On 04/02/2020 07:16 AM, Michael Kerrisk (man-pages) wrote:
> Hello Mike,
>
> On 4/2/20 4:08 AM, Mike Christie wrote:
>> This patch documents the PR_SET_IO_FLUSHER and PR_GET_IO_FLUSHER
>> prctl commands added to the linux kernel for 5.6 in commit:
>>
>> commit 8d19f1c8e1937baf74e1962aae9f90fa3aeab463
>> Author: Mike Christie <mchristi@xxxxxxxxxx>
>> Date: Mon Nov 11 18:19:00 2019 -0600>
>> prctl: PR_{G,S}ET_IO_FLUSHER to support controlling memory reclaim
>>
>> Signed-off-by: Mike Christie <mchristi@xxxxxxxxxx>
>
> I've applied this patch, but I have some questions:
Hey,
Thanks for fixing up the patch for me.
>
> (a) What happens to the IO_FLUSHER setting in the child of fork(2)?
The child will inherit the setting.
> (b) What happens to the IO_FLUSHER setting during an execve(2)?
> (Is it preserved, reset, something else?)
It's preserved.
