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Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw

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* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (34 commits)
  [GFS2] Uncomment sprintf_symbol calling code
  [DLM] lowcomms style
  [GFS2] printk warning fixes
  [GFS2] Patch to fix mmap of stuffed files
  [GFS2] use lib/parser for parsing mount options
  [DLM] Lowcomms nodeid range & initialisation fixes
  [DLM] Fix dlm_lowcoms_stop hang
  [DLM] fix mode munging
  [GFS2] lockdump improvements
  [GFS2] Patch to detect corrupt number of dir entries in leaf and/or inode blocks
  [GFS2] bz 236008: Kernel gpf doing cat /debugfs/gfs2/xxx (lock dump)
  [DLM] fs/dlm/ast.c should #include "ast.h"
  [DLM] Consolidate transport protocols
  [DLM] Remove redundant assignment
  [GFS2] Fix bz 234168 (ignoring rgrp flags)
  [DLM] change lkid format
  [DLM] interface for purge (2/2)
  [DLM] add orphan purging code (1/2)
  [DLM] split create_message function
  [GFS2] Set drop_count to 0 (off) by default
  ...
This commit is contained in:
Linus Torvalds
2007-05-07 12:26:27 -07:00
parent 5f757f91e7 37fde8ca6c
commit 5cefcab3db
26 changed files with 2172 additions and 2073 deletions
Download Patch File Download Diff File Expand all files Collapse all files
fs/dlm/Kconfig
+7 -24
View File
@@ -3,36 +3,19 @@ menu "Distributed Lock Manager"
config DLM
tristate "Distributed Lock Manager (DLM)"
depends on SYSFS && (IPV6 || IPV6=n)
depends on IPV6 || IPV6=n
select CONFIGFS_FS
select IP_SCTP if DLM_SCTP
select IP_SCTP
help
A general purpose distributed lock manager for kernel or userspace
applications.
choice
prompt "Select DLM communications protocol"
depends on DLM
default DLM_TCP
help
The DLM Can use TCP or SCTP for it's network communications.
SCTP supports multi-homed operations whereas TCP doesn't.
However, SCTP seems to have stability problems at the moment.
config DLM_TCP
bool "TCP/IP"
config DLM_SCTP
bool "SCTP"
endchoice
A general purpose distributed lock manager for kernel or userspace
applications.
config DLM_DEBUG
bool "DLM debugging"
depends on DLM
help
Under the debugfs mount point, the name of each lockspace will
appear as a file in the "dlm" directory. The output is the
list of resource and locks the local node knows about.
Under the debugfs mount point, the name of each lockspace will
appear as a file in the "dlm" directory. The output is the
list of resource and locks the local node knows about.
endmenu
fs/dlm/Makefile
+2 -4
View File
@@ -8,14 +8,12 @@ dlm-y := ast.o \
member.o \
memory.o \
midcomms.o \
lowcomms.o \
rcom.o \
recover.o \
recoverd.o \
requestqueue.o \
user.o \
util.o
util.o
dlm-$(CONFIG_DLM_DEBUG) += debug_fs.o
dlm-$(CONFIG_DLM_TCP) += lowcomms-tcp.o
dlm-$(CONFIG_DLM_SCTP) += lowcomms-sctp.o
fs/dlm/ast.c
+1
View File
@@ -14,6 +14,7 @@
#include "dlm_internal.h"
#include "lock.h"
#include "user.h"
#include "ast.h"
#define WAKE_ASTS 0
fs/dlm/config.c
+8 -2
View File
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -89,6 +89,7 @@ struct cluster {
unsigned int cl_toss_secs;
unsigned int cl_scan_secs;
unsigned int cl_log_debug;
unsigned int cl_protocol;
};
enum {
@@ -101,6 +102,7 @@ enum {
CLUSTER_ATTR_TOSS_SECS,
CLUSTER_ATTR_SCAN_SECS,
CLUSTER_ATTR_LOG_DEBUG,
CLUSTER_ATTR_PROTOCOL,
};
struct cluster_attribute {
@@ -159,6 +161,7 @@ CLUSTER_ATTR(recover_timer, 1);
CLUSTER_ATTR(toss_secs, 1);
CLUSTER_ATTR(scan_secs, 1);
CLUSTER_ATTR(log_debug, 0);
CLUSTER_ATTR(protocol, 0);
static struct configfs_attribute *cluster_attrs[] = {
[CLUSTER_ATTR_TCP_PORT] = &cluster_attr_tcp_port.attr,
