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Brian Behlendorf dba1d70566 Fix arc_adapt() spinning in iterate_supers_type() 
The iterate_supers_type() function which was introduced in the
3.0 kernel was supposed to provide a safe way to call an arbitrary
function on all super blocks of a specific type.  Unfortunately,
because a list_head was used a bug was introduced which made it
possible for iterate_supers_type() to get stuck spinning on a
super block which was just deactivated.

This can occur because when the list head is removed from the
fs_supers list it is reinitialized to point to itself.  If the
iterate_supers_type() function happened to be processing the
removed list_head it will get stuck spinning on that list_head.

The bug was fixed in the 3.3 kernel by converting the list_head
to an hlist_node.  However, to resolve the issue for existing
3.0 - 3.2 kernels we detect when a list_head is used.  Then to
prevent the spinning from occurring the .next pointer is set to
the fs_supers list_head which ensures the iterate_supers_type()
function will always terminate.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1045
Closes #861
Closes #790
2013-07-17 09:28:06 -07:00
cmd Add FreeBSD 'zpool labelclear' command 2013-07-09 15:58:05 -07:00
config Fix arc_adapt() spinning in iterate_supers_type() 2013-07-17 09:28:06 -07:00
dracut Refresh dracut module setup 2013-03-21 12:51:06 -07:00
etc Improve OpenRC init script 2013-06-18 17:03:25 -07:00
include Add new kstat for monitoring time in dmu_tx_assign 2013-07-11 13:53:44 -07:00
lib Fix zpool_read_label() 2013-07-09 16:02:04 -07:00
man Add FreeBSD 'zpool labelclear' command 2013-07-09 15:58:05 -07:00
module Fix arc_adapt() spinning in iterate_supers_type() 2013-07-17 09:28:06 -07:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
rpm Add dkms_version conditional 2013-07-11 15:39:25 -07:00
scripts Open pools asynchronously after module load 2013-07-03 09:24:38 -07:00
udev Open pools asynchronously after module load 2013-07-03 09:24:38 -07:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:59 -07:00
AUTHORS Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
configure.ac Modified arcstat.py to run on linux 2013-06-18 15:43:15 -07:00
copy-builtin Consistent menuconfig name 2012-08-26 13:49:37 -07:00
COPYRIGHT Refresh links to web site 2013-03-06 15:46:41 -08:00
DISCLAIMER Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
Makefile.am build: do not call boilerplate ourself 2013-04-02 10:55:20 -07:00
META Tag zfs-0.6.1 2013-03-26 08:50:29 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix minor typos and update marketing copy. 2013-03-21 12:51:06 -07:00
zfs-script-config.sh.in Retire zpool_id infrastructure 2013-01-29 12:23:17 -08:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.markdown

Native ZFS for Linux!

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

ZFS on Linux, which is also known as ZoL, is currently feature complete. It includes fully functional and stable SPA, DMU, ZVOL, and ZPL layers.

Full documentation for installing ZoL on your favorite Linux distribution can be found at: http://zfsonlinux.org