3.8 KiB
C
111 lines
3.8 KiB
C
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* The Mach Operating System project at Carnegie-Mellon University.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)vm_pageout.h 8.2 (Berkeley) 1/12/94
|
|
*
|
|
*
|
|
* Copyright (c) 1987, 1990 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Avadis Tevanian, Jr.
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _VM_VM_PAGEOUT_H_
|
|
#define _VM_VM_PAGEOUT_H_
|
|
|
|
/*
|
|
* Header file for pageout daemon.
|
|
*/
|
|
|
|
/*
|
|
* Exported data structures.
|
|
*/
|
|
|
|
extern int vm_page_max_wired;
|
|
extern int vm_pages_needed; /* should be some "event" structure */
|
|
extern int vm_pageout_pages_needed;
|
|
extern int vm_pageout_deficit;
|
|
extern int vm_pageout_page_count;
|
|
|
|
/*
|
|
* Swap out requests
|
|
*/
|
|
#define VM_SWAP_NORMAL 1
|
|
#define VM_SWAP_IDLE 2
|
|
|
|
#define VM_OOM_MEM 1
|
|
#define VM_OOM_SWAPZ 2
|
|
|
|
/*
|
|
* Exported routines.
|
|
*/
|
|
|
|
/*
|
|
* Signal pageout-daemon and wait for it.
|
|
*/
|
|
|
|
extern void pagedaemon_wakeup(void);
|
|
#define VM_WAIT vm_wait()
|
|
#define VM_WAITPFAULT vm_waitpfault()
|
|
extern void vm_wait(void);
|
|
extern void vm_waitpfault(void);
|
|
|
|
#ifdef _KERNEL
|
|
boolean_t vm_pageout_fallback_object_lock(vm_page_t, vm_page_t *);
|
|
int vm_pageout_flush(vm_page_t *, int, int, int, int *, boolean_t *);
|
|
void vm_pageout_oom(int shortage);
|
|
boolean_t vm_pageout_page_lock(vm_page_t, vm_page_t *);
|
|
void vm_contig_grow_cache(int, vm_paddr_t, vm_paddr_t);
|
|
#endif
|
|
#endif /* _VM_VM_PAGEOUT_H_ */
|