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-rw-r--r--fs/dlm/Makefile1
-rw-r--r--fs/dlm/dlm_internal.h2
-rw-r--r--fs/dlm/main.c7
-rw-r--r--fs/dlm/plock.c (renamed from fs/gfs2/locking/dlm/plock.c)169
-rw-r--r--fs/gfs2/locking/dlm/Makefile2
-rw-r--r--fs/gfs2/locking/dlm/lock_dlm.h12
-rw-r--r--fs/gfs2/locking/dlm/main.c8
-rw-r--r--fs/gfs2/locking/dlm/mount.c21
-rw-r--r--include/linux/Kbuild2
-rw-r--r--include/linux/dlm_plock.h50
-rw-r--r--include/linux/lock_dlm_plock.h41
11 files changed, 185 insertions, 130 deletions
diff --git a/fs/dlm/Makefile b/fs/dlm/Makefile
index d248e60..ca1c912 100644
--- a/fs/dlm/Makefile
+++ b/fs/dlm/Makefile
@@ -10,6 +10,7 @@ dlm-y := ast.o \
midcomms.o \
netlink.o \
lowcomms.o \
+ plock.o \
rcom.o \
recover.o \
recoverd.o \
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index c70c8e5..caa1581 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -582,6 +582,8 @@ static inline int dlm_no_directory(struct dlm_ls *ls)
int dlm_netlink_init(void);
void dlm_netlink_exit(void);
void dlm_timeout_warn(struct dlm_lkb *lkb);
+int dlm_plock_init(void);
+void dlm_plock_exit(void);
#ifdef CONFIG_DLM_DEBUG
int dlm_register_debugfs(void);
diff --git a/fs/dlm/main.c b/fs/dlm/main.c
index 58487fb..b80e0aa 100644
--- a/fs/dlm/main.c
+++ b/fs/dlm/main.c
@@ -46,10 +46,16 @@ static int __init init_dlm(void)
if (error)
goto out_user;
+ error = dlm_plock_init();
+ if (error)
+ goto out_netlink;
+
printk("DLM (built %s %s) installed\n", __DATE__, __TIME__);
return 0;
+ out_netlink:
+ dlm_netlink_exit();
out_user:
dlm_user_exit();
out_debug:
@@ -66,6 +72,7 @@ static int __init init_dlm(void)
static void __exit exit_dlm(void)
{
+ dlm_plock_exit();
dlm_netlink_exit();
dlm_user_exit();
dlm_config_exit();
diff --git a/fs/gfs2/locking/dlm/plock.c b/fs/dlm/plock.c
index 2ebd374..d6d6e37 100644
--- a/fs/gfs2/locking/dlm/plock.c
+++ b/fs/dlm/plock.c
@@ -1,17 +1,19 @@
/*
- * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2005-2008 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
* of the GNU General Public License version 2.
*/
+#include <linux/fs.h>
#include <linux/miscdevice.h>
-#include <linux/lock_dlm_plock.h>
#include <linux/poll.h>
+#include <linux/dlm.h>
+#include <linux/dlm_plock.h>
-#include "lock_dlm.h"
-
+#include "dlm_internal.h"
+#include "lockspace.h"
static spinlock_t ops_lock;
static struct list_head send_list;
@@ -22,7 +24,7 @@ static wait_queue_head_t recv_wq;
struct plock_op {
struct list_head list;
int done;
- struct gdlm_plock_info info;
+ struct dlm_plock_info info;
};
struct plock_xop {
@@ -34,22 +36,22 @@ struct plock_xop {
};
-static inline void set_version(struct gdlm_plock_info *info)
+static inline void set_version(struct dlm_plock_info *info)
{
- info->version[0] = GDLM_PLOCK_VERSION_MAJOR;
- info->version[1] = GDLM_PLOCK_VERSION_MINOR;
- info->version[2] = GDLM_PLOCK_VERSION_PATCH;
+ info->version[0] = DLM_PLOCK_VERSION_MAJOR;
+ info->version[1] = DLM_PLOCK_VERSION_MINOR;
+ info->version[2] = DLM_PLOCK_VERSION_PATCH;
}
-static int check_version(struct gdlm_plock_info *info)
+static int check_version(struct dlm_plock_info *info)
{
- if ((GDLM_PLOCK_VERSION_MAJOR != info->version[0]) ||
- (GDLM_PLOCK_VERSION_MINOR < info->version[1])) {
- log_error("plock device version mismatch: "