@@ -170,6 +173,7 @@ static struct configfs_attribute *cluster_attrs[] = {
[CLUSTER_ATTR_TOSS_SECS] = &cluster_attr_toss_secs.attr,
[CLUSTER_ATTR_SCAN_SECS] = &cluster_attr_scan_secs.attr,
[CLUSTER_ATTR_LOG_DEBUG] = &cluster_attr_log_debug.attr,
[CLUSTER_ATTR_PROTOCOL] = &cluster_attr_protocol.attr,
NULL,
};
@@ -904,6 +908,7 @@ int dlm_our_addr(struct sockaddr_storage *addr, int num)
#define DEFAULT_TOSS_SECS 10
#define DEFAULT_SCAN_SECS 5
#define DEFAULT_LOG_DEBUG 0
#define DEFAULT_PROTOCOL 0
struct dlm_config_info dlm_config = {
.ci_tcp_port = DEFAULT_TCP_PORT,
@@ -914,6 +919,7 @@ struct dlm_config_info dlm_config = {
.ci_recover_timer = DEFAULT_RECOVER_TIMER,
.ci_toss_secs = DEFAULT_TOSS_SECS,
.ci_scan_secs = DEFAULT_SCAN_SECS,
.ci_log_debug = DEFAULT_LOG_DEBUG
.ci_log_debug = DEFAULT_LOG_DEBUG,
.ci_protocol = DEFAULT_PROTOCOL
};
fs/dlm/config.h
+2 -1
View File
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -26,6 +26,7 @@ struct dlm_config_info {
int ci_toss_secs;
int ci_scan_secs;
int ci_log_debug;
int ci_protocol;
};
extern struct dlm_config_info dlm_config;
fs/dlm/dlm_internal.h
+9 -2
View File
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -210,6 +210,9 @@ struct dlm_args {
#define DLM_IFL_MSTCPY 0x00010000
#define DLM_IFL_RESEND 0x00020000
#define DLM_IFL_DEAD 0x00040000
#define DLM_IFL_OVERLAP_UNLOCK 0x00080000
#define DLM_IFL_OVERLAP_CANCEL 0x00100000
#define DLM_IFL_ENDOFLIFE 0x00200000
#define DLM_IFL_USER 0x00000001
#define DLM_IFL_ORPHAN 0x00000002
@@ -230,8 +233,8 @@ struct dlm_lkb {
int8_t lkb_grmode; /* granted lock mode */
int8_t lkb_bastmode; /* requested mode */
int8_t lkb_highbast; /* highest mode bast sent for */
int8_t lkb_wait_type; /* type of reply waiting for */
int8_t lkb_wait_count;
int8_t lkb_ast_type; /* type of ast queued for */
struct list_head lkb_idtbl_list; /* lockspace lkbtbl */
@@ -339,6 +342,7 @@ struct dlm_header {
#define DLM_MSG_LOOKUP 11
#define DLM_MSG_REMOVE 12
#define DLM_MSG_LOOKUP_REPLY 13
#define DLM_MSG_PURGE 14
struct dlm_message {
struct dlm_header m_header;
@@ -440,6 +444,9 @@ struct dlm_ls {
struct mutex ls_waiters_mutex;
struct list_head ls_waiters; /* lkbs needing a reply */
struct mutex ls_orphans_mutex;
struct list_head ls_orphans;
struct list_head ls_nodes; /* current nodes in ls */
struct list_head ls_nodes_gone; /* dead node list, recovery */
int ls_num_nodes; /* number of nodes in ls */
fs/dlm/lock.c
+741 -218
View File
File diff suppressed because it is too large Load Diff
fs/dlm/lock.h
+2
View File
@@ -41,6 +41,8 @@ int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
uint32_t flags, uint32_t lkid, char *lvb_in);
int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
uint32_t flags, uint32_t lkid);
int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
int nodeid, int pid);
void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
static inline int is_master(struct dlm_rsb *r)
fs/dlm/lockspace.c
+3 -1
View File
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
** Copyright (C) 2004-2007 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -459,6 +459,8 @@ static int new_lockspace(char *name, int namelen, void **lockspace,
INIT_LIST_HEAD(&ls->ls_waiters);
mutex_init(&ls->ls_waiters_mutex);
INIT_LIST_HEAD(&ls->ls_orphans);
mutex_init(&ls->ls_orphans_mutex);
INIT_LIST_HEAD(&ls->ls_nodes);
INIT_LIST_HEAD(&ls->ls_nodes_gone);
fs/dlm/lowcomms-sctp.c
-1210
View File
File diff suppressed because it is too large Load Diff
fs/dlm/lowcomms-tcp.c → fs/dlm/lowcomms.c
+638 -170
View File
File diff suppressed because it is too large Load Diff
fs/dlm/user.c
+106 -55
View File
@@ -1,5 +1,5 @@
/*
* Copyright (C) 2006 Red Hat, Inc. All rights reserved.
