| kern_alq.c (103830) | kern_alq.c (103995) |
|---|---|
| 1/* 2 * Copyright (c) 2002, Jeffrey Roberson <jeff@freebsd.org> 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 --- 9 unchanged lines hidden (view full) --- 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * | 1/* 2 * Copyright (c) 2002, Jeffrey Roberson <jeff@freebsd.org> 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 --- 9 unchanged lines hidden (view full) --- 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * |
| 26 * $FreeBSD: head/sys/kern/kern_alq.c 103830 2002-09-23 05:20:00Z jeff $ | 26 * $FreeBSD: head/sys/kern/kern_alq.c 103995 2002-09-26 07:38:56Z jeff $ |
| 27 * 28 */ 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/kthread.h> 34#include <sys/lock.h> --- 34 unchanged lines hidden (view full) --- 69static MALLOC_DEFINE(M_ALD, "ALD", "ALD"); 70 71/* 72 * The ald_mtx protects the ald_queues list and the ald_active list. 73 */ 74static struct mtx ald_mtx; 75static LIST_HEAD(, alq) ald_queues; 76static LIST_HEAD(, alq) ald_active; | 27 * 28 */ 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/kthread.h> 34#include <sys/lock.h> --- 34 unchanged lines hidden (view full) --- 69static MALLOC_DEFINE(M_ALD, "ALD", "ALD"); 70 71/* 72 * The ald_mtx protects the ald_queues list and the ald_active list. 73 */ 74static struct mtx ald_mtx; 75static LIST_HEAD(, alq) ald_queues; 76static LIST_HEAD(, alq) ald_active; |
| 77static struct proc *ald_thread; | |
| 78static int ald_shutingdown = 0; | 77static int ald_shutingdown = 0; |
| 78struct thread *ald_thread; 79static struct proc *ald_proc; |
|
| 79 80#define ALD_LOCK() mtx_lock(&ald_mtx) 81#define ALD_UNLOCK() mtx_unlock(&ald_mtx) 82 83/* Daemon functions */ 84static int ald_add(struct alq *); 85static int ald_rem(struct alq *); 86static void ald_startup(void *); --- 78 unchanged lines hidden (view full) --- 165static void 166ald_daemon(void) 167{ 168 int needwakeup; 169 struct alq *alq; 170 171 mtx_lock(&Giant); 172 | 80 81#define ALD_LOCK() mtx_lock(&ald_mtx) 82#define ALD_UNLOCK() mtx_unlock(&ald_mtx) 83 84/* Daemon functions */ 85static int ald_add(struct alq *); 86static int ald_rem(struct alq *); 87static void ald_startup(void *); --- 78 unchanged lines hidden (view full) --- 166static void 167ald_daemon(void) 168{ 169 int needwakeup; 170 struct alq *alq; 171 172 mtx_lock(&Giant); 173 |
| 174 ald_thread = FIRST_THREAD_IN_PROC(ald_proc); 175 |
|
| 173 EVENTHANDLER_REGISTER(shutdown_pre_sync, ald_shutdown, NULL, 174 SHUTDOWN_PRI_FIRST); 175 176 ALD_LOCK(); 177 178 for (;;) { 179 while ((alq = LIST_FIRST(&ald_active)) == NULL) 180 msleep(&ald_active, &ald_mtx, PWAIT, "aldslp", 0); --- 38 unchanged lines hidden (view full) --- 219 while (alq->aq_flags & (AQ_FLUSHING|AQ_ACTIVE)) { 220 alq->aq_flags |= AQ_WANTED; 221 ALQ_UNLOCK(alq); 222 tsleep(alq, PWAIT, "aldclose", 0); 223 ALQ_LOCK(alq); 224 } 225 ALQ_UNLOCK(alq); 226 | 176 EVENTHANDLER_REGISTER(shutdown_pre_sync, ald_shutdown, NULL, 177 SHUTDOWN_PRI_FIRST); 178 179 ALD_LOCK(); 180 181 for (;;) { 182 while ((alq = LIST_FIRST(&ald_active)) == NULL) 183 msleep(&ald_active, &ald_mtx, PWAIT, "aldslp", 0); --- 38 unchanged lines hidden (view full) --- 222 while (alq->aq_flags & (AQ_FLUSHING|AQ_ACTIVE)) { 223 alq->aq_flags |= AQ_WANTED; 224 ALQ_UNLOCK(alq); 225 tsleep(alq, PWAIT, "aldclose", 0); 226 ALQ_LOCK(alq); 227 } 228 ALQ_UNLOCK(alq); 229 |
| 227 vn_close(alq->aq_vp, FREAD|FWRITE, alq->aq_cred, | 230 vn_close(alq->aq_vp, FWRITE, alq->aq_cred, |
| 228 curthread); 229 crfree(alq->aq_cred); 230} 231 232/* 233 * Flush all pending data to disk. This operation will block. 234 */ 235static int --- 69 unchanged lines hidden (view full) --- 305 } 306 307 return(0); 308} 309 310static struct kproc_desc ald_kp = { 311 "ALQ Daemon", 312 ald_daemon, | 231 curthread); 232 crfree(alq->aq_cred); 233} 234 235/* 236 * Flush all pending data to disk. This operation will block. 237 */ 238static int --- 69 unchanged lines hidden (view full) --- 308 } 309 310 return(0); 311} 312 313static struct kproc_desc ald_kp = { 314 "ALQ Daemon", 315 ald_daemon, |
| 313 &ald_thread | 316 &ald_proc |
| 314}; 315 316SYSINIT(aldthread, SI_SUB_KTHREAD_IDLE, SI_ORDER_ANY, kproc_start, &ald_kp) 317SYSINIT(ald, SI_SUB_LOCK, SI_ORDER_ANY, ald_startup, NULL) 318 319 320/* User visible queue functions */ 321 --- 12 unchanged lines hidden (view full) --- 334 int flags; 335 int error; 336 int i; 337 338 *alqp = NULL; 339 td = curthread; 340 341 NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, file, td); | 317}; 318 319SYSINIT(aldthread, SI_SUB_KTHREAD_IDLE, SI_ORDER_ANY, kproc_start, &ald_kp) 320SYSINIT(ald, SI_SUB_LOCK, SI_ORDER_ANY, ald_startup, NULL) 321 322 323/* User visible queue functions */ 324 --- 12 unchanged lines hidden (view full) --- 337 int flags; 338 int error; 339 int i; 340 341 *alqp = NULL; 342 td = curthread; 343 344 NDINIT(&nd, LOOKUP, NOFOLLOW, UIO_SYSSPACE, file, td); |
| 342 flags = FREAD | FWRITE | O_NOFOLLOW | O_CREAT; | 345 flags = FWRITE | O_NOFOLLOW | O_CREAT; |
| 343 344 error = vn_open(&nd, &flags, 0); 345 if (error) 346 return (error); 347 348 NDFREE(&nd, NDF_ONLY_PNBUF); 349 /* We just unlock so we hold a reference */ 350 VOP_UNLOCK(nd.ni_vp, 0, td); --- 150 unchanged lines hidden --- | 346 347 error = vn_open(&nd, &flags, 0); 348 if (error) 349 return (error); 350 351 NDFREE(&nd, NDF_ONLY_PNBUF); 352 /* We just unlock so we hold a reference */ 353 VOP_UNLOCK(nd.ni_vp, 0, td); --- 150 unchanged lines hidden --- |