-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * Copyright (c) 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
*/
/* capas for oss writeback and those failed to renew */
-static LIST_HEAD(ll_idle_capas);
+static struct list_head ll_idle_capas = LIST_HEAD_INIT(ll_idle_capas);
static struct ptlrpc_thread ll_capa_thread;
static struct list_head *ll_capa_list = &capa_list[CAPA_SITE_CLIENT];
static unsigned long long ll_capa_renewal_failed = 0;
static unsigned long long ll_capa_renewal_retries = 0;
+static int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa);
+
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,
static inline int have_expired_capa(void)
{
- struct obd_capa *ocapa = NULL;
- int expired = 0;
-
- /* 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);
+ struct obd_capa *ocapa = NULL;
+ int expired = 0;
+
+ /* 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);
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 (!list_empty(&ll_idle_capas)) {
+ ocapa = 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);
+ 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;
+ if (expired)
+ DEBUG_CAPA(D_SEC, &ocapa->c_capa, "expired");
+ return expired;
}
static void sort_add_capa(struct obd_capa *ocapa, struct list_head *head)
{
struct obd_capa *tmp;
- struct list_head *before = NULL;
+ struct list_head *before = NULL;
/* TODO: client capa is sorted by expiry, this could be optimized */
- list_for_each_entry_reverse(tmp, head, c_list) {
+ 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);
+ 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);
+ struct ll_inode_info *lli = ll_i2info(oc->u.cli.inode);
+ return 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);
+ list_del_init(&ocapa->u.cli.lli_list);
}
DEBUG_CAPA(D_SEC, &ocapa->c_capa, "free client");
- list_del(&ocapa->c_list);
+ 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:
* 1. capa_thread_main(), main place to delete expired capa.
* 2. ll_clear_inode_capas() in ll_clear_inode().
- * 3. ll_truncate_free_capa() delete truncate capa explicitly in ll_truncate().
+ * 3. ll_truncate_free_capa() delete truncate capa explicitly in ll_setattr_ost().
*/
static int capa_thread_main(void *unused)
{
- struct obd_capa *ocapa, *tmp, *next;
- struct inode *inode = NULL;
- struct l_wait_info lwi = { 0 };
- int rc;
- ENTRY;
-
- cfs_daemonize("ll_capa");
-
- ll_capa_thread.t_flags = SVC_RUNNING;
- wake_up(&ll_capa_thread.t_ctl_waitq);
-
- while (1) {
- l_wait_event(ll_capa_thread.t_ctl_waitq,
- (ll_capa_check_stop() || have_expired_capa()),
- &lwi);
-
- if (ll_capa_check_stop())
+ struct obd_capa *ocapa, *tmp, *next;
+ struct inode *inode = NULL;
+ struct l_wait_info lwi = { 0 };
+ int rc;
+ ENTRY;
+
+ thread_set_flags(&ll_capa_thread, SVC_RUNNING);
+ wake_up(&ll_capa_thread.t_ctl_waitq);
+
+ while (1) {
+ l_wait_event(ll_capa_thread.t_ctl_waitq,
+ !thread_is_running(&ll_capa_thread) ||
+ have_expired_capa(),
+ &lwi);
+
+ 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) {
+ spin_lock(&capa_lock);
+ 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);
+ 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);
-
- rc = md_renew_capa(ll_i2mdexp(inode), ocapa,
- ll_update_capa);
- spin_lock(&capa_lock);
+ spin_unlock(&capa_lock);
+ rc = md_renew_capa(ll_i2mdexp(inode), ocapa,
+ ll_update_capa);
+ 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) {
+ 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);
- break;
- }
-
- if (atomic_read(&ocapa->c_refc)) {
- DEBUG_CAPA(D_SEC, &ocapa->c_capa,
- "expired(c_refc %d), don't release",
- atomic_read(&ocapa->c_refc));
- /* don't try to renew any more */
- list_del_init(&ocapa->c_list);
- continue;
- }
+ update_capa_timer(ocapa,
