On Tue,  4 Jun 2024 10:38:35 -0600
Logan Gunthorpe [off-list ref] wrote:

Hi,

Xiao noticed that the write-zeros tests failed randomly, especially
with small disks. We tracked this down to an issue with signalfd which
coallesced SIGCHLD signals into one. This is fixed by checking the
status of all children after every SIGCHLD.

While we were at it, we noticed a potential reace with SIGCHLD coming
in before the signal was blocked in wait_for_zero_forks() and fix this
by moving the blocking before the child creation.

Thanks,

Logan

--

Applied! 

Thanks,
Mariusz