Hi Linus,
This pull request contains a set of fixes for xen-blkback by way of
Konrad, and a performance regression fix for blk-mq for shared tags. The
latter could account for as much as a 50x reduction in performance, with
the test case from the user with 500 name spaces. A more realistic setup
on my end with 32 drives showed a 3.5x drop. The fix has been thoroughly
tested before being committed.
Please pull!
git://git.kernel.dk/linux-block.git for-linus
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Jan Beulich (1):
xen-blkback: don't leak stack data via response ring
Jens Axboe (2):
Merge branch 'stable/for-jens-4.12' of git://git.kernel.org/.../konrad/xen into for-linus
blk-mq: fix performance regression with shared tags
Juergen Gross (3):
xen/blkback: fix disconnect while I/Os in flight
xen/blkback: don't free be structure too early
xen/blkback: don't use xen_blkif_get() in xen-blkback kthread
block/blk-mq-sched.c | 58 +++++++++++++++++++++++++++++--------
block/blk-mq-sched.h | 9 ------
block/blk-mq.c | 16 ++++++++--
drivers/block/xen-blkback/blkback.c | 26 ++++++++---------
drivers/block/xen-blkback/common.h | 26 ++++-------------
drivers/block/xen-blkback/xenbus.c | 15 +++++-----
include/linux/blkdev.h | 2 ++
7 files changed, 87 insertions(+), 65 deletions(-)
--
Jens Axboe
