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Dongli Zhang bd912ef3e4 xen/blkfront: always allocate grants first from per-queue persistent grants
This patch partially reverts 3df0e50 ("xen/blkfront: pseudo support for
multi hardware queues/rings"). The xen-blkfront queue/ring might hang due
to grants allocation failure in the situation when gnttab_free_head is
almost empty while many persistent grants are reserved for this queue/ring.

As persistent grants management was per-queue since 73716df ("xen/blkfront:
make persistent grants pool per-queue"), we should always allocate from
persistent grants first.

Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2017-07-25 11:31:09 -04:00
arch KVM fixes for v4.13-rc2 2017-07-21 13:58:10 -07:00
block blk-mq: map queues to all present CPUs 2017-07-24 10:01:31 -06:00
certs
crypto
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-07-20 16:33:39 -07:00
drivers xen/blkfront: always allocate grants first from per-queue persistent grants 2017-07-25 11:31:09 -04:00
firmware
fs NFS client bugfixes for 4.13 2017-07-21 16:26:01 -07:00
include NFS client bugfixes for 4.13 2017-07-21 16:26:01 -07:00
init
ipc
kernel Three minor updates 2017-07-21 13:59:51 -07:00
lib Add wait_for_random_bytes() and get_random_*_wait() functions so that 2017-07-15 12:44:02 -07:00
mm
net NFS client bugfixes for 4.13 2017-07-21 16:26:01 -07:00
samples
scripts
security Now that IPC and other changes have landed, enable manual markings for 2017-07-19 08:55:18 -07:00
sound
tools Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-07-21 11:12:48 -07:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS MAINTAINERS: fix alphabetical ordering 2017-07-21 18:59:11 -07:00
Makefile Linux v4.13-rc1 2017-07-15 15:22:10 -07:00
README

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.