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OpenZFS on Linux and FreeBSD
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Tim Chase ae26dd0039 Don't allow shrinking a PF_FSTRANS context 
Avoid deadlocks when entering the shrinker from a PF_FSTRANS context.

This patch also reverts commit d0d5dd7 which added MUTEX_FSTRANS.  Its
use has been deprecated within ZFS as it was an ineffective mechanism
to eliminate deadlocks.  Among other things, it introduced the need for
strict ordering of mutex locking and unlocking in order that the
PF_FSTRANS flag wouldn't set incorrectly.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #446
 		2015-04-03 11:32:31 -07:00
cmd Retire legacy debugging infrastructure 2014-11-19 10:35:07 -08:00
config Add RHEL style kmod packages 2015-03-27 14:42:04 -07:00
include Don't allow shrinking a PF_FSTRANS context 2015-04-03 11:32:31 -07:00
lib Remove autotools products 2012-08-27 11:46:23 -07:00
man Refine slab cache sizing 2015-01-16 13:55:09 -08:00
module Don't allow shrinking a PF_FSTRANS context 2015-04-03 11:32:31 -07:00
rpm Add RHEL style kmod packages 2015-03-27 14:42:04 -07:00
scripts Retire legacy debugging infrastructure 2014-11-19 10:35:07 -08:00
.gitignore Ignore *.{deb,rpm,tar.gz} files in the top directory. 2013-04-24 16:18:14 -07:00
AUTHORS Refresh AUTHORS 2012-12-19 09:40:18 -08:00
COPYING Public Release Prep 2010-05-17 15:18:00 -07:00
DISCLAIMER Public Release Prep 2010-05-17 15:18:00 -07:00
META Make license compatibility checks consistent 2014-10-17 15:07:28 -07:00
Makefile.am Kernel header installation should respect --prefix 2014-10-28 09:31:48 -07:00
README.markdown Document how to run SPLAT 2013-10-09 13:52:59 -07:00
autogen.sh build: do not call boilerplate ourself 2013-04-02 11:08:46 -07:00
configure.ac Add RHEL style kmod packages 2015-03-27 14:42:04 -07:00
copy-builtin Copy spl.release.in to kernel dir 2013-06-21 15:40:04 -07:00
spl.release.in Move spl.release generation to configure step 2012-07-12 12:13:47 -07:00

README.markdown

The Solaris Porting Layer (SPL) is a Linux kernel module which provides many of the Solaris kernel APIs. This shim layer makes it possible to run Solaris kernel code in the Linux kernel with relatively minimal modification. This can be particularly useful when you want to track upstream Solaris development closely and do not want the overhead of maintaining a large patch which converts Solaris primitives to Linux primitives.

To build packages for your distribution:

$ ./configure
$ make pkg

If you are building directly from the git tree and not an officially released tarball you will need to generate the configure script. This can be done by executing the autogen.sh script after installing the GNU autotools for your distribution.

To copy the kernel code inside your kernel source tree for builtin compilation:

$ ./configure --enable-linux-builtin --with-linux=/usr/src/linux-...
$ ./copy-builtin /usr/src/linux-...

The SPL comes with an automated test suite called SPLAT. The test suite is implemented in two parts. There is a kernel module which contains the tests and a user space utility which controls which tests are run. To run the full test suite:

$ sudo insmod ./module/splat/splat.ko
$ sudo ./cmd/splat --all

Full documentation for building, configuring, testing, and using the SPL can be found at: http://zfsonlinux.org