Add build system

Add autoconf style build infrastructure to the ZFS tree.  This
includes autogen.sh, configure.ac, m4 macros, some scripts/*,
and makefiles for all the core ZFS components.

1 files changed, 576 insertions, 0 deletions

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+2010-08-13 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.5.0
+
+	* : The ChangeLog is being retired.  Please use the git commit
+	logs for a full records of changes: 'git log --no-merges'
+
+2010-05-21 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.9 - Use 'git log --no-merges' for full change log.
+
+	 * : Build system improvements:
+	- Added support for the 'make -s' silent build option.
+	- Allow zfs_config.h to be included by dependent packages.
+	- Minor spec file updates.
+	- Minor build system message updates.
+
+	* : Topic branch cleanup.  Several old branches were removed and
+	numerous hunks which were accidentaly commited to incorrect topic
+	branches in the past were relocated to the correct topic branch.
+
+	* *.c, *.h, *.sh, AUTHORS, COPYING, COPYRIGHT, DISCLAIMER, README:
+	Added standard header to source files which includes the copyright,
+	license, and author information.  Additionally, updated the listed
+	top level files to the latest versions.
+
+	* cmd/zpool/zpool_vdev.c: Check all partitions with check_file()
+	even when no libblkid is found.  This oversight would result in
+	ZFS not detecting existing filesystems on partitions.
+
+	* module/zfs/fm.c, module/zfs/zfs_fm, libzfs/libzfs_pool.c:
+	Added zevents which are similar to Solaris FMA support.  The
+	existing FMA and sysevent call points in ZFS were unified in
+	to a single event type and used to create a user space visible
+	event notification system under Linux.  The new 'zpool events'
+	command can be used to show all recent ZFS events.
+
+	* module/zfs/spa.c, module/zfs/zil.c: Suppress large memory
+	allocation warnings for two particular kmem_alloc()'s.  For
+	now we can live with them as is but long term a way should be
+	found to perform small allocations or use the vmem based slab.
+
+	* module/zfs/zvol.c: Recreate volume and snapshot /dev links during
+	module load.  Links in /dev for volumes/snapshots were only being
+	created at volume/snapshot creation time.  Those links are now also
+	created dynamically at module load time based on the spa config.
+
+	* module/zfs/zvol.c, module/zfs/include/sys/blkdev.h: The handler
+	zvol_request() should use the unlocked version of blk_end_request()
+	to avoid a deadlock in the ZVOL.
+
+2010-03-11 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.8 - Use 'git log --no-merges' for full change log.
+
+	* : Build system improvements:
+	- Remove Module.markers and Module.symver{s} in clean target.
+	- Improved kernel source detection when none specified.
+	- Fix RPM definitions for the unknown distro/installation.
+	- Check for spl in ../spl if not found in install path.
+	- Include all headers regardless of depth in packages.
+	- Allow recursive configure/make.
+
+	* lib/libzpool/kernel.c: Fixed several zdb bugs when opening a pool
+	- zdb wasn't getting the correct device size when the vdev is a
+	  block device.  In Solaris, fstat64() returns the device size but
+	  in Linux an ioctl() is needed.
+	- make sure that we don't try to open a block device in write mode
+	  from userspace.  This shouldn't happen, because zdb opens devices
+	  in read-only mode, and ztest only uses files.
+
+	* lib/libspl/include/umem.h: Add umem_alloc_aligned() and honor
+	cache_align field for umem cache.  Under linux we open block devices
+	with O_DIRECT which means we must provide aligned memory buffers.
+
+	* lib/libzpool/kernel.c: Fix some incorrect error handling.  In
+	vn_open(), if fstat64() returned an error, the real errno was being
+	obscured by calling close().
+
+	* scripts/*: Fix scripts to work when invoked from other directories.
+
+	* module/zfs/arc.c: Fix struct ht_lock padding in arc.c.
+
+	* lib/libefi/include/sys/uuid.h: Fix duplicate uuid_t typedef.
+
+	* module/zfs/txg.c: Use CPU percentages for number of commit cb
+	threads.  This doesn't change number of threads in the kernel, but it
+	reduces number of threads in ztest (important due to 32-bit address
+	limitations).
+
+	* cmd/ztest/ztest.c: Clean up emulation of kernel threads in
+	userspace.  Updated to use pthread thread specific data rather than
+	keeping a global list.  This also fixes at least one easily
+	reproducible crash in ztest
+
+	* META, config/kernel.m4: Add configure check for kernel build
+	options which are incompatible with the license.  If your building
+	against a kernel deemed incompatible configure will fail and
+	suggest how you should rebuild your kernel.
+
+	* config/kernel-fmode-t.m4: Linux 2.6.28 compat, add a check for the
+	fmode_t type.  This typedef first appears in 2.6.28 kernels as part
+	of some block device operation reworking.
+
+	* module/zfs/dmu_send.c: No inline to keep dmu_recv_stream() stack
+	frame less than 1024 bytes.  Recent builds against 2.6.31 flagged
+	dmu_recv_stream() as stack heavy.  Further analysis of this function
+	should be performed to further reduce its stack usage.
+
+	* scripts/common.sh: Split the udev rule from a specific configuration
+	by providing a generic 60-zpool.rules file which uses a small helper
+	util 'zpool_id' to parse a configuration file by default located in
