Description: block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=2039448
 https://lore.kernel.org/all/20220216084038.15635-1-tcs.kernel@gmail.com/
Notes:
Bugs:
upstream: released (5.17-rc5) [cc8f7fe1f5eab010191aa4570f27641876fa1267]
5.10-upstream-stable: released (5.10.115) [a439819f4797f0846c7cffa9475f44aef23c541f]
4.19-upstream-stable: released (4.19.246) [18243d8479fd77952bdb6340024169d30b173a40]
4.9-upstream-stable: released (4.9.317) [d59073bedb7cf752b8cd4027dd0f67cf7ac4330f]
sid: released (5.16.14-1)
5.10-bullseye-security: released (5.10.120-1)
4.19-buster-security: released (4.19.249-1)
4.9-stretch-security: released (4.9.320-2)