Go to file
Alexander Motin ba7797c8db ARC: Remove b_bufcnt/b_ebufcnt from ARC headers
In most cases we do not care about exact number of buffers linked
to the header, we just need to know if it is zero, non-zero or one.
That can easily be checked just looking on b_buf pointer or in some
cases derefencing it.

b_ebufcnt is read only once, and in that case we already traverse
the list as part of arc_buf_remove(), so second traverse should not
be expensive.

This reduces L1 ARC header size by 8 bytes and full crypto header by
16 bytes, down to 176 and 232 bytes on FreeBSD respectively.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
Closes #15350
2023-10-07 09:08:20 -07:00
.github Refine some details for the github actions update 2023-03-16 10:00:14 -07:00
cmd Add '-u' - nomount flag for zfs set 2023-10-03 15:41:46 -07:00
config contrib: bash_completion.d: make install destination vendor dependent 2023-10-03 09:06:07 -07:00
contrib contrib: debian: drop bashcompletion mangling after install 2023-10-03 09:06:07 -07:00
etc Revert "systemd: Use non-absolute paths in Exec* lines" 2023-06-07 11:14:05 -07:00
include ARC: Remove b_bufcnt/b_ebufcnt from ARC headers 2023-10-07 09:08:20 -07:00
lib Add '-u' - nomount flag for zfs set 2023-10-03 15:41:46 -07:00
man Add '-u' - nomount flag for zfs set 2023-10-03 15:41:46 -07:00
module ARC: Remove b_bufcnt/b_ebufcnt from ARC headers 2023-10-07 09:08:20 -07:00
rpm rpm: Use libtirpc-devel and /usr/lib on SUSE 2023-02-09 11:57:50 -08:00
scripts Fix kmodtool for packaging mainline Linux 2023-03-22 09:22:52 -07:00
tests Add '-u' - nomount flag for zfs set 2023-10-03 15:41:46 -07:00
udev Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore autoconf: use include directives instead of recursing down cmd 2022-05-10 10:18:38 -07:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
AUTHORS zfs_rename: support RENAME_* flags 2022-10-28 09:49:20 -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 Add native-deb* targets to build native Debian packages 2022-12-13 17:33:05 -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 6.5 compat: META (#15265) 2023-09-19 08:50:01 -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 README: Update OpenZFS website url 2022-01-06 16:25:01 -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

img

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.

codecov coverity

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 12.2-RELEASE.