Thanks for reviewing. I will update it. ----- Original Message ----- > From: "Xiao Yang" <yangx.jy@xxxxxxxxxxxxxx> > To: "XiaoLi Feng" <xifeng@xxxxxxxxxx> > Cc: fstests@xxxxxxxxxxxxxxx, "darrick wong" <darrick.wong@xxxxxxxxxx> > Sent: Monday, February 8, 2021 9:27:17 AM > Subject: Re: [PATCH v1] generic/608: verify S_DAX is active immediately for DONTCACHE > > Hi XiaoLi, > > I prefer to update the existing tests because both writing drop_caches > and remount are unnecessary since Li Hao's patches. > test_drop_caches --> test_drop_cache > test_cycle_mount --> test_nocache > > The detail of test_drop_cache: > ------------------------------- > test_caches() > { > local t_file=$SCRATCH_MNT/testfile > > rm -f $t_file > touch $t_file > _check_xflag $t_file 0 > _check_s_dax $t_file 0 > > exec 3< $t_file > > $XFS_IO_PROG -c 'chattr +x' $t_file > _check_xflag $t_file 1 > _check_s_dax $t_file 0 > > # One application is using test file and check if S_DAX on > # the file doesn't take effect immediately > _check_s_dax $t_file 0 > > exec 3<&- > > # No application is using test file and check if S_DAX on > # the file takes effect immediately > _check_s_dax $t_file 1 > } > ------------------------------- > > Best Regards, > Xiao Yang > On 2021/2/5 22:17, XiaoLi Feng wrote: > > From: Xiaoli Feng <xifeng@xxxxxxxxxx> > > > > After upstream linux patches(77573fa310d, 88149082bb8), if > > FS_XFLAG_DAX is set, DONTCACHE is also set. So S_DAX on the file > > should be active immediately once FS_XFLAG_DAX is set. > > > > Signed-off-by: Xiaoli Feng <xifeng@xxxxxxxxxx> > > --- > > tests/generic/608 | 17 +++++++++++++++++ > > 1 file changed, 17 insertions(+) > > > > diff --git a/tests/generic/608 b/tests/generic/608 > > index dd89d91c..278fb4d1 100755 > > --- a/tests/generic/608 > > +++ b/tests/generic/608 > > @@ -7,6 +7,7 @@ > > # the file can take effect immediately by the following steps: > > # 1) Stop all applications which are using the file. > > # 2) Do drop_caches or umount & mount cycle. > > +# 3) DONTCACHE is set. > > > > seq=`basename $0` > > seqres=$RESULT_DIR/$seq > > @@ -91,6 +92,20 @@ test_cycle_mount() > > _check_s_dax $t_file 0 > > } > > > > +test_nocache() > > +{ > > + local t_file=$SCRATCH_MNT/testnocache > > + > > + rm -f $t_file > > + touch $t_file > > + _check_xflag $t_file 0 > > + _check_s_dax $t_file 0 > > + > > + $XFS_IO_PROG -c 'chattr +x' $t_file > > + _check_xflag $t_file 1 > > + _check_s_dax $t_file 1 > > +} > > + > > do_tests() > > { > > local mount_option=$1 > > @@ -100,6 +115,8 @@ do_tests() > > > > test_drop_caches > > > > + test_nocache > > + > > test_cycle_mount "$cycle_mount_option" > > > > _scratch_unmount > > > >