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Rob N e675852bc1
dbuf: separate refcount calls for dbuf and dbuf_user 
In 92dc4ad83 I updated the dbuf_cache accounting to track the size of
userdata associated with dbufs. This adds the size of the dbuf+userdata
together in a single call to zfs_refcount_add_many(), but sometime
removes them in separate calls to zfs_refcount_remove_many(), if dbuf
and userdata are evicted separately.

What I didn't realise is that when refcount tracking is on,
zfs_refcount_add_many() and zfs_refcount_remove_many() are expected to
be paired, with their second & third args (count & holder) the same on
both sides. Splitting the remove part into two calls means the counts
don't match up, tripping a panic.

This commit fixes that, by always adding and removing the dbuf and
userdata counts separately.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reported-by: Mark Johnston <markj@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16191
2024-05-15 13:03:41 -07:00
.github Move nodes into correct subgraphs 2024-01-29 09:16:02 -08:00
cmd zdb/ztest: send dbgmsg output to stderr 2024-05-14 09:49:00 -07:00
config libspl/assert: use libunwind for backtrace when available 2024-05-01 10:52:05 -07:00
contrib Python 3.12 deprecated python3-distutils 2024-04-25 13:40:09 -07:00
etc etc/init.d: decide which variant to use at build time. 2024-04-08 16:52:24 -07:00
include zdb/ztest: send dbgmsg output to stderr 2024-05-14 09:49:00 -07:00
lib backtrace: rework for signal safety 2024-05-14 09:48:51 -07:00
man Disable high priority ZIO threads on FreeBSD and Linux 2024-05-03 09:53:34 -07:00
module dbuf: separate refcount calls for dbuf and dbuf_user 2024-05-15 13:03:41 -07:00
rpm zfs-kmod: fix empty rpm requires/conflicts 2024-04-22 17:55:41 -07:00
scripts zts: add a debug option to get full test output 2024-04-16 09:13:01 -07:00
tests Add support for parallel pool exports 2024-05-14 08:57:41 -07:00
udev udev: correctly handle partition #16 and later 2024-03-21 16:38:24 -07:00
.cirrus.yml CI: add FreeBSD build with Cirrus CI 2023-10-06 08:50:26 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore Packaging: Auto-generate changelog during configure (#15528) 2023-11-16 08:58:47 -08:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
.mailmap AUTHORS: refresh with recent new contributors 2024-04-11 14:49:57 -07:00
AUTHORS AUTHORS: refresh with recent new contributors 2024-04-11 14:49:57 -07:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
configure.ac Packaging: Auto-generate changelog during configure (#15528) 2023-11-16 08:58:47 -08:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -07:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Process script directory for all configs 2022-10-27 16:45:14 -07:00
META Linux 6.8 compat: META (#16099) 2024-04-17 09:29:21 -07:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md FreeBSD: Fix the build on FreeBSD 12 2023-11-27 12:58:03 -08:00
RELEASES.md Add RELEASES.md file 2021-04-02 16:33:40 -07:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Official Resources

Installation

Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.

Contribute & Develop

We have a separate document with contribution guidelines.

We have a Code of Conduct.

Release

OpenZFS is released under a CDDL license. For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 12.4-RELEASE.