Re: [PATCH 1/5] vfork: don't freezer_count() for in-kernel users of CLONE_VFORK

2013-02-19 Thread Mandeep Singh Baines
On Tue, Feb 19, 2013 at 4:07 PM, Mandeep Singh Baines wrote: > On Sat, Feb 16, 2013 at 9:05 AM, Oleg Nesterov wrote: >> On 02/16, Mandeep Singh Baines wrote: >>> >>> We don't need to call freezer_do_not_count() for in-kernel users >>> of CLONE_VFORK since exec will get called in bounded time. >>>

Re: [PATCH 1/5] vfork: don't freezer_count() for in-kernel users of CLONE_VFORK

2013-02-19 Thread Mandeep Singh Baines
On Sat, Feb 16, 2013 at 9:05 AM, Oleg Nesterov wrote: > On 02/16, Mandeep Singh Baines wrote: >> >> We don't need to call freezer_do_not_count() for in-kernel users >> of CLONE_VFORK since exec will get called in bounded time. >> >> We don't want to call freezer_count() for in-kernel users because

Re: [PATCH 1/5] vfork: don't freezer_count() for in-kernel users of CLONE_VFORK

2013-02-16 Thread Oleg Nesterov
On 02/16, Mandeep Singh Baines wrote: > > We don't need to call freezer_do_not_count() for in-kernel users > of CLONE_VFORK since exec will get called in bounded time. > > We don't want to call freezer_count() for in-kernel users because > they may be holding locks. freezer_count() calls try_to_fre

[PATCH 1/5] vfork: don't freezer_count() for in-kernel users of CLONE_VFORK

2013-02-16 Thread Mandeep Singh Baines
We don't need to call freezer_do_not_count() for in-kernel users of CLONE_VFORK since exec will get called in bounded time. We don't want to call freezer_count() for in-kernel users because they may be holding locks. freezer_count() calls try_to_freeze(). We don't want to freeze an in-kernel user

Re: [PATCH 1/5] vfork: don't freezer_count() for in-kernel users of CLONE_VFORK

2013-02-15 Thread Oleg Nesterov
On 02/14, Mandeep Singh Baines wrote: > > We don't need to call freezer_do_not_count() for in-kernel users > of CLONE_VFORK since exec will get called in bounded time. OK, > We don't want to call freezer_count() for in-kernel users because > they may be holding locks. Who? We should not do this

[PATCH 1/5] vfork: don't freezer_count() for in-kernel users of CLONE_VFORK

2013-02-14 Thread Mandeep Singh Baines
We don't need to call freezer_do_not_count() for in-kernel users of CLONE_VFORK since exec will get called in bounded time. We don't want to call freezer_count() for in-kernel users because they may be holding locks. freezer_count() calls try_to_freeze(). We don't want to freeze an in-kernel user