-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2005 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * Author: Lai Siyao <lsy@clusterfs.com>
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * This file is part of Lustre, http://www.lustre.org.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Copyright (c) 2012, Whamcloud, Inc.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/llite/llite_capa.c
+ *
+ * Author: Lai Siyao <lsy@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_LLITE
*/
/* capas for oss writeback and those failed to renew */
-static LIST_HEAD(ll_idle_capas);
+static CFS_LIST_HEAD(ll_idle_capas);
static struct ptlrpc_thread ll_capa_thread;
-static struct list_head *ll_capa_list = &capa_list[CAPA_SITE_CLIENT];
+static cfs_list_t *ll_capa_list = &capa_list[CAPA_SITE_CLIENT];
/* llite capa renewal timer */
struct timer_list ll_capa_timer;
/* for debug: indicate whether capa on llite is enabled or not */
-static atomic_t ll_capa_debug = ATOMIC_INIT(0);
+static cfs_atomic_t ll_capa_debug = CFS_ATOMIC_INIT(0);
static unsigned long long ll_capa_renewed = 0;
static unsigned long long ll_capa_renewal_noent = 0;
static unsigned long long ll_capa_renewal_failed = 0;
static inline void update_capa_timer(struct obd_capa *ocapa, cfs_time_t expiry)
{
- if (time_before(expiry, ll_capa_timer.expires) ||
+ if (cfs_time_before(expiry, ll_capa_timer.expires) ||
!timer_pending(&ll_capa_timer)) {
mod_timer(&ll_capa_timer, expiry);
DEBUG_CAPA(D_SEC, &ocapa->c_capa,
/* if ll_capa_list has client capa to expire or ll_idle_capas has
* expired capa, return 1.
*/
- spin_lock(&capa_lock);
- if (!list_empty(ll_capa_list)) {
- ocapa = list_entry(ll_capa_list->next, struct obd_capa, c_list);
+ cfs_spin_lock(&capa_lock);
+ if (!cfs_list_empty(ll_capa_list)) {
+ ocapa = cfs_list_entry(ll_capa_list->next, struct obd_capa,
+ c_list);
expired = capa_is_to_expire(ocapa);
if (!expired)
update_capa_timer(ocapa, capa_renewal_time(ocapa));
- } else if (!list_empty(&ll_idle_capas)) {
- ocapa = list_entry(ll_idle_capas.next, struct obd_capa, c_list);
+ } else if (!cfs_list_empty(&ll_idle_capas)) {
+ ocapa = cfs_list_entry(ll_idle_capas.next, struct obd_capa,
+ c_list);
expired = capa_is_expired(ocapa);
if (!expired)
update_capa_timer(ocapa, ocapa->c_expiry);
}
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
if (expired)
DEBUG_CAPA(D_SEC, &ocapa->c_capa, "expired");
return expired;
}
-static inline int ll_capa_check_stop(void)
-{
- return (ll_capa_thread.t_flags & SVC_STOPPING) ? 1: 0;
-}
-
-static void sort_add_capa(struct obd_capa *ocapa, struct list_head *head)
+static void sort_add_capa(struct obd_capa *ocapa, cfs_list_t *head)
{
struct obd_capa *tmp;
- struct list_head *before = NULL;
+ cfs_list_t *before = NULL;
/* TODO: client capa is sorted by expiry, this could be optimized */
- list_for_each_entry_reverse(tmp, head, c_list) {
+ cfs_list_for_each_entry_reverse(tmp, head, c_list) {
if (cfs_time_aftereq(ocapa->c_expiry, tmp->c_expiry)) {
before = &tmp->c_list;
break;
}
LASSERT(&ocapa->c_list != before);
