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pipe: set file->private_data to ->i_pipe 

simplify get_pipe_info(), while we are at it

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2013-03-21 11:16:56 -04:00
parent 72b0d9aacb
commit de32ec4cfe
2 changed files with 10 additions and 11 deletions
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4
fs/coredump.c
View File

@ -409,9 +409,7 @@ static void coredump_finish(struct mm_struct *mm)
static void wait_for_dump_helpers(struct file *file)
{
struct pipe_inode_info *pipe;
pipe = file_inode(file)->i_pipe;
struct pipe_inode_info *pipe = file->private_data;
pipe_lock(pipe);
pipe->readers++;

17
fs/pipe.c
View File

@ -363,7 +363,7 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
unsigned long nr_segs, loff_t pos)
{
struct file *filp = iocb->ki_filp;
struct pipe_inode_info *pipe = file_inode(filp)->i_pipe;
struct pipe_inode_info *pipe = filp->private_data;
int do_wakeup;
ssize_t ret;
struct iovec *iov = (struct iovec *)_iov;
@ -486,7 +486,7 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
unsigned long nr_segs, loff_t ppos)
{
struct file *filp = iocb->ki_filp;
struct pipe_inode_info *pipe = file_inode(filp)->i_pipe;
struct pipe_inode_info *pipe = filp->private_data;
ssize_t ret;
int do_wakeup;
struct iovec *iov = (struct iovec *)_iov;
@ -662,7 +662,7 @@ out:
static long pipe_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct pipe_inode_info *pipe = file_inode(filp)->i_pipe;
struct pipe_inode_info *pipe = filp->private_data;
int count, buf, nrbufs;
switch (cmd) {
@ -688,7 +688,7 @@ static unsigned int
pipe_poll(struct file *filp, poll_table *wait)
{
unsigned int mask;
struct pipe_inode_info *pipe = file_inode(filp)->i_pipe;
struct pipe_inode_info *pipe = filp->private_data;
int nrbufs;
poll_wait(filp, &pipe->wait, wait);
@ -749,7 +749,7 @@ pipe_release(struct inode *inode, struct file *file)
static int
pipe_fasync(int fd, struct file *filp, int on)
{
struct pipe_inode_info *pipe = file_inode(filp)->i_pipe;
struct pipe_inode_info *pipe = filp->private_data;
int retval = 0;
pipe_lock(pipe);
@ -887,12 +887,14 @@ int create_pipe_files(struct file **res, int flags)
goto err_dentry;
f->f_flags = O_WRONLY | (flags & (O_NONBLOCK | O_DIRECT));
f->private_data = inode->i_pipe;
res[0] = alloc_file(&path, FMODE_READ, &pipefifo_fops);
if (IS_ERR(res[0]))
goto err_file;
path_get(&path);
res[0]->private_data = inode->i_pipe;
res[0]->f_flags = O_RDONLY | (flags & O_NONBLOCK);
res[1] = f;
return 0;
@ -1035,6 +1037,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
spin_unlock(&inode->i_lock);
}
}
filp->private_data = pipe;
/* OK, we have a pipe and it's pinned down */
pipe_lock(pipe);
@ -1233,9 +1236,7 @@ int pipe_proc_fn(struct ctl_table *table, int write, void __user *buf,
*/
struct pipe_inode_info *get_pipe_info(struct file *file)
{
struct inode *i = file_inode(file);
return S_ISFIFO(i->i_mode) ? i->i_pipe : NULL;
return file->f_op == &pipefifo_fops ? file->private_data : NULL;
}
long pipe_fcntl(struct file *file, unsigned int cmd, unsigned long arg)