[git pull] ufs fixes

[Al Viro]

	More UFS fixes, unfortunately including build regression fix for the
64bit s_dsize commit.  Fixed in this pile:
	* trivial bug in signedness of 32bit timestamps on ufs1
	* ESTALE instead of ufs_error() when doing open-by-fhandle on
something deleted
	* build regression on 32bit in ufs_new_fragments() - calculating
that many percents of u64 pulls libgcc stuff on some of those.  Mea culpa.
	* fix hysteresis loop broken by typo in 2.4.14.7 (right next to
the location of previous bug).
	* fix the insane limits of said hysteresis loop on filesystems with
very low percentage of reserved blocks.  If it's 5% or less, just use the
OPTSPACE policy.
	* calculate those limits once and mount time.

I can separate and send just the build regression part if you wish.  I would
rather avoid that, though - mul_64_32_div() called again and again, to
calculate the same value... ugh.

That tree does pass xfstests clean (both ufs1 and ufs2) and it _does_ survive
cross-builds.  Again, my apologies for missing that, especially since I have
noticed a related percentage-of-64bit issue in earlier patches (when dealing
with amount of reserved blocks).  Self-LART applied...

The following changes since commit a8fad984833832d5ca11a9ed64ddc55646da30e3:

  ufs_truncate_blocks(): fix the case when size is in the last direct block (2017-06-15 03:57:46 -0400)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git ufs-fixes

for you to fetch changes up to 77e9ce327d9b607cd6e57c0f4524a654dc59c4b1:

  ufs: fix the logics for tail relocation (2017-06-17 17:22:42 -0400)

----------------------------------------------------------------
Al Viro (3):
      fix signedness of timestamps on ufs1
      ufs_iget(): fail with -ESTALE on deleted inode
      ufs: fix the logics for tail relocation

 fs/ufs/balloc.c | 22 ++++++----------------
 fs/ufs/inode.c  | 27 +++++++++++----------------
 fs/ufs/super.c  |  9 +++++++++
 fs/ufs/ufs_fs.h |  2 ++
 4 files changed, 28 insertions(+), 32 deletions(-)