Messages in this thread Patch in this message | | | Date | Sat, 22 Mar 2008 12:12:05 +0900 | From | Akinobu Mita <> | Subject | [PATCH 3/5] cdrom: protect cdrom_device_info list by mutex |
| |
This patch protects the list of cdrom_device_info by cdrom_mutex when the file in /proc/sys/dev/cdrom/ is written.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Jens Axboe <axboe@kernel.dk> --- drivers/cdrom/cdrom.c | 2 ++ 1 file changed, 2 insertions(+)
Index: 2.6-git/drivers/cdrom/cdrom.c =================================================================== --- 2.6-git.orig/drivers/cdrom/cdrom.c +++ 2.6-git/drivers/cdrom/cdrom.c @@ -3427,6 +3427,7 @@ static void cdrom_update_settings(void) { struct cdrom_device_info *cdi; + mutex_lock(&cdrom_mutex); for (cdi = topCdromPtr; cdi != NULL; cdi = cdi->next) { if (autoclose && CDROM_CAN(CDC_CLOSE_TRAY)) cdi->options |= CDO_AUTO_CLOSE; @@ -3445,6 +3446,7 @@ static void cdrom_update_settings(void) else cdi->options &= ~CDO_CHECK_TYPE; } + mutex_unlock(&cdrom_mutex); } static int cdrom_sysctl_handler(ctl_table *ctl, int write, struct file * filp,
| |