+ if ((DLM_PLOCK_VERSION_MAJOR != info->version[0]) ||
+ (DLM_PLOCK_VERSION_MINOR < info->version[1])) {
+ log_print("plock device version mismatch: "
"kernel (%u.%u.%u), user (%u.%u.%u)",
- GDLM_PLOCK_VERSION_MAJOR,
- GDLM_PLOCK_VERSION_MINOR,
- GDLM_PLOCK_VERSION_PATCH,
+ DLM_PLOCK_VERSION_MAJOR,
+ DLM_PLOCK_VERSION_MINOR,
+ DLM_PLOCK_VERSION_PATCH,
info->version[0],
info->version[1],
info->version[2]);
@@ -68,25 +70,31 @@ static void send_op(struct plock_op *op)
wake_up(&send_wq);
}
-int gdlm_plock(void *lockspace, struct lm_lockname *name,
- struct file *file, int cmd, struct file_lock *fl)
+int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+ int cmd, struct file_lock *fl)
{
- struct gdlm_ls *ls = lockspace;
+ struct dlm_ls *ls;
struct plock_op *op;
struct plock_xop *xop;
int rv;
+ ls = dlm_find_lockspace_local(lockspace);
+ if (!ls)
+ return -EINVAL;
+
xop = kzalloc(sizeof(*xop), GFP_KERNEL);
- if (!xop)
- return -ENOMEM;
+ if (!xop) {
+ rv = -ENOMEM;
+ goto out;
+ }
op = &xop->xop;
- op->info.optype = GDLM_PLOCK_OP_LOCK;
+ op->info.optype = DLM_PLOCK_OP_LOCK;
op->info.pid = fl->fl_pid;
op->info.ex = (fl->fl_type == F_WRLCK);
op->info.wait = IS_SETLKW(cmd);
- op->info.fsid = ls->id;
- op->info.number = name->ln_number;
+ op->info.fsid = ls->ls_global_id;
+ op->info.number = number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
if (fl->fl_lmops && fl->fl_lmops->fl_grant) {
@@ -107,12 +115,15 @@ int gdlm_plock(void *lockspace, struct lm_lockname *name,
if (xop->callback == NULL)
wait_event(recv_wq, (op->done != 0));
- else
- return -EINPROGRESS;
+ else {
+ rv = -EINPROGRESS;
+ goto out;
+ }
spin_lock(&ops_lock);
if (!list_empty(&op->list)) {
- printk(KERN_INFO "plock op on list\n");
+ log_error(ls, "dlm_posix_lock: op on list %llx",
+ (unsigned long long)number);
list_del(&op->list);
}
spin_unlock(&ops_lock);
@@ -121,17 +132,19 @@ int gdlm_plock(void *lockspace, struct lm_lockname *name,
if (!rv) {
if (posix_lock_file_wait(file, fl) < 0)
- log_error("gdlm_plock: vfs lock error %x,%llx",
- name->ln_type,
- (unsigned long long)name->ln_number);
+ log_error(ls, "dlm_posix_lock: vfs lock error %llx",
+ (unsigned long long)number);
}
kfree(xop);
+out:
+ dlm_put_lockspace(ls);
return rv;
}
+EXPORT_SYMBOL_GPL(dlm_posix_lock);
/* Returns failure iff a succesful lock operation should be canceled */
-static int gdlm_plock_callback(struct plock_op *op)
+static int dlm_plock_callback(struct plock_op *op)
{
struct file *file;
struct file_lock *fl;
@@ -142,7 +155,8 @@ static int gdlm_plock_callback(struct plock_op *op)
spin_lock(&ops_lock);
if (!list_empty(&op->list)) {
- printk(KERN_INFO "plock op on list\n");
+ log_print("dlm_plock_callback: op on list %llx",
+ (unsigned long long)op->info.number);
list_del(&op->list);
}
spin_unlock(&ops_lock);
@@ -165,19 +179,19 @@ static int gdlm_plock_callback(struct plock_op *op)
* This can only happen in the case of kmalloc() failure.
* The filesystem's own lock is the authoritative lock,
* so a failure to get the lock locally is not a disaster.
- * As long as GFS cannot reliably cancel locks (especially
+ * As long as the fs cannot reliably cancel locks (especially
* in a low-memory situation), we're better off ignoring
* this failure than trying to recover.