+ ocapa->c_expiry);
+ break;
+ }
+
+ if (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));
+ /* don't try to renew any more */
+ list_del_init(&ocapa->c_list);
+ continue;
+ }
/* expired capa is released. */
DEBUG_CAPA(D_SEC, &ocapa->c_capa, "release expired");
ll_delete_capa(ocapa);
}
- spin_unlock(&capa_lock);
- }
+ spin_unlock(&capa_lock);
+ }
- ll_capa_thread.t_flags = SVC_STOPPED;
- wake_up(&ll_capa_thread.t_ctl_waitq);
- RETURN(0);
+ thread_set_flags(&ll_capa_thread, SVC_STOPPED);
+ wake_up(&ll_capa_thread.t_ctl_waitq);
+ RETURN(0);
}
void ll_capa_timer_callback(unsigned long unused)
{
- wake_up(&ll_capa_thread.t_ctl_waitq);
+ wake_up(&ll_capa_thread.t_ctl_waitq);
}
int ll_capa_thread_start(void)
{
- int rc;
- ENTRY;
+ struct task_struct *task;
+ ENTRY;
- init_waitqueue_head(&ll_capa_thread.t_ctl_waitq);
+ init_waitqueue_head(&ll_capa_thread.t_ctl_waitq);
- rc = kernel_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);
+ task = kthread_run(capa_thread_main, NULL, "ll_capa");
+ if (IS_ERR(task)) {
+ CERROR("cannot start expired capa thread: rc %ld\n",
+ PTR_ERR(task));
+ RETURN(PTR_ERR(task));
+ }
+ wait_event(ll_capa_thread.t_ctl_waitq,
+ thread_is_running(&ll_capa_thread));
- RETURN(0);
+ 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);
+ wake_up(&ll_capa_thread.t_ctl_waitq);
+ 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) {
+ spin_lock(&capa_lock);
+ 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;
}
}
capa_get(ocapa);
DEBUG_CAPA(D_SEC, &ocapa->c_capa, "found client");
- } else {
- ocapa = NULL;
-
- if (atomic_read(&ll_capa_debug)) {
- CERROR("no capability for "DFID" opc "LPX64"\n",
- PFID(&lli->lli_fid), opc);
- atomic_set(&ll_capa_debug, 0);
- }
- }
- spin_unlock(&capa_lock);
-
- RETURN(ocapa);
+ } else {
+ ocapa = NULL;
+
+ if (atomic_read(&ll_capa_debug)) {
+ CERROR("no capability for "DFID" opc "LPX64"\n",
+ PFID(&lli->lli_fid), opc);
+ atomic_set(&ll_capa_debug, 0);
+ }
+ }
+ spin_unlock(&capa_lock);
+
+ RETURN(ocapa);
}
EXPORT_SYMBOL(ll_osscapa_get);
struct obd_capa *ll_mdscapa_get(struct inode *inode)
{
- struct ll_inode_info *lli = ll_i2info(inode);
- struct obd_capa *ocapa;
- ENTRY;
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct obd_capa *ocapa;
+ ENTRY;
- LASSERT(inode != NULL);
-
- if ((ll_i2sbi(inode)->ll_flags & LL_SBI_MDS_CAPA) == 0)
- RETURN(NULL);
+ LASSERT(inode != NULL);
- spin_lock(&capa_lock);
- ocapa = capa_get(lli->lli_mds_capa);
- spin_unlock(&capa_lock);
- if (!ocapa && atomic_read(&ll_capa_debug)) {
- CERROR("no mds capability for "DFID"\n", PFID(&lli->lli_fid));
- atomic_set(&ll_capa_debug, 0);
- }
+ if ((ll_i2sbi(inode)->ll_flags & LL_SBI_MDS_CAPA) == 0)
+ RETURN(NULL);
+
+ spin_lock(&capa_lock);
+ ocapa = capa_get(lli->lli_mds_capa);
+ spin_unlock(&capa_lock);
+ if (!ocapa && atomic_read(&ll_capa_debug)) {
+ CERROR("no mds capability for "DFID"\n", PFID(&lli->lli_fid));
+ atomic_set(&ll_capa_debug, 0);
+ }
- RETURN(ocapa);
+ RETURN(ocapa);
}
static struct obd_capa *do_add_mds_capa(struct inode *inode,
DEBUG_CAPA(D_SEC, capa, "add MDS");
} else {
- spin_lock(&old->c_lock);
- old->c_capa = *capa;
- spin_unlock(&old->c_lock);
+ spin_lock(&old->c_lock);
+ old->c_capa = *capa;
+ 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 */
+ 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;
+ struct list_head *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) {
+ 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);
+ 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);
+ 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);
- old->c_capa = *capa;
- spin_unlock(&old->c_lock);
+ spin_lock(&old->c_lock);
+ old->c_capa = *capa;
+ 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);
