Merge tag 'for-upstream' of git://repo.or.cz/qemu/kevin into staging

Block layer patches

- Add vduse-blk export
- Dirty bitmaps: Fix and improve bitmap merge
- gluster: correctly set max_pdiscard
-

Merge tag 'for-upstream' of git://repo.or.cz/qemu/kevin into staging

Block layer patches

- Add vduse-blk export
- Dirty bitmaps: Fix and improve bitmap merge
- gluster: correctly set max_pdiscard
- rbd: report a better error when namespace does not exist
- aio_wait_kick: add missing memory barrier
- Code cleanups

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCAAvFiEE3D3rFZqa+V09dFb+fwmycsiPL9YFAmK10yURHGt3b2xmQHJl
# ZGhhdC5jb20ACgkQfwmycsiPL9YnXg/+J9PKsGl7hbJUFVIb4RZ3pMQ0o4xC1TbS
# OjA63RRwdJWt1gGsgLNH6kdsgz04FXiXk7XNDTe8MYn21bvznCYGFsI2EFJiit+x
# HkOYXJwAGsrfKBViq8QznosBQbwf9fOrDUlOdbnixFH/dx6DXUZM2F9ud5shiuiC
# vrP76zjUgSlHhPwL+0xsJSNxxNISv845uN9SYNpiGbZDaYLBtNbEc8NA2GMOYW45
# sCbxJDxNSFNrTT5gaZyo4KGFH9393qJSmYHJ+q53elbhje5dpmcn2c/AkIG7/UM4
# HsEWd7Gj1YbLQV6kvkefJzF4BOuZmN/b8sG+LRDjrEMHLeOw5rh2ETmkQfIdy2H3
# 2U52mHqw9bMGWtds0ocOJFKw3vPZuOCJaA+ql/A0aWGO9Fjivx1cQcOVXn3jKgj5
# 7riSxigK9TCTd92Qhi3j4do86mJi9NpjgawbQ5oOvKqUiq29moOwcv1hit0WVzwB
# hJp2qsrM6w00wFseyp+10vHigW7ZMNEIh4TKYLfZ15Gvy6YIG/m/oyCYF4oVM5y5
# knbsnJBRpTjLnggag86Pk8Ji+Lxi0cbv7zrbn++/S9OLQ5VMV5OpxKXHmyX2HyXa
# RCV0rMaTC3s4hy8gElDSwSeor6NBaJ9TECcit67uJ/kw1eK+omoa4hKMCgKf6qYC
# GY+NRPELJGA=
# =OuiN
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 24 Jun 2022 08:07:17 AM PDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]

* tag 'for-upstream' of git://repo.or.cz/qemu/kevin:
vduse-blk: Add name option
vduse-blk: Add serial option
nbd: Drop dead code spotted by Coverity
aio_wait_kick: add missing memory barrier
block/gluster: correctly set max_pdiscard
block/rbd: report a better error when namespace does not exist
qsd: document vduse-blk exports
libvduse: Add support for reconnecting
vduse-blk: Add vduse-blk resize support
vduse-blk: Implement vduse-blk export
libvduse: Add VDUSE (vDPA Device in Userspace) library
linux-headers: Add vduse.h
block/export: Abstract out the logic of virtio-blk I/O process
block/export: Fix incorrect length passed to vu_queue_push()
block: Support passing NULL ops to blk_set_dev_ops()
block: simplify handling of try to merge different sized bitmaps
block: improve block_dirty_bitmap_merge(): don't allocate extra bitmap
block: block_dirty_bitmap_merge(): fix error path
block: get rid of blk->guest_block_size
block: drop unused bdrv_co_drain() API

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

vduse-blk: Implement vduse-blk export

This implements a VDUSE block backends based on
the libvduse library. We can use it to export the BDSs
for both VM and container (host) usage.

The new command-

vduse-blk: Implement vduse-blk export

This implements a VDUSE block backends based on
the libvduse library. We can use it to export the BDSs
for both VM and container (host) usage.

The new command-line syntax is:

$ qemu-storage-daemon \
--blockdev file,node-name=drive0,filename=test.img \
--export vduse-blk,node-name=drive0,id=vduse-export0,writable=on

After the qemu-storage-daemon started, we need to use
the "vdpa" command to attach the device to vDPA bus:

$ vdpa dev add name vduse-export0 mgmtdev vduse

Also the device must be removed via the "vdpa" command
before we stop the qemu-storage-daemon.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20220523084611.91-7-xieyongji@bytedance.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>

show more ...