On Tue, Aug 09, 2016 at 04:29:43PM +1000, Dave Chinner wrote: > On Mon, Aug 08, 2016 at 10:41:32AM -0700, Darrick J. Wong wrote: > > On Mon, Aug 08, 2016 at 04:13:59PM +0800, Eryu Guan wrote: > > > On Thu, Jul 21, 2016 at 04:47:38PM -0700, Darrick J. Wong wrote: > > > > Add a few tests to stress the new swapext code for reflink and rmap. > > > > +_reflink_range "$testdir/file1" 0 "$testdir/file2" 0 $bytes >> > > > > "$seqres.full" > > > > + > > > > +echo "Defrag the big file" > > > > +old_nextents=$(xfs_io -c 'stat -v' $testdir/file1 | grep 'nextents' | > > > > cut -d ' ' -f 3) > > > > > > There's a "_count_extents" helper, does that work for this case? > > > > It can, though stat -v reports GETFSXATTR results, which should be faster > > than > > _count_extents because the latter FIEMAPs the entire file and counts lines. > > Seeing as XFS records the extent count in the inode, we might as well use > > it. > > perhaps put a special xfs case in _count_extents() that does this > rather than FIEMAP?
Ok. Seems simple enough to do. --D > > Cheers, > > Dave. > -- > Dave Chinner > da...@fromorbit.com -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