* Copyright (C) 2006-2007 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
@@ -56,6 +56,7 @@ struct dlm_write_request32 {
union {
struct dlm_lock_params32 lock;
struct dlm_lspace_params lspace;
struct dlm_purge_params purge;
} i;
};
@@ -92,6 +93,9 @@ static void compat_input(struct dlm_write_request *kb,
kb->i.lspace.flags = kb32->i.lspace.flags;
kb->i.lspace.minor = kb32->i.lspace.minor;
strcpy(kb->i.lspace.name, kb32->i.lspace.name);
} else if (kb->cmd == DLM_USER_PURGE) {
kb->i.purge.nodeid = kb32->i.purge.nodeid;
kb->i.purge.pid = kb32->i.purge.pid;
} else {
kb->i.lock.mode = kb32->i.lock.mode;
kb->i.lock.namelen = kb32->i.lock.namelen;
@@ -111,8 +115,6 @@ static void compat_input(struct dlm_write_request *kb,
static void compat_output(struct dlm_lock_result *res,
struct dlm_lock_result32 *res32)
{
res32->length = res->length - (sizeof(struct dlm_lock_result) -
sizeof(struct dlm_lock_result32));
res32->user_astaddr = (__u32)(long)res->user_astaddr;
res32->user_astparam = (__u32)(long)res->user_astparam;
res32->user_lksb = (__u32)(long)res->user_lksb;
@@ -128,35 +130,30 @@ static void compat_output(struct dlm_lock_result *res,
}
#endif
/* we could possibly check if the cancel of an orphan has resulted in the lkb
being removed and then remove that lkb from the orphans list and free it */
void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
{
struct dlm_ls *ls;
struct dlm_user_args *ua;
struct dlm_user_proc *proc;
int remove_ownqueue = 0;
int eol = 0, ast_type;
/* dlm_clear_proc_locks() sets ORPHAN/DEAD flag on each
lkb before dealing with it. We need to check this
flag before taking ls_clear_proc_locks mutex because if
it's set, dlm_clear_proc_locks() holds the mutex. */
if (lkb->lkb_flags & (DLM_IFL_ORPHAN | DLM_IFL_DEAD)) {
/* log_print("user_add_ast skip1 %x", lkb->lkb_flags); */
if (lkb->lkb_flags & (DLM_IFL_ORPHAN | DLM_IFL_DEAD))
return;
}
ls = lkb->lkb_resource->res_ls;
mutex_lock(&ls->ls_clear_proc_locks);
/* If ORPHAN/DEAD flag is set, it means the process is dead so an ast
can't be delivered. For ORPHAN's, dlm_clear_proc_locks() freed
lkb->ua so we can't try to use it. */
lkb->ua so we can't try to use it. This second check is necessary
for cases where a completion ast is received for an operation that
began before clear_proc_locks did its cancel/unlock. */
if (lkb->lkb_flags & (DLM_IFL_ORPHAN | DLM_IFL_DEAD)) {
/* log_print("user_add_ast skip2 %x", lkb->lkb_flags); */
if (lkb->lkb_flags & (DLM_IFL_ORPHAN | DLM_IFL_DEAD))
goto out;
}
DLM_ASSERT(lkb->lkb_astparam, dlm_print_lkb(lkb););
ua = (struct dlm_user_args *)lkb->lkb_astparam;
@@ -166,28 +163,42 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
goto out;
spin_lock(&proc->asts_spin);
if (!(lkb->lkb_ast_type & (AST_COMP | AST_BAST))) {
ast_type = lkb->lkb_ast_type;
lkb->lkb_ast_type |= type;
if (!ast_type) {
kref_get(&lkb->lkb_ref);
list_add_tail(&lkb->lkb_astqueue, &proc->asts);
lkb->lkb_ast_type |= type;
wake_up_interruptible(&proc->wait);
}
if (type == AST_COMP && (ast_type & AST_COMP))
log_debug(ls, "ast overlap %x status %x %x",
lkb->lkb_id, ua->lksb.sb_status, lkb->lkb_flags);
/* noqueue requests that fail may need to be removed from the
proc's locks list, there should be a better way of detecting
this situation than checking all these things... */
/* Figure out if this lock is at the end of its life and no longer
available for the application to use. The lkb still exists until
the final ast is read. A lock becomes EOL in three situations:
1. a noqueue request fails with EAGAIN
2. an unlock completes with EUNLOCK
3. a cancel of a waiting request completes with ECANCEL
An EOL lock needs to be removed from the process's list of locks.