*/
- log_error("gdlm_plock: vfs lock error file %p fl %p",
- file, fl);
+ log_print("dlm_plock_callback: vfs lock error %llx file %p fl %p",
+ (unsigned long long)op->info.number, file, fl);
}
rv = notify(flc, NULL, 0);
if (rv) {
/* XXX: We need to cancel the fs lock here: */
- printk("gfs2 lock granted after lock request failed;"
- " dangling lock!\n");
+ log_print("dlm_plock_callback: lock granted after lock request "
+ "failed; dangling lock!\n");
goto out;
}
@@ -186,25 +200,31 @@ out:
return rv;
}
-int gdlm_punlock(void *lockspace, struct lm_lockname *name,
- struct file *file, struct file_lock *fl)
+int dlm_posix_unlock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+ struct file_lock *fl)
{
- struct gdlm_ls *ls = lockspace;
+ struct dlm_ls *ls;
struct plock_op *op;
int rv;
+ ls = dlm_find_lockspace_local(lockspace);
+ if (!ls)
+ return -EINVAL;
+
op = kzalloc(sizeof(*op), GFP_KERNEL);
- if (!op)
- return -ENOMEM;
+ if (!op) {
+ rv = -ENOMEM;
+ goto out;
+ }
if (posix_lock_file_wait(file, fl) < 0)
- log_error("gdlm_punlock: vfs unlock error %x,%llx",
- name->ln_type, (unsigned long long)name->ln_number);
+ log_error(ls, "dlm_posix_unlock: vfs unlock error %llx",
+ (unsigned long long)number);
- op->info.optype = GDLM_PLOCK_OP_UNLOCK;
+ op->info.optype = DLM_PLOCK_OP_UNLOCK;
op->info.pid = fl->fl_pid;
- op->info.fsid = ls->id;
- op->info.number = name->ln_number;
+ op->info.fsid = ls->ls_global_id;
+ op->info.number = number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
if (fl->fl_lmops && fl->fl_lmops->fl_grant)
@@ -217,7 +237,8 @@ int gdlm_punlock(void *lockspace, struct lm_lockname *name,
spin_lock(&ops_lock);
if (!list_empty(&op->list)) {
- printk(KERN_INFO "punlock op on list\n");
+ log_error(ls, "dlm_posix_unlock: op on list %llx",
+ (unsigned long long)number);
list_del(&op->list);
}
spin_unlock(&ops_lock);
@@ -228,25 +249,34 @@ int gdlm_punlock(void *lockspace, struct lm_lockname *name,
rv = 0;
kfree(op);
+out:
+ dlm_put_lockspace(ls);
return rv;
}
+EXPORT_SYMBOL_GPL(dlm_posix_unlock);
-int gdlm_plock_get(void *lockspace, struct lm_lockname *name,
- struct file *file, struct file_lock *fl)
+int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+ struct file_lock *fl)
{
- struct gdlm_ls *ls = lockspace;
+ struct dlm_ls *ls;
struct plock_op *op;
int rv;
+ ls = dlm_find_lockspace_local(lockspace);
+ if (!ls)
+ return -EINVAL;
+
op = kzalloc(sizeof(*op), GFP_KERNEL);
- if (!op)
- return -ENOMEM;
+ if (!op) {
+ rv = -ENOMEM;
+ goto out;
+ }
- op->info.optype = GDLM_PLOCK_OP_GET;
+ op->info.optype = DLM_PLOCK_OP_GET;
op->info.pid = fl->fl_pid;
op->info.ex = (fl->fl_type == F_WRLCK);
- op->info.fsid = ls->id;
- op->info.number = name->ln_number;
+ op->info.fsid = ls->ls_global_id;
+ op->info.number = number;
op->info.start = fl->fl_start;
op->info.end = fl->fl_end;
if (fl->fl_lmops && fl->fl_lmops->fl_grant)
@@ -259,7 +289,8 @@ int gdlm_plock_get(void *lockspace, struct lm_lockname *name,
spin_lock(&ops_lock);
if (!list_empty(&op->list)) {
- printk(KERN_INFO "plock_get op on list\n");
+ log_error(ls, "dlm_posix_get: op on list %llx",
+ (unsigned long long)number);
list_del(&op->list);
}
spin_unlock(&ops_lock);
@@ -281,14 +312,17 @@ int gdlm_plock_get(void *lockspace, struct lm_lockname *name,
}
kfree(op);
+out:
+ dlm_put_lockspace(ls);
return rv;
}
+EXPORT_SYMBOL_GPL(dlm_posix_get);
/* a read copies out one plock request from the send list */
static ssize_t dev_read(struct file *file, char __user *u, size_t count,
