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authorPatrick Caulfield <pcaulfie@redhat.com>2006-04-25 14:49:01 -0400
committerSteven Whitehouse <swhiteho@redhat.com>2006-04-25 14:49:01 -0400
commit714dc65c34385afbc21342f5bee8d0d25027ac9a (patch)
tree152697e333a34e4ce7502291527a8afe28996274 /fs/dlm
parent96c2c0083d76ca80d546a53089c86e74fbfbe791 (diff)
downloadop-kernel-dev-714dc65c34385afbc21342f5bee8d0d25027ac9a.zip
op-kernel-dev-714dc65c34385afbc21342f5bee8d0d25027ac9a.tar.gz
[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>
Diffstat (limited to 'fs/dlm')
-rw-r--r--fs/dlm/device.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/fs/dlm/device.c b/fs/dlm/device.c
index 99d8b6b..5da4b2e 100644
--- a/fs/dlm/device.c
+++ b/fs/dlm/device.c
@@ -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
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