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Brian Behlendorf 5c1967ebe2 Fix zlib compression
While portions of the code needed to support z_compress_level() and
z_uncompress() where in place.  In reality the current implementation
was non-functional, it just was compilable.

The critical missing component was to setup a workspace for the
compress/uncompress stream structures to use.  A kmem_cache was
added for the workspace area because we require a large chunk
of memory.  This avoids to need to continually alloc/free this
memory and vmap() the pages which is very slow.  Several objects
will reside in the per-cpu kmem_cache making them quick to acquire
and release.  A further optimization would be to adjust the
implementation to additional ensure the memory is local to the cpu.
Currently that may not be the case.
2011-02-25 16:56:22 -08:00
cmd Support custom build directories 2010-09-05 21:49:05 -07:00
config Linux compat 2.6.37, invalidate_inodes() 2011-02-23 12:44:32 -08:00
include Fix zlib compression 2011-02-25 16:56:22 -08:00
lib Support custom build directories 2010-09-05 21:49:05 -07:00
module Fix zlib compression 2011-02-25 16:56:22 -08:00
patches Reimplement rwlocks for Linux lock profiling/analysis. 2009-09-18 16:09:47 -07:00
scripts Support custom build directories 2010-09-05 21:49:05 -07:00
.gitignore Ignore unsigned module build products 2010-03-11 14:29:17 -08:00
AUTHORS Public Release Prep 2010-05-17 15:18:00 -07:00
autogen.sh Public Release Prep 2010-05-17 15:18:00 -07:00
ChangeLog Prep for spl-0.5.0 tag 2010-08-13 09:33:50 -07:00
configure Linux compat 2.6.37, invalidate_inodes() 2011-02-23 12:44:32 -08:00
configure.ac Support custom build directories 2010-09-05 21:49:05 -07:00
COPYING Public Release Prep 2010-05-17 15:18:00 -07:00
DISCLAIMER Public Release Prep 2010-05-17 15:18:00 -07:00
INSTALL Public Release Prep 2010-05-17 15:18:00 -07:00
Makefile.am Support custom build directories 2010-09-05 21:49:05 -07:00
Makefile.in Support custom build directories 2010-09-05 21:49:05 -07:00
META Prep spl-0.6.0-rc1 tag 2011-02-18 09:35:55 -08:00
README.markdown Fix markdown rendering 2010-09-15 09:05:34 -07:00
spl_config.h.in Linux compat 2.6.37, invalidate_inodes() 2011-02-23 12:44:32 -08:00
spl-modules.spec.in Minor spec file cleanup for RHEL6 package dependency. 2010-05-21 11:53:49 -07:00
spl.spec.in Remove usage of the __id_u macro for portability. 2009-10-05 12:51:58 -07:00

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 dont want the overhead of maintaining a large patch which converts Solaris primitives to Linux primitives.

To build packages for your distribution:

$ ./configure
$ make pkg

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