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avg 7392d39323 MFV r323917: 8648 Fix range locking in ZIL commit codepath 
illumos/illumos-gate@42b1411172
42b1411172

https://www.illumos.org/issues/8648
  I'm opening this bug to track integration of the following ZFS on Linux
  commit into illumos:

  commit f763c3d1df569a8d6b60bcb5e95cf07aa7a189e6
  Author: LOLi <loli10K@users.noreply.github.com>
  Date:   Mon Aug 21 17:59:48 2017 +0200

      Fix range locking in ZIL commit codepath

      Since OpenZFS 7578 (1b7c1e5) if we have a ZVOL with logbias=throughput
      we will force WR_INDIRECT itxs in zvol_log_write() setting itx->itx_lr
      offset and length to the offset and length of the BIO from
      zvol_write()->zvol_log_write(): these offset and length are later used
      to take a range lock in zillog->zl_get_data function: zvol_get_data().

      Now suppose we have a ZVOL with blocksize=8K and push 4K writes to
      offset 0: we will only be range-locking 0-4096. This means the
      ASSERTion we make in dbuf_unoverride() is no longer valid because now
      dmu_sync() is called from zilog's get_data functions holding a partial
      lock on the dbuf.

      Fix this by taking a range lock on the whole block in zvol_get_data().

      Reviewed-by: Chunwei Chen <tuxoko@gmail.com>
      Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
      Signed-off-by: loli10K <ezomori.nozomu@gmail.com>

Reviewed by: Igor Kozhukhov <igor@dilos.org>
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: Andriy Gapon <avg@FreeBSD.org>
Reviewed by: Alexander Motin <mav@FreeBSD.org>
Approved by: Robert Mustacchi <rm@joyent.com>
Author: LOLi <loli10K@users.noreply.github.com>

MFC after:	10 days
2017-09-22 08:27:27 +00:00
bin Ammend bin/cat/cat.c so the output is the same aside 2017-09-21 14:14:49 +00:00
cddl MFV r323790: 8567 Inconsistent return value in zpool_read_label 2017-09-20 07:23:50 +00:00
contrib We use a few different ifdef's names to check if we are using Casper or not, 2017-09-21 14:41:41 +00:00
crypto Upgrade to OpenSSH 7.5p1. 2017-08-04 12:57:24 +00:00
etc Regenerate usb.conf . 2017-09-20 15:00:00 +00:00
gnu Remove redundant source and object files. 2017-09-09 13:18:32 +00:00
include An MMC/SD/SDIO stack using CAM 2017-07-09 16:57:24 +00:00
kerberos5 Replace the include path using CURDIR with KRB5DIR. This is consistent 2017-08-21 12:42:05 +00:00
lib Remove redundant initialization. Don't use variable - just return the value. 2017-09-21 10:00:16 +00:00
libexec Deorbit catman. The tradeoff of disk for performance has long since tipped 2017-09-13 16:35:16 +00:00
release Bootstrap etcupdate(8) and mergemaster(8) databases when creating 2017-09-20 15:49:12 +00:00
rescue DIRDEPS_BUILD: Update dependencies. 2017-05-09 01:48:23 +00:00
sbin Use UFS_LINK_MAX instead of LINK_MAX. 2017-09-21 22:33:59 +00:00
secure Convert traditional ${MK_TESTS} conditional idiom for including test 2017-08-02 08:35:51 +00:00
share Add a new COP_F_CIPHER_FIRST flag for struct crypt_op. 2017-09-22 00:21:58 +00:00
sys MFV r323917: 8648 Fix range locking in ZIL commit codepath 2017-09-22 08:27:27 +00:00
targets Deorbit catman. The tradeoff of disk for performance has long since tipped 2017-09-13 16:35:16 +00:00
tests cryptotest.py: Like r323869, skip SHA HMAC tests on non-SHA drivers 2017-09-22 04:41:48 +00:00
tools Always create usr/local/etc -> /etc/local symlink 2017-09-21 23:10:56 +00:00
usr.bin We use a few different ifdef's names to check if we are using Casper or not, 2017-09-21 14:41:41 +00:00
usr.sbin We use a few different ifdef's names to check if we are using Casper or not, 2017-09-21 14:41:41 +00:00
.arcconfig
.arclint
COPYRIGHT Bump copyright year. 2016-12-31 12:41:42 +00:00
LOCKS
MAINTAINERS Add asomers as a pjdfstest co-maintainer per the project status change 2017-06-28 09:25:15 +00:00
Makefile Quote ${MAKE} when passing in env in case it contains spaces. 2017-08-16 17:54:24 +00:00
Makefile.inc1 Makefile.inc1: bump elf tool chain version check after PR 215350 fix 2017-09-06 01:55:40 +00:00
Makefile.libcompat Honor NO_RTLD for rtld-elf, similar to what's done in libexec/Makefile, with 2017-08-17 20:15:20 +00:00
ObsoleteFiles.inc Deorbit catman. The tradeoff of disk for performance has long since tipped 2017-09-13 16:35:16 +00:00
README Vendor import of OpenSSH 7.5p1. 2017-08-03 10:10:20 +00:00
README.md Remove hard line breaks from README.md 2017-03-01 15:39:58 +00:00
UPDATING Fix language used in the r322923. 2017-09-17 10:28:45 +00:00

README.md

FreeBSD Source:

This is the top level of the FreeBSD source directory. This file was last revised on: FreeBSD

For copyright information, please see the file COPYRIGHT in this directory (additional copyright information also exists for some sources in this tree - please see the specific source directories for more information).

The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7) and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/makeworld.html for more information, including setting make(1) variables.

The buildkernel and installkernel targets build and install the kernel and the modules (see below). Please see the top of the Makefile in this directory for more information on the standard build targets and compile-time flags.

Building a kernel is a somewhat more involved process. See build(7), config(8), and http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/kernelconfig.html for more information.

Note: If you want to build and install the kernel with the buildkernel and installkernel targets, you might need to build world before. More information is available in the handbook.

The kernel configuration files reside in the sys/<arch>/conf sub-directory. GENERIC is the default configuration used in release builds. NOTES contains entries and documentation for all possible devices, not just those commonly used.

Source Roadmap:

bin				System/user commands.

cddl			Various commands and libraries under the Common Development  
				and Distribution License.

contrib			Packages contributed by 3rd parties.

crypto			Cryptography stuff (see crypto/README).

etc				Template files for /etc.

gnu				Various commands and libraries under the GNU Public License.  
				Please see gnu/COPYING* for more information.

include			System include files.

kerberos5		Kerberos5 (Heimdal) package.

lib				System libraries.

libexec			System daemons.

release			Release building Makefile & associated tools.

rescue			Build system for statically linked /rescue utilities.

sbin			System commands.

secure			Cryptographic libraries and commands.

share			Shared resources.

sys				Kernel sources.

tests			Regression tests which can be run by Kyua.  See tests/README
				for additional information.

tools			Utilities for regression testing and miscellaneous tasks.

usr.bin			User commands.

usr.sbin		System administration commands.

For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see:

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/synching.html