I would greatly appreciate any help in understanding the
intent/history of the following code from fs/proc/generic.c:
void free_proc_entry(struct proc_dir_entry *de)
{
int ino = de->low_ino;
if (ino < PROC_DYNAMIC_FIRST &&
ino >= PROC_DYNAMIC_FIRST+PROC_NDYNAMIC)
return;
if (S_ISLNK(de->mode) && de->data)
kfree(de->data);
kfree(de);
}
1. The first "if" statement appears to be dead code -- is this on purpose
or should the condition be || ?
2. Am I correct in assuming that it is bad luck to call proc_register()
from a module (there is no proc_unregister()) ? This is probably just
as well since create_proc_entry() seems more future proof anyway.
3. Would the ability to mount additional (empty) procfs root directories
be of benefit to anyone besides me ? I have 50-60 device operations
that I would like to bind to user space by name with a file system
instead of magic IOCTL numbers, but really hate to clutter up
/proc with random side effects. Is this useful or just dumb ?
Thank You
David Adair
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