Update memory limit for container

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
Benchmark for jsonlog.WriteLog

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Test for jsonlog.WriteLog

Signed-off-by: Alexandr Morozov <lk4d4@docker.com>
Merge pull request #8182 from LK4D4/logjson_benchmark

pkg/logjson benchmark and test
Merge pull request #8173 from crosbymichael/update-mem-limit

Update memory limit for container
devmapper: use 'user_xattr' as mountoption for ext4 - fixes #6189

># docker pull centos
># docker run -i -t centos /bin/bash

~~~
bash-4.1# touch file
bash-4.1# setfattr -n user.attr -v 1 file
setfattr: file: Operation not permitted
~~~

With 'user_xattr' as mount option

~~~
bash-4.1# touch file
bash-4.1# setfattr -n user.attr -v 1 file
bash-4.1# getfattr -d -m. file
>#file: file
user.xattr="1"
~~~

Signed-off-by: Harshavardhana <fharshav@redhat.com>
bring in image layer user xattr support - fixes #6189

Signed-off-by: Harshavardhana <fharshav@redhat.com>
handle ERANGE properly Lgetxattr() - fixes #6189

Signed-off-by: Harshavardhana <fharshav@redhat.com>