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proc: Delete create_proc_read_entry()

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Delete create_proc_read_entry() as it no longer has any users.

Also delete read_proc_t, write_proc_t, the read_proc member of the
proc_dir_entry struct and the support functions that use them.  This saves a
pointer for every PDE allocated.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
David Howells 2013-04-11 03:20:50 +01:00 • committed by Al Viro
parent 526c59784c
commit 3cb5bf1bf9
4 changed files with 1 additions and 220 deletions
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35
fs/proc/inode.c
View file

@ -183,41 +183,6 @@ void proc_entry_rundown(struct proc_dir_entry *de)
spin_unlock(&de->pde_unload_lock);
}
/* ->read_proc() users - legacy crap */
static ssize_t
proc_file_read(struct file *file, char __user *buf, size_t nbytes,
loff_t *ppos)
{
struct proc_dir_entry *pde = PDE(file_inode(file));
ssize_t rv = -EIO;
if (use_pde(pde)) {
rv = __proc_file_read(file, buf, nbytes, ppos);
unuse_pde(pde);
}
return rv;
}
static loff_t
proc_file_lseek(struct file *file, loff_t offset, int orig)
{
loff_t retval = -EINVAL;
switch (orig) {
case 1:
offset += file->f_pos;
/* fallthrough */
case 0:
if (offset < 0 || offset > MAX_NON_LFS)
break;
file->f_pos = retval = offset;
}
return retval;
}
const struct file_operations proc_file_operations = {
.llseek = proc_file_lseek,
.read = proc_file_read,
};
static loff_t proc_reg_llseek(struct file *file, loff_t offset, int whence)
{
struct proc_dir_entry *pde = PDE(file_inode(file));