| uipc_shm.c (324618) | uipc_shm.c (327785) |
|---|---|
| 1/*- 2 * Copyright (c) 2006, 2011 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 28 unchanged lines hidden (view full) --- 37 * 38 * (2) Add support for this file type to fstat(1). 39 * 40 * (3) Resource limits? Does this need its own resource limits or are the 41 * existing limits in mmap(2) sufficient? 42 */ 43 44#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2006, 2011 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 28 unchanged lines hidden (view full) --- 37 * 38 * (2) Add support for this file type to fstat(1). 39 * 40 * (3) Resource limits? Does this need its own resource limits or are the 41 * existing limits in mmap(2) sufficient? 42 */ 43 44#include <sys/cdefs.h> |
| 45__FBSDID("$FreeBSD: stable/11/sys/kern/uipc_shm.c 324618 2017-10-14 17:51:25Z markj $"); | 45__FBSDID("$FreeBSD: stable/11/sys/kern/uipc_shm.c 327785 2018-01-10 20:39:26Z markj $"); |
| 46 47#include "opt_capsicum.h" 48#include "opt_ktrace.h" 49 50#include <sys/param.h> 51#include <sys/capsicum.h> 52#include <sys/conf.h> 53#include <sys/fcntl.h> --- 389 unchanged lines hidden (view full) --- 443 if (base != 0) { 444 idx = OFF_TO_IDX(length); 445retry: 446 m = vm_page_lookup(object, idx); 447 if (m != NULL) { 448 if (vm_page_sleep_if_busy(m, "shmtrc")) 449 goto retry; 450 } else if (vm_pager_has_page(object, idx, NULL, NULL)) { | 46 47#include "opt_capsicum.h" 48#include "opt_ktrace.h" 49 50#include <sys/param.h> 51#include <sys/capsicum.h> 52#include <sys/conf.h> 53#include <sys/fcntl.h> --- 389 unchanged lines hidden (view full) --- 443 if (base != 0) { 444 idx = OFF_TO_IDX(length); 445retry: 446 m = vm_page_lookup(object, idx); 447 if (m != NULL) { 448 if (vm_page_sleep_if_busy(m, "shmtrc")) 449 goto retry; 450 } else if (vm_pager_has_page(object, idx, NULL, NULL)) { |
| 451 m = vm_page_alloc(object, idx, VM_ALLOC_NORMAL); 452 if (m == NULL) { 453 VM_OBJECT_WUNLOCK(object); 454 VM_WAIT; 455 VM_OBJECT_WLOCK(object); | 451 m = vm_page_alloc(object, idx, 452 VM_ALLOC_NORMAL | VM_ALLOC_WAITFAIL); 453 if (m == NULL) |
| 456 goto retry; | 454 goto retry; |
| 457 } | |
| 458 rv = vm_pager_get_pages(object, &m, 1, NULL, 459 NULL); 460 vm_page_lock(m); 461 if (rv == VM_PAGER_OK) { 462 vm_page_deactivate(m); 463 vm_page_unlock(m); 464 vm_page_xunbusy(m); 465 } else { --- 638 unchanged lines hidden --- | 455 rv = vm_pager_get_pages(object, &m, 1, NULL, 456 NULL); 457 vm_page_lock(m); 458 if (rv == VM_PAGER_OK) { 459 vm_page_deactivate(m); 460 vm_page_unlock(m); 461 vm_page_xunbusy(m); 462 } else { --- 638 unchanged lines hidden --- |