[PATCH v3 0/7] Page I/O

[Matthew Wilcox]

Hi Andrew,

Now that 3.15-rc1 is out, could you queue these patches for 3.16 please?
Patches 1-3 & 7 are, IMO, worthwhile cleanups / bug fixes, regardless
of the rest of the patch set.

If this patch series gets in, I'll take care of including the NVMe
driver piece.  It'll be a bit more tricky than the proof of concept that
I've been flashing around because we have to make sure that the device
responds better to page sized I/Os than accumulating larger I/Os.

It's indisputably a win for brd and for other NVM technology devices
that are accessed synchronously rather than through DMA.

Matthew Wilcox (7):
  Remove block_write_full_page_endio()
  Factor clean_buffers() out of __mpage_writepage()
  Factor page_endio() out of mpage_end_io()
  Add bdev_read_page() and bdev_write_page()
  swap: Use bdev_read_page() / bdev_write_page()
  brd: Add support for rw_page
  brd: Return -ENOSPC rather than -ENOMEM on page allocation failure

 drivers/block/brd.c         | 16 +++++++--
 fs/block_dev.c              | 63 ++++++++++++++++++++++++++++++++++
 fs/buffer.c                 | 21 +++---------
 fs/ext4/page-io.c           |  2 +-
 fs/mpage.c                  | 84 +++++++++++++++++++++++----------------------
 fs/ocfs2/file.c             |  2 +-
 include/linux/blkdev.h      |  4 +++
 include/linux/buffer_head.h |  2 --
 include/linux/pagemap.h     |  2 ++
 mm/filemap.c                | 25 ++++++++++++++
 mm/page_io.c                | 23 +++++++++++--
 11 files changed, 178 insertions(+), 66 deletions(-)

-- 
1.9.1

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