On Sun, Apr 28, 2019 at 5:28 PM Waiman Long wrote:
>
> Not really, this is a serious problem that have to be backported to
> earlier stable releases and downstream. The clever code is helpful in
> those cases.
Fair enough, I guess the code will live in the stable trees for a longish while.
On 4/28/19 8:10 PM, Linus Torvalds wrote:
> On Sun, Apr 28, 2019 at 4:12 PM Waiman Long wrote:
>> I implemented your suggestion in patch 1 as it will produce simpler and
>> faster code. However, one of the changes in my patchset is to wake up
>> all the readers in the wait list. This means I have
On Sun, Apr 28, 2019 at 4:12 PM Waiman Long wrote:
>
> I implemented your suggestion in patch 1 as it will produce simpler and
> faster code. However, one of the changes in my patchset is to wake up
> all the readers in the wait list. This means I have to jump over the
> writers and wake up the re
On 4/28/19 7:12 PM, Waiman Long wrote:
> On 4/28/19 6:46 PM, Linus Torvalds wrote:
>> This doesn't seem to be the full diff - looking at that patch 1 you
>> seem to have taken my suggested list_cut_before() change too.
>>
>> I'm not against it (it does seem to be simpler and better), I just
>> hope
On 4/28/19 6:46 PM, Linus Torvalds wrote:
> This doesn't seem to be the full diff - looking at that patch 1 you
> seem to have taken my suggested list_cut_before() change too.
>
> I'm not against it (it does seem to be simpler and better), I just
> hope you double-checked it, since I kind of hand-w
This doesn't seem to be the full diff - looking at that patch 1 you
seem to have taken my suggested list_cut_before() change too.
I'm not against it (it does seem to be simpler and better), I just
hope you double-checked it, since I kind of hand-waved it.
Linus
On Sun, Apr 28
v7:
- Fix a bug in patch 1 and include changes suggested by Linus.
- Refresh the other patches accordingly.
v6:
- Add a new patch 1 to fix an existing rwsem bug that allows both
readers and writer to become rwsem owners simultaneously.
- Fix a missed wakeup bug (in patch 9) of the v5
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