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pipe: switch wait_for_partner() and wake_up_partner() to pipe_inode_info 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
hifive-unleashed-5.1
Al Viro 2013-03-21 02:07:59 -04:00
parent 599a0ac14e
commit fc7478a2bf
1 changed files with 9 additions and 9 deletions
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18
fs/pipe.c
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@ -986,21 +986,21 @@ SYSCALL_DEFINE1(pipe, int __user *, fildes)
return sys_pipe2(fildes, 0);
}
static int wait_for_partner(struct inode* inode, unsigned int *cnt)
static int wait_for_partner(struct pipe_inode_info *pipe, unsigned int *cnt)
{
int cur = *cnt;
while (cur == *cnt) {
pipe_wait(inode->i_pipe);
pipe_wait(pipe);
if (signal_pending(current))
break;
}
return cur == *cnt ? -ERESTARTSYS : 0;
}
static void wake_up_partner(struct inode* inode)
static void wake_up_partner(struct pipe_inode_info *pipe)
{
wake_up_interruptible(&inode->i_pipe->wait);
wake_up_interruptible(&pipe->wait);
}
static int fifo_open(struct inode *inode, struct file *filp)
@ -1032,7 +1032,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
*/
pipe->r_counter++;
if (pipe->readers++ == 0)
wake_up_partner(inode);
wake_up_partner(pipe);
if (!is_pipe && !pipe->writers) {
if ((filp->f_flags & O_NONBLOCK)) {
@ -1040,7 +1040,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
* seen a writer */
filp->f_version = pipe->w_counter;
} else {
if (wait_for_partner(inode, &pipe->w_counter))
if (wait_for_partner(pipe, &pipe->w_counter))
goto err_rd;
}
}
@ -1058,10 +1058,10 @@ static int fifo_open(struct inode *inode, struct file *filp)
pipe->w_counter++;
if (!pipe->writers++)
wake_up_partner(inode);
wake_up_partner(pipe);
if (!is_pipe && !pipe->readers) {
if (wait_for_partner(inode, &pipe->r_counter))
if (wait_for_partner(pipe, &pipe->r_counter))
goto err_wr;
}
break;
@ -1079,7 +1079,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
pipe->r_counter++;
pipe->w_counter++;
if (pipe->readers == 1 || pipe->writers == 1)
wake_up_partner(inode);
wake_up_partner(pipe);
break;
default: