Description of problem:
On latest master where ctime feature is enabled by default, creation of tar file throws warning that 'file changed as we read it'

Version-Release number of selected component (if applicable):
mainline

How reproducible:
Always

Steps to Reproduce:
1. Create a replica 1*3 gluster volume and mount it.
2. Untar a file onto gluster mount
   #tar xvf ~/linux-5.0.6.tar.xz -C /gluster-mnt/
3. Create tar file from untarred files
   #mkdir /gluster-mnt/test-untar/
   #cd /gluster-mnt
   #tar -cvf ./test-untar/linux.tar ./linux-5.0.6

Actual results:
Creation of tar file from gluster mount throws warning 'file changed as we read it'

Expected results:
Creation of tar file from gluster mount should not throw any warning.

Additional info: