Re: [PATCH/RFC] core/nfsd: allow kernel threads to use task_work.

[Oleg Nesterov]

On 11/28, Oleg Nesterov wrote:
>
> On a related note... Neil, Al, et al, can you look at
>
> 	[PATCH 1/3] fput: don't abuse task_work_add() when possible
> 	https://lore.kernel.org/all/20150908171446.GA14589@xxxxxxxxxx/

Cough... Now that I look at this 8 years old patch again I think
it is wrong, fput() can race with task_work_cancel() so it is not
safe to dereference the first pending work in theory :/

Oleg.