On Sat, Sep 20, 2014 at 11:42 PM, Greg Kroah-Hartman
wrote:
> On Sat, Sep 20, 2014 at 10:18:39PM +0900, Roman Peniaev wrote:
>> On Sat, Sep 20, 2014 at 6:42 AM, Greg Kroah-Hartman
>> wrote:
>> > On Fri, Sep 19, 2014 at 09:44:24PM +0900, Roman Pen wrote:
>> >> The thing is that built-in modules ar
On Sat, Sep 20, 2014 at 10:18:39PM +0900, Roman Peniaev wrote:
> On Sat, Sep 20, 2014 at 6:42 AM, Greg Kroah-Hartman
> wrote:
> > On Fri, Sep 19, 2014 at 09:44:24PM +0900, Roman Pen wrote:
> >> The thing is that built-in modules are being inited before
> >> rootfs mount. Some of the modules can r
Thanks, Oleg, for the review.
--
Roman
On Sat, Sep 20, 2014 at 4:45 AM, Oleg Nesterov wrote:
> On 09/19, Roman Pen wrote:
>>
>> +void wait_for_rootfs(void)
>> +{
>> + /* Here we try to protect from a few things:
>> + * 1. Avoid waiting for ourselves, when init thread has not
>> + *
On Sat, Sep 20, 2014 at 6:42 AM, Greg Kroah-Hartman
wrote:
> On Fri, Sep 19, 2014 at 09:44:24PM +0900, Roman Pen wrote:
>> The thing is that built-in modules are being inited before
>> rootfs mount. Some of the modules can request firmware loading
>> from another thread using async 'request_firmw
On Fri, Sep 19, 2014 at 09:44:24PM +0900, Roman Pen wrote:
> The thing is that built-in modules are being inited before
> rootfs mount. Some of the modules can request firmware loading
> from another thread using async 'request_firmware_nowait' call
> on inition, so we can catch this kind of race:
On 09/19, Roman Pen wrote:
>
> +void wait_for_rootfs(void)
> +{
> + /* Here we try to protect from a few things:
> + * 1. Avoid waiting for ourselves, when init thread has not
> + *mounted rootfs yet.
> + * 2. Avoid warning if call chain was initiated from userspace
> +
The thing is that built-in modules are being inited before
rootfs mount. Some of the modules can request firmware loading
from another thread using async 'request_firmware_nowait' call
on inition, so we can catch this kind of race:
rootfs does not exist yet, but we are going to open and load
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