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Brian Behlendorf b5ee3df776 Linux 4.14 compat: blk_queue_stackable() 
The blk_queue_stackable() function was replaced in the 4.14 kernel
by queue_is_rq_based(), commit torvalds/linux@5fdee212.  This change
resulted in the default elevator being used which can negatively
impact performance.

Rather than adding additional compatibility code to detect the
new interface unconditionally attempt to set the elevator.  Since
we expect this to fail for block devices without an elevator the
error message has been moved in to zfs_dbgmsg().

Finally, it was observed that the elevator_change() was removed
from the 4.12 kernel, commit torvalds/linux@c033269.  Update the
comment to clearly specify which are expected to export the
elevator_change() symbol.

Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7645
2018-07-06 02:46:51 -07:00
.github Update codecov.yml 2018-03-14 16:10:36 -07:00
cmd Add pool state /proc entry, "SUSPENDED" pools 2018-07-06 02:46:51 -07:00
config Linux 4.14 compat: blk_queue_stackable() 2018-07-06 02:46:51 -07:00
contrib modprobe zfs during dracut mount 2018-05-07 17:19:57 -07:00
etc chmod -x on etc/init.d/zfs-*.in automake files 2018-05-07 17:19:57 -07:00
include Linux 4.14 compat: blk_queue_stackable() 2018-07-06 02:46:51 -07:00
lib Add pool state /proc entry, "SUSPENDED" pools 2018-07-06 02:46:51 -07:00
man Add back iostat -y or -w descriptions 2018-05-07 17:19:57 -07:00
module Linux 4.14 compat: blk_queue_stackable() 2018-07-06 02:46:51 -07:00
rpm Tag zfs-0.7.9 2018-05-08 13:33:38 -07:00
scripts Support Debian DKMS builds 2018-07-06 02:46:51 -07:00
tests Add pool state /proc entry, "SUSPENDED" pools 2018-07-06 02:46:51 -07:00
udev Fix spelling 2017-01-03 11:31:18 -06:00
.gitignore Add configure option to enable gcov analysis 2018-03-14 16:10:36 -07:00
.gitmodules Add zimport.sh compatibility test script 2014-02-21 12:10:31 -08:00
AUTHORS Add a missing > to AUTHORS 2014-09-02 14:18:53 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Add pool state /proc entry, "SUSPENDED" pools 2018-07-06 02:46:51 -07:00
copy-builtin Allow c99 when building ZFS in the kernel tree 2017-03-27 12:31:15 -07:00
COPYRIGHT Update ZED copyright boilerplate 2015-05-11 15:07:00 -07:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am Add support for "--enable-code-coverage" option 2018-03-14 16:10:36 -07:00
META Tag zfs-0.7.9 2018-05-08 13:33:38 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Update codecov.yml 2018-03-14 16:10:36 -07:00
TEST Retire filebench testing 2017-06-01 06:24:28 -07:00
zfs-script-config.sh.in zpool iostat/status -c improvements 2017-06-05 10:52:15 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

img

ZFS on Linux is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community.

codecov

Official Resources

Installation

Full documentation for installing ZoL on your favorite Linux distribution can be found at our site.

Contribute & Develop

We have a separate document with contribution guidelines.