- list_add(&ocapa->c_list, before ?: head);
+ cfs_list_add(&ocapa->c_list, before ?: head);
}
static inline int obd_capa_open_count(struct obd_capa *oc)
{
struct ll_inode_info *lli = ll_i2info(oc->u.cli.inode);
- return atomic_read(&lli->lli_open_count);
+ return cfs_atomic_read(&lli->lli_open_count);
}
static void ll_delete_capa(struct obd_capa *ocapa)
LASSERT(lli->lli_mds_capa == ocapa);
lli->lli_mds_capa = NULL;
} else if (capa_for_oss(&ocapa->c_capa)) {
- list_del_init(&ocapa->u.cli.lli_list);
+ cfs_list_del_init(&ocapa->u.cli.lli_list);
}
DEBUG_CAPA(D_SEC, &ocapa->c_capa, "free client");
- list_del(&ocapa->c_list);
+ cfs_list_del_init(&ocapa->c_list);
capa_count[CAPA_SITE_CLIENT]--;
- free_capa(ocapa);
+ /* release the ref when alloc */
+ capa_put(ocapa);
}
/* three places where client capa is deleted:
cfs_daemonize("ll_capa");
- ll_capa_thread.t_flags = SVC_RUNNING;
- wake_up(&ll_capa_thread.t_ctl_waitq);
+ thread_set_flags(&ll_capa_thread, SVC_RUNNING);
+ cfs_waitq_signal(&ll_capa_thread.t_ctl_waitq);
while (1) {
l_wait_event(ll_capa_thread.t_ctl_waitq,
- (ll_capa_check_stop() || have_expired_capa()),
+ !thread_is_running(&ll_capa_thread) ||
+ have_expired_capa(),
&lwi);
- if (ll_capa_check_stop())
+ if (!thread_is_running(&ll_capa_thread))
break;
next = NULL;
- spin_lock(&capa_lock);
- list_for_each_entry_safe(ocapa, tmp, ll_capa_list, c_list) {
+ cfs_spin_lock(&capa_lock);
+ cfs_list_for_each_entry_safe(ocapa, tmp, ll_capa_list, c_list) {
+ __u64 ibits;
+
LASSERT(ocapa->c_capa.lc_opc != CAPA_OPC_OSS_TRUNC);
if (!capa_is_to_expire(ocapa)) {
break;
}
- list_del_init(&ocapa->c_list);
+ cfs_list_del_init(&ocapa->c_list);
/* for MDS capability, only renew those which belong to
* dir, or its inode is opened, or client holds LOOKUP
* lock.
*/
+ /* ibits may be changed by ll_have_md_lock() so we have
+ * to set it each time */
+ ibits = MDS_INODELOCK_LOOKUP;
if (capa_for_mds(&ocapa->c_capa) &&
!S_ISDIR(ocapa->u.cli.inode->i_mode) &&
obd_capa_open_count(ocapa) == 0 &&
!ll_have_md_lock(ocapa->u.cli.inode,
- MDS_INODELOCK_LOOKUP)) {
+ &ibits, LCK_MINMODE)) {
DEBUG_CAPA(D_SEC, &ocapa->c_capa,
"skip renewal for");
sort_add_capa(ocapa, &ll_idle_capas);
capa_get(ocapa);
ll_capa_renewed++;
- spin_unlock(&capa_lock);
-
+ cfs_spin_unlock(&capa_lock);
rc = md_renew_capa(ll_i2mdexp(inode), ocapa,
ll_update_capa);
- spin_lock(&capa_lock);
+ cfs_spin_lock(&capa_lock);
if (rc) {
DEBUG_CAPA(D_ERROR, &ocapa->c_capa,
"renew failed: %d", rc);
if (next)
update_capa_timer(next, capa_renewal_time(next));
- list_for_each_entry_safe(ocapa, tmp, &ll_idle_capas, c_list) {
+ cfs_list_for_each_entry_safe(ocapa, tmp, &ll_idle_capas,
+ c_list) {
if (!capa_is_expired(ocapa)) {
if (!next)
- update_capa_timer(ocapa, ocapa->c_expiry);
+ update_capa_timer(ocapa,
+ ocapa->c_expiry);
break;
}
- if (atomic_read(&ocapa->c_refc)) {
+ if (cfs_atomic_read(&ocapa->c_refc) > 1) {
DEBUG_CAPA(D_SEC, &ocapa->c_capa,
"expired(c_refc %d), don't release",
- atomic_read(&ocapa->c_refc));
+ cfs_atomic_read(&ocapa->c_refc));
