[PATCH 0/5] vmsplice: fix some problems in my previous vmsplice patchset

This patchset is for VFS. Of course, it depends on my previous vmsplice
patchset.

I fix some problems in my previous patchset.

1. Fix problem with CLASS(fd, f)(fd). See first patch for details.
This is probably not so important, but I fix it anyway.

2. Change "unsigned long" back to "int". See second patch for details.
Again, this is probably not important, but I want to fix this anyway.

3. Fix that LTP vmsplice01 bug.

See patches for details.

Please, run that LTP vmsplice01 test again.

Notes:

- I want to repeat: I change behavior around SPLICE_F_NONBLOCK.
Previously, vmsplice ignored whether pipe itself was opened as
non-blocking file. Now it is not ignored. And in my opinion
new behavior is better.
- vmsplice(2) now is in fs/read_write.c . It is very similar to
preadv2 and pwritev2 now, so I think it belongs to fs/read_write.c now.

Please, review this patchset carefully. I'm still new contributor.
In particular, please, review that do-while loop, I'm not sure I did
everything right.

Tested in Qemu.

Askar Safin (5):
  vmsplice: open-code do_writev and do_readv
  vmsplice: change argument type back to "int"
  splice: turn wait_for_space flags argument into bool
  pipe: move wait_for_space to fs/pipe.c and rename it
  vmsplice: make sure we don't wait after writing some data

 fs/pipe.c                 | 17 +++++++++++
 fs/read_write.c           | 61 ++++++++++++++++++++++++++++++++++-----
 fs/splice.c               | 19 +-----------
 include/linux/pipe_fs_i.h |  2 ++
 include/linux/syscalls.h  |  2 +-
 5 files changed, 75 insertions(+), 26 deletions(-)


base-commit: 8d86fcfc2857d64af85f5c87c193c25655c970af (vfs-7.2.vmsplice)
-- 
2.47.3