Description: fix regression in "epoll: Keep a reference on files added to the check list"
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2031928
Notes:
Bugs:
upstream: released (5.9-rc4) [77f4689de17c0887775bb77896f4cc11a39bf848]
5.10-upstream-stable: N/A "Fixed before branching point"
4.19-upstream-stable: released (4.19.144) [37d933e8b41b83bb8278815e366aec5a542b7e31]
4.9-upstream-stable: released (4.9.236) [8238ee93a30a5ff6fc75751e122a28e0d92f3e12]
sid: released (5.8.10-1)
5.10-bullseye-security: N/A "Fixed before branching point"
4.19-buster-security: released (4.19.146-1)
4.9-stretch-security: released (4.9.240-1)