/* don't try to renew any more */
- list_del_init(&ocapa->c_list);
+ cfs_list_del_init(&ocapa->c_list);
continue;
}
ll_delete_capa(ocapa);
}
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
}
- ll_capa_thread.t_flags = SVC_STOPPED;
- wake_up(&ll_capa_thread.t_ctl_waitq);
+ thread_set_flags(&ll_capa_thread, SVC_STOPPED);
+ cfs_waitq_signal(&ll_capa_thread.t_ctl_waitq);
RETURN(0);
}
void ll_capa_timer_callback(unsigned long unused)
{
- wake_up(&ll_capa_thread.t_ctl_waitq);
+ cfs_waitq_signal(&ll_capa_thread.t_ctl_waitq);
}
int ll_capa_thread_start(void)
int rc;
ENTRY;
- init_waitqueue_head(&ll_capa_thread.t_ctl_waitq);
+ cfs_waitq_init(&ll_capa_thread.t_ctl_waitq);
- rc = kernel_thread(capa_thread_main, NULL, 0);
+ rc = cfs_create_thread(capa_thread_main, NULL, 0);
if (rc < 0) {
CERROR("cannot start expired capa thread: rc %d\n", rc);
RETURN(rc);
}
- wait_event(ll_capa_thread.t_ctl_waitq,
- ll_capa_thread.t_flags & SVC_RUNNING);
+ cfs_wait_event(ll_capa_thread.t_ctl_waitq,
+ thread_is_running(&ll_capa_thread));
RETURN(0);
}
void ll_capa_thread_stop(void)
{
- ll_capa_thread.t_flags = SVC_STOPPING;
- wake_up(&ll_capa_thread.t_ctl_waitq);
- wait_event(ll_capa_thread.t_ctl_waitq,
- ll_capa_thread.t_flags & SVC_STOPPED);
-}
-
-static struct obd_capa *do_lookup_oss_capa(struct inode *inode, int opc)
-{
- struct ll_inode_info *lli = ll_i2info(inode);
- struct obd_capa *ocapa;
-
- /* inside capa_lock */
- list_for_each_entry(ocapa, &lli->lli_oss_capas, u.cli.lli_list) {
- if ((capa_opc(&ocapa->c_capa) & opc) != opc)
- continue;
-
- LASSERT(lu_fid_eq(capa_fid(&ocapa->c_capa),
- ll_inode2fid(inode)));
- LASSERT(ocapa->c_site == CAPA_SITE_CLIENT);
-
- DEBUG_CAPA(D_SEC, &ocapa->c_capa, "found client");
- return ocapa;
- }
-
- return NULL;
+ thread_set_flags(&ll_capa_thread, SVC_STOPPING);
+ cfs_waitq_signal(&ll_capa_thread.t_ctl_waitq);
+ cfs_wait_event(ll_capa_thread.t_ctl_waitq,
+ thread_is_stopped(&ll_capa_thread));
}
struct obd_capa *ll_osscapa_get(struct inode *inode, __u64 opc)
struct obd_capa *ocapa;
int found = 0;
- if ((ll_i2sbi(inode)->ll_flags & LL_SBI_OSS_CAPA) == 0)
- return NULL;
ENTRY;
+ if ((ll_i2sbi(inode)->ll_flags & LL_SBI_OSS_CAPA) == 0)
+ RETURN(NULL);
+
LASSERT(opc == CAPA_OPC_OSS_WRITE || opc == CAPA_OPC_OSS_RW ||
opc == CAPA_OPC_OSS_TRUNC);
- spin_lock(&capa_lock);
- list_for_each_entry(ocapa, &lli->lli_oss_capas, u.cli.lli_list) {
+ cfs_spin_lock(&capa_lock);
+ cfs_list_for_each_entry(ocapa, &lli->lli_oss_capas, u.cli.lli_list) {
if (capa_is_expired(ocapa))
continue;
if ((opc & CAPA_OPC_OSS_WRITE) &&
capa_opc_supported(&ocapa->c_capa, CAPA_OPC_OSS_WRITE)) {
- found = 1; break;
+ found = 1;
+ break;
} else if ((opc & CAPA_OPC_OSS_READ) &&
capa_opc_supported(&ocapa->c_capa,
CAPA_OPC_OSS_READ)) {
- found = 1; break;
+ found = 1;
+ break;
} else if ((opc & CAPA_OPC_OSS_TRUNC) &&
capa_opc_supported(&ocapa->c_capa, opc)) {
- found = 1; break;
+ found = 1;
+ break;
}
}
} else {
ocapa = NULL;
- if (atomic_read(&ll_capa_debug)) {
+ if (cfs_atomic_read(&ll_capa_debug)) {
CERROR("no capability for "DFID" opc "LPX64"\n",
