Hello.
On 01/18/2013 11:17 PM, Pete Zaitcev wrote:
>>>Don't forget that the same code is working in 2.4 for several years.
>> In mainline? Or some random vendor-specific kernel branch where we have
>> no visiblity into? :)
> Yes, it's in mainline since 2006. However, I am in full agreemen
On Fri, 18 Jan 2013 11:59:45 -0800
Greg KH wrote:
> >Don't forget that the same code is working in 2.4 for several years.
>
> In mainline? Or some random vendor-specific kernel branch where we have
> no visiblity into? :)
Yes, it's in mainline since 2006. However, I am in full agreement w
Hello.
On 01/18/2013 10:59 PM, Greg KH wrote:
Serialize usb-storage operations with usbfs and 'cat
/proc/bus/usb/devices',
so that they cannot disturb storage by seemingly harmless control reads.
This patch was adapted from 2.4 patches by Pete Zaitcev. The initial
pat
Hello.
On 01/18/2013 10:51 PM, Greg KH wrote:
>> +/*
>> + * This is our custom open-coded lock, similar to r/w locks in concept.
>> + * It prevents usb-storage, usbfs, and /proc from simultaneous access.
>> + */
>> +wait_queue_head_t excl_wait;
>> +spinlock_t excl_lock;
>>
On Fri, Jan 18, 2013 at 11:52:53PM +0300, Sergei Shtylyov wrote:
> Hello.
>
> On 01/18/2013 10:48 PM, Greg KH wrote:
>
> >> Serialize usb-storage operations with usbfs and 'cat
> >> /proc/bus/usb/devices',
> >> so that they cannot disturb storage by seemingly harmless control reads.
>
> >> This
Hello.
On 01/18/2013 10:48 PM, Greg KH wrote:
>> Serialize usb-storage operations with usbfs and 'cat /proc/bus/usb/devices',
>> so that they cannot disturb storage by seemingly harmless control reads.
>> This patch was adapted from 2.4 patches by Pete Zaitcev. The initial patch
>> of
>> the s
On Fri, Jan 18, 2013 at 11:35:49PM +0300, Sergei Shtylyov wrote:
> + /*
> + * This is our custom open-coded lock, similar to r/w locks in concept.
> + * It prevents usb-storage, usbfs, and /proc from simultaneous access.
> + */
> + wait_queue_head_t excl_wait;
> + spinloc
On Fri, Jan 18, 2013 at 11:35:49PM +0300, Sergei Shtylyov wrote:
> Serialize usb-storage operations with usbfs and 'cat /proc/bus/usb/devices',
> so that they cannot disturb storage by seemingly harmless control reads.
>
> This patch was adapted from 2.4 patches by Pete Zaitcev. The initial patch
