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[DLM] Convert a semaphore to a completion 

Convert a semaphore into a completion in device.c.

Cc: David Teigland <teigland@redhat.com>
Cc: Andrew Morton <akpm@osdl.org>
Signed-off-by: Patrick Caulfield <pcaulfie@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Patrick Caulfield 2006-04-25 14:49:01 -04:00 committed by Steven Whitehouse
parent 96c2c0083d
commit 714dc65c34
1 changed files with 8 additions and 10 deletions
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18
fs/dlm/device.c
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@ -79,7 +79,7 @@ struct lock_info {
struct list_head li_ownerqueue;
struct file_info *li_file;
struct dlm_lksb __user *li_user_lksb;
struct semaphore li_firstlock;
struct completion li_firstcomp;
};
/* A queued AST no less */
@ -376,8 +376,7 @@ static void ast_routine(void *param)
li->li_lksb.sb_status != 0) {
/* Wait till dlm_lock() has finished */
down(&li->li_firstlock);
up(&li->li_firstlock);
wait_for_completion(&li->li_firstcomp);
spin_lock(&li->li_file->fi_li_lock);
list_del(&li->li_ownerqueue);
@ -808,10 +807,10 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
li->li_castaddr = kparams->castaddr;
li->li_castparam = kparams->castparam;
/* OK, this isn;t exactly a FIRSTLOCK but it is the
/* OK, this isn't exactly a FIRSTLOCK but it is the
first time we've used this lockinfo, and if things
fail we want rid of it */
init_MUTEX_LOCKED(&li->li_firstlock);
init_completion(&li->li_firstcomp);
set_bit(LI_FLAG_FIRSTLOCK, &li->li_flags);
add_lockinfo(li);
@ -839,10 +838,10 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
if (!li)
return -ENOMEM;
/* semaphore to allow us to complete our work before
/* Allow us to complete our work before
the AST routine runs. In fact we only need (and use) this
when the initial lock fails */
init_MUTEX_LOCKED(&li->li_firstlock);
init_completion(&li->li_firstcomp);
set_bit(LI_FLAG_FIRSTLOCK, &li->li_flags);
}
@ -892,7 +891,7 @@ static int do_user_lock(struct file_info *fi, uint8_t cmd,
if (add_lockinfo(li))
printk(KERN_WARNING "Add lockinfo failed\n");
up(&li->li_firstlock);
complete(&li->li_firstcomp);
}
/* Return the lockid as the user needs it /now/ */
@ -936,8 +935,7 @@ static int do_user_unlock(struct file_info *fi, uint8_t cmd,
/* Wait until dlm_lock() has completed */
if (!test_bit(LI_FLAG_ONLIST, &li->li_flags)) {
down(&li->li_firstlock);
up(&li->li_firstlock);
wait_for_completion(&li->li_firstcomp);
}
/* dlm_unlock() passes a 0 for castaddr which means don't overwrite