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fuse: simplify request_wait() 

wait_event_interruptible_exclusive_locked() will do everything
request_wait() does, so replace it.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Reviewed-by: Ashish Samant <ashish.samant@oracle.com>
This commit is contained in:
Miklos Szeredi 2015-07-01 16:26:03 +02:00
parent fd22d62ed0
commit 5250921bb0
1 changed files with 5 additions and 25 deletions
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30
fs/fuse/dev.c
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@ -1072,27 +1072,6 @@ static int request_pending(struct fuse_iqueue *fiq)
forget_pending(fiq);
}
/* Wait until a request is available on the pending list */
static void request_wait(struct fuse_iqueue *fiq)
__releases(fiq->waitq.lock)
__acquires(fiq->waitq.lock)
{
DECLARE_WAITQUEUE(wait, current);
add_wait_queue_exclusive(&fiq->waitq, &wait);
while (fiq->connected && !request_pending(fiq)) {
set_current_state(TASK_INTERRUPTIBLE);
if (signal_pending(current))
break;
spin_unlock(&fiq->waitq.lock);
schedule();
spin_lock(&fiq->waitq.lock);
}
set_current_state(TASK_RUNNING);
remove_wait_queue(&fiq->waitq, &wait);
}
/*
* Transfer an interrupt request to userspace
*
@ -1272,13 +1251,14 @@ static ssize_t fuse_dev_do_read(struct fuse_conn *fc, struct file *file,
!request_pending(fiq))
goto err_unlock;
request_wait(fiq);
err = wait_event_interruptible_exclusive_locked(fiq->waitq,
!fiq->connected || request_pending(fiq));
if (err)
goto err_unlock;
err = -ENODEV;
if (!fiq->connected)
goto err_unlock;
err = -ERESTARTSYS;
if (!request_pending(fiq))
goto err_unlock;
if (!list_empty(&fiq->interrupts)) {
req = list_entry(fiq->interrupts.next, struct fuse_req,