loff_t *ppos)
{
- struct gdlm_plock_info info;
+ struct dlm_plock_info info;
struct plock_op *op = NULL;
if (count < sizeof(info))
@@ -315,7 +349,7 @@ static ssize_t dev_read(struct file *file, char __user *u, size_t count,
static ssize_t dev_write(struct file *file, const char __user *u, size_t count,
loff_t *ppos)
{
- struct gdlm_plock_info info;
+ struct dlm_plock_info info;
struct plock_op *op;
int found = 0;
@@ -345,12 +379,12 @@ static ssize_t dev_write(struct file *file, const char __user *u, size_t count,
struct plock_xop *xop;
xop = (struct plock_xop *)op;
if (xop->callback)
- count = gdlm_plock_callback(op);
+ count = dlm_plock_callback(op);
else
wake_up(&recv_wq);
} else
- printk(KERN_INFO "gdlm dev_write no op %x %llx\n", info.fsid,
- (unsigned long long)info.number);
+ log_print("dev_write no op %x %llx", info.fsid,
+ (unsigned long long)info.number);
return count;
}
@@ -377,11 +411,11 @@ static const struct file_operations dev_fops = {
static struct miscdevice plock_dev_misc = {
.minor = MISC_DYNAMIC_MINOR,
- .name = GDLM_PLOCK_MISC_NAME,
+ .name = DLM_PLOCK_MISC_NAME,
.fops = &dev_fops
};
-int gdlm_plock_init(void)
+int dlm_plock_init(void)
{
int rv;
@@ -393,14 +427,13 @@ int gdlm_plock_init(void)
rv = misc_register(&plock_dev_misc);
if (rv)
- printk(KERN_INFO "gdlm_plock_init: misc_register failed %d",
- rv);
+ log_print("dlm_plock_init: misc_register failed %d", rv);
return rv;
}
-void gdlm_plock_exit(void)
+void dlm_plock_exit(void)
{
if (misc_deregister(&plock_dev_misc) < 0)
- printk(KERN_INFO "gdlm_plock_exit: misc_deregister failed");
+ log_print("dlm_plock_exit: misc_deregister failed");
}
diff --git a/fs/gfs2/locking/dlm/Makefile b/fs/gfs2/locking/dlm/Makefile
index 89b93b6b..2609bb6 100644
--- a/fs/gfs2/locking/dlm/Makefile
+++ b/fs/gfs2/locking/dlm/Makefile
@@ -1,3 +1,3 @@
obj-$(CONFIG_GFS2_FS_LOCKING_DLM) += lock_dlm.o
-lock_dlm-y := lock.o main.o mount.o sysfs.o thread.o plock.o
+lock_dlm-y := lock.o main.o mount.o sysfs.o thread.o
diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
index 58fcf8c..a243cf6 100644
--- a/fs/gfs2/locking/dlm/lock_dlm.h
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -25,6 +25,7 @@
#include <net/sock.h>
#include <linux/dlm.h>
+#include <linux/dlm_plock.h>
#include <linux/lm_interface.h>
/*
@@ -173,17 +174,6 @@ void gdlm_cancel(void *);
int gdlm_hold_lvb(void *, char **);
void gdlm_unhold_lvb(void *, char *);
-/* plock.c */
-
-int gdlm_plock_init(void);
-void gdlm_plock_exit(void);
-int gdlm_plock(void *, struct lm_lockname *, struct file *, int,
- struct file_lock *);
-int gdlm_plock_get(void *, struct lm_lockname *, struct file *,
- struct file_lock *);
-int gdlm_punlock(void *, struct lm_lockname *, struct file *,
- struct file_lock *);
-
/* mount.c */
extern const struct lm_lockops gdlm_ops;
diff --git a/fs/gfs2/locking/dlm/main.c b/fs/gfs2/locking/dlm/main.c
index 36a2258..b9a03a7 100644
--- a/fs/gfs2/locking/dlm/main.c
+++ b/fs/gfs2/locking/dlm/main.c
@@ -28,13 +28,6 @@ static int __init init_lock_dlm(void)
return error;
}
- error = gdlm_plock_init();
- if (error) {
- gdlm_sysfs_exit();
- gfs2_unregister_lockproto(&gdlm_ops);
- return error;
- }
-
printk(KERN_INFO
"Lock_DLM (built %s %s) installed\n", __DATE__, __TIME__);
return 0;
@@ -42,7 +35,6 @@ static int __init init_lock_dlm(void)
static void __exit exit_lock_dlm(void)
{
- gdlm_plock_exit();
gdlm_sysfs_exit();
gfs2_unregister_lockproto(&gdlm_ops);
}
