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Date: Thu, 7 Feb 2008 00:09:18 -0600
From: David Teigland <teigland@...hat.com>
To: linux-kernel@...r.kernel.org
Subject: [PATCH 15/16] dlm: eliminate astparam type casting
Put lkb_astparam in a union with a dlm_user_args pointer to
eliminate a lot of type casting.
Signed-off-by: David Teigland <teigland@...hat.com>
---
fs/dlm/debug_fs.c | 6 ++----
fs/dlm/dlm_internal.h | 5 ++++-
fs/dlm/lock.c | 14 ++++++--------
fs/dlm/memory.c | 2 +-
fs/dlm/netlink.c | 5 ++---
fs/dlm/user.c | 8 +++-----
6 files changed, 18 insertions(+), 22 deletions(-)
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index 12c3bfd..52b1196 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -162,14 +162,12 @@ static int print_resource(struct dlm_rsb *res, struct seq_file *s)
static void print_lock(struct seq_file *s, struct dlm_lkb *lkb, struct dlm_rsb *r)
{
- struct dlm_user_args *ua;
unsigned int waiting = 0;
uint64_t xid = 0;
if (lkb->lkb_flags & DLM_IFL_USER) {
- ua = (struct dlm_user_args *) lkb->lkb_astparam;
- if (ua)
- xid = ua->xid;
+ if (lkb->lkb_ua)
+ xid = lkb->lkb_ua->xid;
}
if (lkb->lkb_timestamp)
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index a53c237..d30ea8b 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -253,7 +253,10 @@ struct dlm_lkb {
struct dlm_lksb *lkb_lksb; /* caller's status block */
void (*lkb_astfn) (void *astparam);
void (*lkb_bastfn) (void *astparam, int mode);
- void *lkb_astparam; /* caller's ast arg */
+ union {
+ void *lkb_astparam; /* caller's ast arg */
+ struct dlm_user_args *lkb_ua;
+ };
};
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 94f8cbd..8f250ac 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -4533,7 +4533,7 @@ int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
/* user can change the params on its lock when it converts it, or
add an lvb that didn't exist before */
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (flags & DLM_LKF_VALBLK && !ua->lksb.sb_lvbptr) {
ua->lksb.sb_lvbptr = kzalloc(DLM_USER_LVB_LEN, GFP_KERNEL);
@@ -4584,7 +4584,7 @@ int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
if (error)
goto out;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (lvb_in && ua->lksb.sb_lvbptr)
memcpy(ua->lksb.sb_lvbptr, lvb_in, DLM_USER_LVB_LEN);
@@ -4633,7 +4633,7 @@ int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
if (error)
goto out;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (ua_tmp->castparam)
ua->castparam = ua_tmp->castparam;
ua->user_lksb = ua_tmp->user_lksb;
@@ -4671,7 +4671,7 @@ int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid)
if (error)
goto out;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
error = set_unlock_args(flags, ua, &args);
if (error)
@@ -4710,7 +4710,6 @@ int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid)
static int orphan_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
{
- struct dlm_user_args *ua = (struct dlm_user_args *)lkb->lkb_astparam;
struct dlm_args args;
int error;
@@ -4719,7 +4718,7 @@ static int orphan_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
list_add_tail(&lkb->lkb_ownqueue, &ls->ls_orphans);
mutex_unlock(&ls->ls_orphans_mutex);
- set_unlock_args(0, ua, &args);
+ set_unlock_args(0, lkb->lkb_ua, &args);
error = cancel_lock(ls, lkb, &args);
if (error == -DLM_ECANCEL)
@@ -4732,11 +4731,10 @@ static int orphan_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
static int unlock_proc_lock(struct dlm_ls *ls, struct dlm_lkb *lkb)
{
- struct dlm_user_args *ua = (struct dlm_user_args *)lkb->lkb_astparam;
struct dlm_args args;
int error;
- set_unlock_args(DLM_LKF_FORCEUNLOCK, ua, &args);
+ set_unlock_args(DLM_LKF_FORCEUNLOCK, lkb->lkb_ua, &args);
error = unlock_lock(ls, lkb, &args);
if (error == -DLM_EUNLOCK)
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index f778386..65e41e5 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -80,7 +80,7 @@ void dlm_free_lkb(struct dlm_lkb *lkb)
{
if (lkb->lkb_flags & DLM_IFL_USER) {
struct dlm_user_args *ua;
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
+ ua = lkb->lkb_ua;
if (ua) {
if (ua->lksb.sb_lvbptr)
kfree(ua->lksb.sb_lvbptr);
diff --git a/fs/dlm/netlink.c b/fs/dlm/netlink.c
index 863b87d..90374b8 100644
--- a/fs/dlm/netlink.c
+++ b/fs/dlm/netlink.c
@@ -104,7 +104,6 @@ void dlm_netlink_exit(void)
static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)
{
struct dlm_rsb *r = lkb->lkb_resource;
- struct dlm_user_args *ua = (struct dlm_user_args *) lkb->lkb_astparam;
memset(data, 0, sizeof(struct dlm_lock_data));
@@ -117,8 +116,8 @@ static void fill_data(struct dlm_lock_data *data, struct dlm_lkb *lkb)
data->grmode = lkb->lkb_grmode;
data->rqmode = lkb->lkb_rqmode;
data->timestamp = lkb->lkb_timestamp;
- if (ua)
- data->xid = ua->xid;
+ if (lkb->lkb_ua)
+ data->xid = lkb->lkb_ua->xid;
if (r) {
data->lockspace_id = r->res_ls->ls_global_id;
data->resource_namelen = r->res_length;
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index c306045..70b31b9 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -195,8 +195,8 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type)
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;
+ DLM_ASSERT(lkb->lkb_ua, dlm_print_lkb(lkb););
+ ua = lkb->lkb_ua;
proc = ua->proc;
if (type == AST_BAST && ua->bastaddr == NULL)
@@ -771,7 +771,6 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count,
{
struct dlm_user_proc *proc = file->private_data;
struct dlm_lkb *lkb;
- struct dlm_user_args *ua;
DECLARE_WAITQUEUE(wait, current);
int error, type=0, bmode=0, removed = 0;
@@ -842,8 +841,7 @@ static ssize_t device_read(struct file *file, char __user *buf, size_t count,
}
spin_unlock(&proc->asts_spin);
- ua = (struct dlm_user_args *)lkb->lkb_astparam;
- error = copy_result_to_user(ua,
+ error = copy_result_to_user(lkb->lkb_ua,
test_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags),
type, bmode, buf, count);
--
1.5.3.3
--
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