[Linux-parport] [PATCH 20/59] sysctl: cdrom Don't set de->owner

Eric W. Biederman ebiederm at xmission.com
Tue Jan 16 11:39:25 EST 2007

From: Eric W. Biederman <ebiederm at xmission.com> - unquoted

There is no need for open files in /proc/sys/XXX to hold
a reference count on the module that provides the file
to prevent module unload races.  While there is code active
in the module p->used in the sysctl_table_header is incremented,
preventing the sysctl from being unregisted.  Once the
sysctl is unregistered it cannot be found.  Open files
are also not a problem as they revalidate the sysctl information
and bump p->used before accessing module code.

So setting de->owner is unnecessary, makes for a bad example
and gets in my way of removing ctl_table->de.

Signed-off-by: Eric W. Biederman <ebiederm at xmission.com>
 drivers/cdrom/cdrom.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index f0a6801..14f72c4 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -3554,8 +3554,6 @@ static void cdrom_sysctl_register(void)
 	cdrom_sysctl_header = register_sysctl_table(cdrom_root_table, 0);
-	if (cdrom_root_table->ctl_name && cdrom_root_table->child->de)
-		cdrom_root_table->child->de->owner = THIS_MODULE;
 	/* set the defaults */
 	cdrom_sysctl_settings.autoclose = autoclose;

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