PFID(&lli->lli_fid), opc);
- atomic_set(&ll_capa_debug, 0);
+ cfs_atomic_set(&ll_capa_debug, 0);
}
}
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
RETURN(ocapa);
}
ENTRY;
LASSERT(inode != NULL);
-
+
if ((ll_i2sbi(inode)->ll_flags & LL_SBI_MDS_CAPA) == 0)
RETURN(NULL);
- spin_lock(&capa_lock);
+ cfs_spin_lock(&capa_lock);
ocapa = capa_get(lli->lli_mds_capa);
- spin_unlock(&capa_lock);
- if (!ocapa && atomic_read(&ll_capa_debug)) {
+ cfs_spin_unlock(&capa_lock);
+ if (!ocapa && cfs_atomic_read(&ll_capa_debug)) {
CERROR("no mds capability for "DFID"\n", PFID(&lli->lli_fid));
- atomic_set(&ll_capa_debug, 0);
+ cfs_atomic_set(&ll_capa_debug, 0);
}
RETURN(ocapa);
DEBUG_CAPA(D_SEC, capa, "add MDS");
} else {
- spin_lock(&old->c_lock);
+ cfs_spin_lock(&old->c_lock);
old->c_capa = *capa;
- spin_unlock(&old->c_lock);
+ cfs_spin_unlock(&old->c_lock);
DEBUG_CAPA(D_SEC, capa, "update MDS");
- free_capa(ocapa);
+ capa_put(ocapa);
ocapa = old;
}
return ocapa;
}
+static struct obd_capa *do_lookup_oss_capa(struct inode *inode, int opc)
+{
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct obd_capa *ocapa;
+
+ /* inside capa_lock */
+ cfs_list_for_each_entry(ocapa, &lli->lli_oss_capas, u.cli.lli_list) {
+ if ((capa_opc(&ocapa->c_capa) & opc) != opc)
+ continue;
+
+ LASSERT(lu_fid_eq(capa_fid(&ocapa->c_capa),
+ ll_inode2fid(inode)));
+ LASSERT(ocapa->c_site == CAPA_SITE_CLIENT);
+
+ DEBUG_CAPA(D_SEC, &ocapa->c_capa, "found client");
+ return ocapa;
+ }
+
+ return NULL;
+}
+
static inline void inode_add_oss_capa(struct inode *inode,
struct obd_capa *ocapa)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct obd_capa *tmp;
- struct list_head *next = NULL;
+ cfs_list_t *next = NULL;
/* capa is sorted in lli_oss_capas so lookup can always find the
* latest one */
- list_for_each_entry(tmp, &lli->lli_oss_capas, u.cli.lli_list) {
+ cfs_list_for_each_entry(tmp, &lli->lli_oss_capas, u.cli.lli_list) {
if (cfs_time_after(ocapa->c_expiry, tmp->c_expiry)) {
next = &tmp->u.cli.lli_list;
break;
}
}
LASSERT(&ocapa->u.cli.lli_list != next);
- list_move_tail(&ocapa->u.cli.lli_list, next ?: &lli->lli_oss_capas);
+ cfs_list_move_tail(&ocapa->u.cli.lli_list, next ?: &lli->lli_oss_capas);
}
static struct obd_capa *do_add_oss_capa(struct inode *inode,
old = do_lookup_oss_capa(inode, capa_opc(capa) & CAPA_OPC_OSS_ONLY);
if (!old) {
ocapa->u.cli.inode = inode;
- INIT_LIST_HEAD(&ocapa->u.cli.lli_list);
+ CFS_INIT_LIST_HEAD(&ocapa->u.cli.lli_list);
capa_count[CAPA_SITE_CLIENT]++;
DEBUG_CAPA(D_SEC, capa, "add OSS");
} else {
- spin_lock(&old->c_lock);
+ cfs_spin_lock(&old->c_lock);
old->c_capa = *capa;
- spin_unlock(&old->c_lock);
+ cfs_spin_unlock(&old->c_lock);
DEBUG_CAPA(D_SEC, capa, "update OSS");
- free_capa(ocapa);
+ capa_put(ocapa);
ocapa = old;
}
struct obd_capa *ll_add_capa(struct inode *inode, struct obd_capa *ocapa)
{
- spin_lock(&capa_lock);
+ cfs_spin_lock(&capa_lock);
ocapa = capa_for_mds(&ocapa->c_capa) ? do_add_mds_capa(inode, ocapa) :
do_add_oss_capa(inode, ocapa);
/* truncate capa won't renew */
