[git pull] vfs.git pile 2 - lseek stuff

[Al Viro]

	Jason's lseek series.  One note: after that no_llseek is defined
to NULL; boilerplate initializers ought to be removed, but that's better
done at the end of merge window - fewer conflicts that way.  Could you run

git grep -l -w no_llseek | grep -v porting.rst | while read i; do
	sed -i '/\<no_llseek\>/d' $i
done

just before -rc1 to take that boilerplate out?

The following changes since commit b13baccc3850ca8b8cccbf8ed9912dbaa0fdf7f3:

  Linux 5.19-rc2 (2022-06-12 16:11:37 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git tags/pull-work.lseek

for you to fetch changes up to 868941b14441282ba08761b770fc6cad69d5bdb7:

  fs: remove no_llseek (2022-07-16 09:19:47 -0400)

----------------------------------------------------------------
	Saner handling of "lseek should fail with ESPIPE" - gets rid of
magical no_llseek thing and makes checks consistent.  In particular,
ad-hoc "can we do splice via internal pipe" checks got saner (and
somewhat more permissive, which is what Jason had been after, AFAICT)

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>

----------------------------------------------------------------
Jason A. Donenfeld (6):
      fs: clear or set FMODE_LSEEK based on llseek function
      fs: do not compare against ->llseek
      dma-buf: remove useless FMODE_LSEEK flag
      vfio: do not set FMODE_LSEEK flag
      fs: check FMODE_LSEEK to control internal pipe splicing
      fs: remove no_llseek

 Documentation/filesystems/porting.rst |  8 ++++++++
 drivers/dma-buf/dma-buf.c             |  1 -
 drivers/gpu/drm/drm_file.c            |  3 +--
 drivers/vfio/vfio.c                   |  2 +-
 fs/coredump.c                         |  4 ++--
 fs/file_table.c                       |  2 ++
 fs/open.c                             |  2 ++
 fs/overlayfs/copy_up.c                |  3 +--
 fs/read_write.c                       | 17 +++--------------
 fs/splice.c                           | 10 ++++------
 include/linux/fs.h                    |  2 +-
 kernel/bpf/bpf_iter.c                 |  3 +--
 12 files changed, 26 insertions(+), 31 deletions(-)