FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 75cd4e098d178433436abce08146a21647bb4585 ("f2fs: support FALLOC_FL_ZERO_RANGE")

We found after your commit, the xfstests test case 009/042 failed.

=========================================================================================
compiler/disk/fs/kconfig/rootfs/tbox_group/test/testcase:
  gcc-4.9/4HDD/f2fs/x86_64-rhel/debian-x86_64-2015-02-07.cgz/vm-kbuild-4G/generic-quick/xfstests

commit: 
  b4ace33703243fed56f8bfc80a001533acb9decb
  75cd4e098d178433436abce08146a21647bb4585

b4ace33703243fed 75cd4e098d178433436abce081 
---------------- -------------------------- 
       fail:runs  %reproduction    fail:runs
           |             |             |    
           :18          94%          17:18    xfstests.generic.009.fail
           :18          94%          17:18    xfstests.generic.042.fail


To reproduce:

        git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Ying Huang