if (ocapa->c_capa.lc_opc != CAPA_OPC_OSS_TRUNC) {
set_capa_expiry(ocapa);
- list_del(&ocapa->c_list);
+ cfs_list_del_init(&ocapa->c_list);
sort_add_capa(ocapa, ll_capa_list);
update_capa_timer(ocapa, capa_renewal_time(ocapa));
}
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
- atomic_set(&ll_capa_debug, 1);
+ cfs_atomic_set(&ll_capa_debug, 1);
return ocapa;
}
if (IS_ERR(capa)) {
/* set error code */
rc = PTR_ERR(capa);
- spin_lock(&capa_lock);
+ cfs_spin_lock(&capa_lock);
if (rc == -ENOENT) {
DEBUG_CAPA(D_SEC, &ocapa->c_capa,
"renewal canceled because object removed");
if (rc == -EIO && !capa_is_expired(ocapa)) {
delay_capa_renew(ocapa, 120);
DEBUG_CAPA(D_ERROR, &ocapa->c_capa,
- "renewal failed: -EIO, retry in 2 mins");
+ "renewal failed: -EIO, "
+ "retry in 2 mins");
ll_capa_renewal_retries++;
GOTO(retry, rc);
} else {
}
}
- list_del(&ocapa->c_list);
+ cfs_list_del_init(&ocapa->c_list);
sort_add_capa(ocapa, &ll_idle_capas);
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
capa_put(ocapa);
iput(inode);
- return rc;
+ RETURN(rc);
}
- spin_lock(&ocapa->c_lock);
+ cfs_spin_lock(&ocapa->c_lock);
LASSERT(!memcmp(&ocapa->c_capa, capa,
- offsetof(struct lustre_capa, lc_flags)));
+ offsetof(struct lustre_capa, lc_opc)));
ocapa->c_capa = *capa;
set_capa_expiry(ocapa);
- spin_unlock(&ocapa->c_lock);
+ cfs_spin_unlock(&ocapa->c_lock);
- spin_lock(&capa_lock);
+ cfs_spin_lock(&capa_lock);
if (capa_for_oss(capa))
inode_add_oss_capa(inode, ocapa);
DEBUG_CAPA(D_SEC, capa, "renew");
EXIT;
retry:
- list_del_init(&ocapa->c_list);
+ cfs_list_del_init(&ocapa->c_list);
sort_add_capa(ocapa, ll_capa_list);
update_capa_timer(ocapa, capa_renewal_time(ocapa));
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
capa_put(ocapa);
iput(inode);
if (!S_ISREG(inode->i_mode))
return;
- atomic_inc(&lli->lli_open_count);
+ cfs_atomic_inc(&lli->lli_open_count);
}
void ll_capa_close(struct inode *inode)
if (!S_ISREG(inode->i_mode))
return;
- atomic_dec(&lli->lli_open_count);
+ cfs_atomic_dec(&lli->lli_open_count);
}
/* delete CAPA_OPC_OSS_TRUNC only */
LASSERT(ocapa->c_capa.lc_opc & CAPA_OPC_OSS_TRUNC);
DEBUG_CAPA(D_SEC, &ocapa->c_capa, "free truncate");
+ /* release ref when find */
capa_put(ocapa);
- spin_lock(&capa_lock);
- ll_delete_capa(ocapa);
- spin_unlock(&capa_lock);
+ if (likely(ocapa->c_capa.lc_opc == CAPA_OPC_OSS_TRUNC)) {
+ cfs_spin_lock(&capa_lock);
+ ll_delete_capa(ocapa);
+ cfs_spin_unlock(&capa_lock);
+ }
}
void ll_clear_inode_capas(struct inode *inode)
struct ll_inode_info *lli = ll_i2info(inode);
struct obd_capa *ocapa, *tmp;
- spin_lock(&capa_lock);
+ cfs_spin_lock(&capa_lock);
ocapa = lli->lli_mds_capa;
if (ocapa)
ll_delete_capa(ocapa);
-
- list_for_each_entry_safe(ocapa, tmp, &lli->lli_oss_capas,
- u.cli.lli_list)
+
+ cfs_list_for_each_entry_safe(ocapa, tmp, &lli->lli_oss_capas,
+ u.cli.lli_list)
ll_delete_capa(ocapa);
- spin_unlock(&capa_lock);
+ cfs_spin_unlock(&capa_lock);
}
void ll_print_capa_stat(struct ll_sb_info *sbi)
git://git.whamcloud.com / fs / lustre-release.git / blobdiff