pipe: switch wait_for_partner() and wake_up_partner() to pipe_inode_info
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Родитель
599a0ac14e
Коммит
fc7478a2bf
18
fs/pipe.c
18
fs/pipe.c
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@ -986,21 +986,21 @@ SYSCALL_DEFINE1(pipe, int __user *, fildes)
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return sys_pipe2(fildes, 0);
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}
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static int wait_for_partner(struct inode* inode, unsigned int *cnt)
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static int wait_for_partner(struct pipe_inode_info *pipe, unsigned int *cnt)
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{
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int cur = *cnt;
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while (cur == *cnt) {
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pipe_wait(inode->i_pipe);
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pipe_wait(pipe);
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if (signal_pending(current))
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break;
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}
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return cur == *cnt ? -ERESTARTSYS : 0;
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}
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static void wake_up_partner(struct inode* inode)
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static void wake_up_partner(struct pipe_inode_info *pipe)
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{
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wake_up_interruptible(&inode->i_pipe->wait);
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wake_up_interruptible(&pipe->wait);
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}
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static int fifo_open(struct inode *inode, struct file *filp)
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@ -1032,7 +1032,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
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*/
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pipe->r_counter++;
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if (pipe->readers++ == 0)
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wake_up_partner(inode);
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wake_up_partner(pipe);
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if (!is_pipe && !pipe->writers) {
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if ((filp->f_flags & O_NONBLOCK)) {
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@ -1040,7 +1040,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
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* seen a writer */
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filp->f_version = pipe->w_counter;
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} else {
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if (wait_for_partner(inode, &pipe->w_counter))
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if (wait_for_partner(pipe, &pipe->w_counter))
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goto err_rd;
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}
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}
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@ -1058,10 +1058,10 @@ static int fifo_open(struct inode *inode, struct file *filp)
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pipe->w_counter++;
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if (!pipe->writers++)
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wake_up_partner(inode);
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wake_up_partner(pipe);
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if (!is_pipe && !pipe->readers) {
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if (wait_for_partner(inode, &pipe->r_counter))
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if (wait_for_partner(pipe, &pipe->r_counter))
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goto err_wr;
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}
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break;
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@ -1079,7 +1079,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
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pipe->r_counter++;
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pipe->w_counter++;
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if (pipe->readers == 1 || pipe->writers == 1)
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wake_up_partner(inode);
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wake_up_partner(pipe);
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break;
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default:
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