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index f2efff4..470bdf6 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -236,6 +236,27 @@ static void gdlm_withdraw(void *lockspace)
gdlm_kobject_release(ls);
}
+static int gdlm_plock(void *lockspace, struct lm_lockname *name,
+ struct file *file, int cmd, struct file_lock *fl)
+{
+ struct gdlm_ls *ls = lockspace;
+ return dlm_posix_lock(ls->dlm_lockspace, name->ln_number, file, cmd, fl);
+}
+
+static int gdlm_punlock(void *lockspace, struct lm_lockname *name,
+ struct file *file, struct file_lock *fl)
+{
+ struct gdlm_ls *ls = lockspace;
+ return dlm_posix_unlock(ls->dlm_lockspace, name->ln_number, file, fl);
+}
+
+static int gdlm_plock_get(void *lockspace, struct lm_lockname *name,
+ struct file *file, struct file_lock *fl)
+{
+ struct gdlm_ls *ls = lockspace;
+ return dlm_posix_get(ls->dlm_lockspace, name->ln_number, file, fl);
+}
+
const struct lm_lockops gdlm_ops = {
.lm_proto_name = "lock_dlm",
.lm_mount = gdlm_mount,
diff --git a/include/linux/Kbuild b/include/linux/Kbuild
index b3d9ccd..376fc97 100644
--- a/include/linux/Kbuild
+++ b/include/linux/Kbuild
@@ -100,7 +100,7 @@ header-y += ixjuser.h
header-y += jffs2.h
header-y += keyctl.h
header-y += limits.h
-header-y += lock_dlm_plock.h
+header-y += dlm_plock.h
header-y += magic.h
header-y += major.h
header-y += matroxfb.h
diff --git a/include/linux/dlm_plock.h b/include/linux/dlm_plock.h
new file mode 100644
index 0000000..18d5fdb
--- /dev/null
+++ b/include/linux/dlm_plock.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2005-2008 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
+ * of the GNU General Public License v.2.
+ */
+
+#ifndef __DLM_PLOCK_DOT_H__
+#define __DLM_PLOCK_DOT_H__
+
+#define DLM_PLOCK_MISC_NAME "dlm_plock"
+
+#define DLM_PLOCK_VERSION_MAJOR 1
+#define DLM_PLOCK_VERSION_MINOR 1
+#define DLM_PLOCK_VERSION_PATCH 0
+
+enum {
+ DLM_PLOCK_OP_LOCK = 1,
+ DLM_PLOCK_OP_UNLOCK,
+ DLM_PLOCK_OP_GET,
+};
+
+struct dlm_plock_info {
+ __u32 version[3];
+ __u8 optype;
+ __u8 ex;
+ __u8 wait;
+ __u8 pad;
+ __u32 pid;
+ __s32 nodeid;
+ __s32 rv;
+ __u32 fsid;
+ __u64 number;
+ __u64 start;
+ __u64 end;
+ __u64 owner;
+};
+
+#ifdef __KERNEL__
+int dlm_posix_lock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+ int cmd, struct file_lock *fl);
+int dlm_posix_unlock(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+ struct file_lock *fl);
+int dlm_posix_get(dlm_lockspace_t *lockspace, u64 number, struct file *file,
+ struct file_lock *fl);
+#endif /* __KERNEL__ */
+
+#endif
+
diff --git a/include/linux/lock_dlm_plock.h b/include/linux/lock_dlm_plock.h
deleted file mode 100644
index fc34151..0000000
--- a/include/linux/lock_dlm_plock.h
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (C) 2005 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
- * of the GNU General Public License v.2.
- */
-
-#ifndef __LOCK_DLM_PLOCK_DOT_H__
-#define __LOCK_DLM_PLOCK_DOT_H__
-
-#define GDLM_PLOCK_MISC_NAME "lock_dlm_plock"
-
-#define GDLM_PLOCK_VERSION_MAJOR 1
-#define GDLM_PLOCK_VERSION_MINOR 1
-#define GDLM_PLOCK_VERSION_PATCH 0
-
-enum {
- GDLM_PLOCK_OP_LOCK = 1,
- GDLM_PLOCK_OP_UNLOCK,
- GDLM_PLOCK_OP_GET,
-};
-
-struct gdlm_plock_info {
- __u32 version[3];
- __u8 optype;
- __u8 ex;
- __u8 wait;
- __u8 pad;
- __u32 pid;
- __s32 nodeid;
- __s32 rv;
- __u32 fsid;
- __u64 number;
- __u64 start;
- __u64 end;
- __u64 owner;
-};
-
-#endif
-
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