From d292c0cc489fa642799494bddbd7c94d11f7bbc1 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Wed, 6 Feb 2008 23:27:04 -0600 Subject: 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 --- 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 12c3bfd5e66..52b11960a17 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 a53c237f310..d30ea8b433a 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 94f8cbd3c0b..8f250ac8b92 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 f7783867491..65e41e5569b 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 863b87d0dc7..90374b84876 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 c3060458b68..70b31b91487 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); -- cgit v1.2.3-70-g09d2