Description: xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2034813
 https://www.openwall.com/lists/oss-security/2022/01/10/1
Notes:
Bugs:
upstream: released (5.16) [983d8e60f50806f90534cc5373d0ce867e5aaf79]
5.10-upstream-stable: needed
4.19-upstream-stable: needed
4.9-upstream-stable: needed
sid: needed
5.10-bullseye-security: needed
4.19-buster-security: needed
4.9-stretch-security: needed