- ocapa = capa_for_mds(&ocapa->c_capa) ? do_add_mds_capa(inode, ocapa) :
- do_add_oss_capa(inode, ocapa);
+ 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);
- sort_add_capa(ocapa, ll_capa_list);
+ /* truncate capa won't renew */
+ if (ocapa->c_capa.lc_opc != CAPA_OPC_OSS_TRUNC) {
+ set_capa_expiry(ocapa);
+ list_del_init(&ocapa->c_list);
+ sort_add_capa(ocapa, ll_capa_list);
- update_capa_timer(ocapa, capa_renewal_time(ocapa));
- }
+ update_capa_timer(ocapa, capa_renewal_time(ocapa));
+ }
- spin_unlock(&capa_lock);
+ spin_unlock(&capa_lock);
- atomic_set(&ll_capa_debug, 1);
- return ocapa;
+ atomic_set(&ll_capa_debug, 1);
+ return ocapa;
}
static inline void delay_capa_renew(struct obd_capa *oc, cfs_time_t delay)
oc->c_expiry = cfs_time_add(oc->c_expiry, cfs_time_seconds(delay));
}
-int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa)
+static int ll_update_capa(struct obd_capa *ocapa, struct lustre_capa *capa)
{
struct inode *inode = ocapa->u.cli.inode;
int rc = 0;
if (IS_ERR(capa)) {
/* set error code */
rc = PTR_ERR(capa);
- spin_lock(&capa_lock);
+ 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);
+ list_del_init(&ocapa->c_list);
sort_add_capa(ocapa, &ll_idle_capas);
- spin_unlock(&capa_lock);
-
- capa_put(ocapa);
- iput(inode);
- return rc;
- }
-
- spin_lock(&ocapa->c_lock);
- LASSERT(!memcmp(&ocapa->c_capa, capa,
- offsetof(struct lustre_capa, lc_flags)));
- ocapa->c_capa = *capa;
- set_capa_expiry(ocapa);
- spin_unlock(&ocapa->c_lock);
-
- spin_lock(&capa_lock);
- if (capa_for_oss(capa))
- inode_add_oss_capa(inode, ocapa);
- DEBUG_CAPA(D_SEC, capa, "renew");
- EXIT;
+ spin_unlock(&capa_lock);
+
+ capa_put(ocapa);
+ iput(inode);
+ RETURN(rc);
+ }
+
+ spin_lock(&ocapa->c_lock);
+ LASSERT(!memcmp(&ocapa->c_capa, capa,
+ offsetof(struct lustre_capa, lc_opc)));
+ ocapa->c_capa = *capa;
+ set_capa_expiry(ocapa);
+ spin_unlock(&ocapa->c_lock);
+
+ 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);
- sort_add_capa(ocapa, ll_capa_list);
- update_capa_timer(ocapa, capa_renewal_time(ocapa));
- spin_unlock(&capa_lock);
-
- capa_put(ocapa);
- iput(inode);
- return rc;
+ 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);
+
+ capa_put(ocapa);
+ iput(inode);
+ return rc;
}
void ll_capa_open(struct inode *inode)
{
- struct ll_inode_info *lli = ll_i2info(inode);
+ struct ll_inode_info *lli = ll_i2info(inode);
- if ((ll_i2sbi(inode)->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA))
- == 0)
- return;
+ if ((ll_i2sbi(inode)->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA))
+ == 0)
+ return;
- if (!S_ISREG(inode->i_mode))
- return;
+ if (!S_ISREG(inode->i_mode))
+ return;
- atomic_inc(&lli->lli_open_count);
+ atomic_inc(&lli->lli_open_count);
}
void ll_capa_close(struct inode *inode)
{
- struct ll_inode_info *lli = ll_i2info(inode);
+ struct ll_inode_info *lli = ll_i2info(inode);
- if ((ll_i2sbi(inode)->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA))
- == 0)
- return;
+ if ((ll_i2sbi(inode)->ll_flags & (LL_SBI_MDS_CAPA | LL_SBI_OSS_CAPA))
+ == 0)
+ return;
- if (!S_ISREG(inode->i_mode))
- return;
+ if (!S_ISREG(inode->i_mode))
+ return;
- atomic_dec(&lli->lli_open_count);
+ 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)) {
+ spin_lock(&capa_lock);
+ ll_delete_capa(ocapa);
+ 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);
- 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)
- ll_delete_capa(ocapa);
- spin_unlock(&capa_lock);
+ struct ll_inode_info *lli = ll_i2info(inode);
+ struct obd_capa *ocapa, *tmp;
+
+ 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)
+ ll_delete_capa(ocapa);
+ spin_unlock(&capa_lock);
}
void ll_print_capa_stat(struct ll_sb_info *sbi)
git://git.whamcloud.com / fs / lustre-release.git / blobdiff