Description: ext4: zero out the unused memory region in the extent tree block
References:
 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git/commit/?id=592acbf16821288ecdc4192c47e3774a4c48bb64
Notes:
Bugs:
upstream: released (5.2-rc1) [592acbf16821288ecdc4192c47e3774a4c48bb64]
4.19-upstream-stable: released (4.19.45) [25d010f4e0ece1ddf0d8d57942c0b0f1568fe498]
4.9-upstream-stable: released (4.9.178) [ab6d14e83db6e08c39a867a4cba378f7a774d273]
3.16-upstream-stable: released (3.16.69) [13c4be25bdcbe5045f9b17ad875c3253a4888e45]
sid: released (4.19.37-4) [bugfix/all/ext4-zero-out-the-unused-memory-region-in-the-extent.patch]
4.9-stretch-security: released (4.9.168-1+deb9u3) [bugfix/all/ext4-zero-out-the-unused-memory-region-in-the-extent.patch]
3.16-jessie-security: released (3.16.68-2) [bugfix/all/ext4-zero-out-the-unused-memory-region-in-the-extent-tree-block.patch]