[PULL] vhost: infrastructure changes for 3.16

[Michael S. Tsirkin]

Hi Linus,
Please pull the following.
Please note this needs to be merged before merging
target-pending PULL which Nicholas will be sending
out shortly.

Thanks!

The following changes since commit 1860e379875dfe7271c649058aeddffe5afd9d0d:

  Linux 3.15 (2014-06-08 11:19:54 -0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git tags/for_linus

for you to fetch changes up to 47283bef7ed356629467d1fac61687756e48f254:

  vhost: move memory pointer to VQs (2014-06-09 16:21:07 +0300)

----------------------------------------------------------------
vhost: infrastructure changes for 3.16

This reworks vhost core dropping unnecessary RCU uses in favor of VQ mutexes
which are used on fast path anyway.  This fixes worst-case latency for users
which change the memory mappings a lot.
Memory allocation for vhost-net now supports fallback on vmalloc (same as for
vhost-scsi) this makes it possible to create the device on systems where memory
is very fragmented, with slightly lower performance.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>

----------------------------------------------------------------
Michael S. Tsirkin (4):
      vhost-net: extend device allocation to vmalloc
      vhost: replace rcu with mutex
      vhost: move acked_features to VQs
      vhost: move memory pointer to VQs

 drivers/vhost/vhost.h | 19 ++++------
 drivers/vhost/net.c   | 35 ++++++++++++-------
 drivers/vhost/scsi.c  | 26 ++++++++------
 drivers/vhost/test.c  | 11 +++---
 drivers/vhost/vhost.c | 97 ++++++++++++++++++++++++++-------------------------
 5 files changed, 101 insertions(+), 87 deletions(-)
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