'\" t
.\"     Title: struct pipe_inode_info
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: July 2017
.\"    Manual: pipes API
.\"    Source: Kernel Hackers Manual 4.11.6
.\"  Language: English
.\"
.TH "STRUCT PIPE_INODE_IN" "9" "July 2017" "Kernel Hackers Manual 4\&.11\&" "pipes API"
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.SH "NAME"
struct_pipe_inode_info \- a linux kernel pipe
.SH "SYNOPSIS"
.sp
.nf
struct pipe_inode_info {
  struct mutex mutex;
  wait_queue_head_t wait;
  unsigned int nrbufs;
  unsigned int curbuf;
  unsigned int buffers;
  unsigned int readers;
  unsigned int writers;
  unsigned int files;
  unsigned int waiting_writers;
  unsigned int r_counter;
  unsigned int w_counter;
  struct page * tmp_page;
  struct fasync_struct * fasync_readers;
  struct fasync_struct * fasync_writers;
  struct pipe_buffer * bufs;
  struct user_struct * user;
};  
.fi
.SH "MEMBERS"
.PP
struct mutex mutex
.RS 4
mutex protecting the whole thing
.RE
.PP
wait_queue_head_t wait
.RS 4
reader/writer wait point in case of empty/full pipe
.RE
.PP
unsigned int nrbufs
.RS 4
the number of non\-empty pipe buffers in this pipe
.RE
.PP
unsigned int curbuf
.RS 4
the current pipe buffer entry
.RE
.PP
unsigned int buffers
.RS 4
total number of buffers (should be a power of 2)
.RE
.PP
unsigned int readers
.RS 4
number of current readers of this pipe
.RE
.PP
unsigned int writers
.RS 4
number of current writers of this pipe
.RE
.PP
unsigned int files
.RS 4
number of struct file referring this pipe (protected by \->i_lock)
.RE
.PP
unsigned int waiting_writers
.RS 4
number of writers blocked waiting for room
.RE
.PP
unsigned int r_counter
.RS 4
reader counter
.RE
.PP
unsigned int w_counter
.RS 4
writer counter
.RE
.PP
struct page * tmp_page
.RS 4
cached released page
.RE
.PP
struct fasync_struct * fasync_readers
.RS 4
reader side fasync
.RE
.PP
struct fasync_struct * fasync_writers
.RS 4
writer side fasync
.RE
.PP
struct pipe_buffer * bufs
.RS 4
the circular array of pipe buffers
.RE
.PP
struct user_struct * user
.RS 4
the user who created this pipe
.RE
.SH "COPYRIGHT"
.br