And we can't allow any new operation on an EOL lock. This is
not related to the lifetime of the lkb struct which is managed
entirely by refcount. */
if (type == AST_COMP && lkb->lkb_grmode == DLM_LOCK_IV &&
ua->lksb.sb_status == -EAGAIN && !list_empty(&lkb->lkb_ownqueue))
remove_ownqueue = 1;
/* unlocks or cancels of waiting requests need to be removed from the
proc's unlocking list, again there must be a better way... */
if (ua->lksb.sb_status == -DLM_EUNLOCK ||
if (type == AST_COMP &&
lkb->lkb_grmode == DLM_LOCK_IV &&
ua->lksb.sb_status == -EAGAIN)
eol = 1;
else if (ua->lksb.sb_status == -DLM_EUNLOCK ||
(ua->lksb.sb_status == -DLM_ECANCEL &&
lkb->lkb_grmode == DLM_LOCK_IV))
remove_ownqueue = 1;
eol = 1;
if (eol) {
lkb->lkb_ast_type &= ~AST_BAST;
lkb->lkb_flags |= DLM_IFL_ENDOFLIFE;
}
/* We want to copy the lvb to userspace when the completion
ast is read if the status is 0, the lock has an lvb and
@@ -204,11 +215,13 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
spin_unlock(&proc->asts_spin);
if (remove_ownqueue) {
if (eol) {
spin_lock(&ua->proc->locks_spin);
list_del_init(&lkb->lkb_ownqueue);
if (!list_empty(&lkb->lkb_ownqueue)) {
list_del_init(&lkb->lkb_ownqueue);
dlm_put_lkb(lkb);
}
spin_unlock(&ua->proc->locks_spin);
dlm_put_lkb(lkb);
}
out:
mutex_unlock(&ls->ls_clear_proc_locks);
@@ -286,11 +299,50 @@ static int device_user_unlock(struct dlm_user_proc *proc,
return error;
}
static int create_misc_device(struct dlm_ls *ls, char *name)
{
int error, len;
error = -ENOMEM;
len = strlen(name) + strlen(name_prefix) + 2;
ls->ls_device.name = kzalloc(len, GFP_KERNEL);
if (!ls->ls_device.name)
goto fail;
snprintf((char *)ls->ls_device.name, len, "%s_%s", name_prefix,
name);
ls->ls_device.fops = &device_fops;
ls->ls_device.minor = MISC_DYNAMIC_MINOR;
error = misc_register(&ls->ls_device);
if (error) {
kfree(ls->ls_device.name);
}
fail:
return error;
}
static int device_user_purge(struct dlm_user_proc *proc,
struct dlm_purge_params *params)
{
struct dlm_ls *ls;
int error;
ls = dlm_find_lockspace_local(proc->lockspace);
if (!ls)
return -ENOENT;
error = dlm_user_purge(ls, proc, params->nodeid, params->pid);
dlm_put_lockspace(ls);
return error;
}
static int device_create_lockspace(struct dlm_lspace_params *params)
{
dlm_lockspace_t *lockspace;
struct dlm_ls *ls;
int error, len;
int error;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -304,29 +356,14 @@ static int device_create_lockspace(struct dlm_lspace_params *params)
if (!ls)
return -ENOENT;
error = -ENOMEM;
len = strlen(params->name) + strlen(name_prefix) + 2;
ls->ls_device.name = kzalloc(len, GFP_KERNEL);
if (!ls->ls_device.name)
goto fail;
snprintf((char *)ls->ls_device.name, len, "%s_%s", name_prefix,
params->name);
ls->ls_device.fops = &device_fops;
ls->ls_device.minor = MISC_DYNAMIC_MINOR;
error = misc_register(&ls->ls_device);
if (error) {
kfree(ls->ls_device.name);
goto fail;
}
error = ls->ls_device.minor;
error = create_misc_device(ls, params->name);
dlm_put_lockspace(ls);
return error;
fail:
dlm_put_lockspace(ls);
dlm_release_lockspace(lockspace, 0);
if (error)
dlm_release_lockspace(lockspace, 0);
else
error = ls->ls_device.minor;
return error;
}
@@ -343,6 +380,10 @@ static int device_remove_lockspace(struct dlm_lspace_params *params)
if (!ls)
return -ENOENT;
/* Deregister the misc device first, so we don't have
* a device that's not attached to a lockspace. If
* dlm_release_lockspace fails then we can recreate it
*/
error = misc_deregister(&ls->ls_device);
if (error) {
dlm_put_lockspace(ls);
@@ -361,6 +402,8 @@ static int device_remove_lockspace(struct dlm_lspace_params *params)
dlm_put_lockspace(ls);
error = dlm_release_lockspace(lockspace, force);
if (error)
create_misc_device(ls, ls->ls_name);
out:
return error;
}
@@ -497,6 +540,14 @@ static ssize_t device_write(struct file *file, const char __user *buf,
error = device_remove_lockspace(&kbuf->i.lspace);
break;
case DLM_USER_PURGE:
if (!proc) {
log_print("no locking on control device");
goto out_sig;
}
error = device_user_purge(proc, &kbuf->i.purge);
break;
default:
log_print("Unknown command passed to DLM device : %d\n",
kbuf->cmd);