+	/etc/zfs/zdev.conf.  The helper script maps a by-path udev name to a
+	more friendly name of <channel><rank> for large configurations.
+
+	Additionally, when running zpool-create.sh in-tree it will no longer
+	use udev because we would have to copy certain helper scripts in to
+	the installed system.  To avoid this the config file in simply
+	parsed and symlinks are created in your working tree.  The script
+	will use udev if it as run as part of an installed zfs-test package.
+
+	* module/zfs/zvol.c: Use check_disk_change() instead of
+	revalidate_disk().  For 2.6.27 kernels are earlier revalidate_disk()
+	was not available.  However, check_disk_change() has been available
+	for far longer and will properly inform the kernel of the volume
+	change for both older and newer kernels.
+
+	* module/zfs/dmu.c: Fixed incorrect ASSERT3S() added by ZVOL.
+
+	* module/zfs/vdev_raidz.c, module/zfs/zvol.c: Minor fixes for 32-bit.
+
+	* scripts/zfs-update.sh, man/man8/*: Added man pages based on the
+	latest documentation and modified zfs-update.sh script to update them.
+
+	* .gitignore: Updated .gitignore rules to exclude build products.
+
+2009-11-24 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.7 - Use 'git log --no-merges' for full change log.
+
+	* module/zcommon/include/sys/fs/zfs.h, module/zfs/include/sys/blkdev.h,
+	  module/zfs/include/sys/dmu.h, module/zfs/dmu.c,
+	  module/zfs/include/sys/zvol.h, module/zfs/zvol.c,
+	  module/zfs/zfs_ioctl.c:
+	Added the ZVOL block device, with the addition of the ZVOL real ZFS
+	based block devices are available and can be compared head to head
+	with Linux's MD and LVM block drivers.  The Linux ZVOL has not yet
+	had any performance work done but from a user perspective it should
+	be functionally complete and behave like any other Linux block device.
+	The ZVOL has so far been tested using zconfig.sh on the following
+	x86_64 based platforms: FC11, CHAOS4, RHEL5, RHEL6, and SLES11.
+	However, more testing is required to ensure everything is working
+	as designed.
+
+	* scripts/udev-rules/99-zpool.rules.promise,
+	  scripts/zpool-config/promise-raid0-1x16.sh,
+	  scripts/zpool-config/promise-raid10-8x2.sh,
+	  scripts/zpool-config/promise-raidz-2x8.sh,
+	  scripts/zpool-config/promise-raidz2-2x8.sh:
+	Additional test configurations for a small 16 drive JBOD.
+
+	* module/zfs/arc.c: Linux 2.6.31 compat, mutexes can now exceed 64
+	bytes depending on the the kernel build options.  To account for
+	this increase the pad size to 256 bytes.
+
+	* module/zfs/vdev_disk.c: Linux 2.6.31 compat, to get the hard
+	sector size use bdev_logical_block_size() this function replaces
+	bdev_hardsect_size().
+
+	* module/zfs/zfs_rlock.c: Prevent gcc uninit compiler warning in
+	zfs_range_unlock_reader().
+
+	* Makefile.am: Ensure *.order and *.markers build products are
+	removed by distclean rule.
+
+2009-11-02 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.6 - Use 'git log --no-merges' for full change log.
+
+	* Rebased to ZFS b121 from OpenSolaris.
+
+	* module/zfs/vdev_disk.c: Finally a feature complete implementation:
+	- Handle dynamic bio merge_bdev limitations when constructing the
+	bio set associated with a dio.  This previously prevented us from
+	layering cleanly on the md and dm virtual devices.
+	- Removed hard coded 512 byte sector size.
+	- Correctly determine the device size when using a partition.
+	- Hold and extra dio reference when submitting bio's using
+	bio_submit() to prevent a completion race.
+
+	* lib/libefi/*: Added fully function libefi library from Solaris.
+	This allows us to properly create and access GPT style partition
+	tables which are used when a whole device is added to a zpool.
+
+	* cmd/zpool/zpool_vdev.c: Fully integrated zpool with Linux package
+	libblkid.  This allows zpool to identify existing devices of
+	various types to prevent devices from accidentally being used.  When
+	given a whole device with a GPT partition table all partitions will
+	be checked for existing filesystems.  At the moment MBR style
+	partition tables cannot be check and the force option must be used.
+
+	* cmd/zpool/zpool_vdev.c: Solaris devid support has been removed in
+	favor of Linux's udev.  This means that a zpool device will always be
+	opened using the path provided at configuration time.  This may
+	initially seem limiting but it has certain advantages:
+	- When creating a zpool where the physical location of the device
+	is NOT import simply create the pool using the /dev/disk/by-id paths.
+	This will ensure that regardless of physical location the device
+	will be properly located.
+	- When creating a zpool where the physical location of the device
+	is important use the /dev/disk/by-path paths.  This will ensure that
+	devices are never accidentally detected and used in an incorrect
+	location which would compromise the redundancy of the system.
+	- Ever better you can create use your own udev rules file to setup
+	any mapping and naming convention you desire.  One example of a
+	custom rule is to map physical device locations using grid with
+	numbers are letter for coordinates.  Each letter might represent
+	a specific bus/channel and each number a specific device.  For large
+	configurations this provides an easy way to identify devices.
+
+	* module/zpios/zpios.c: Update to use kobject_set_name() for
+	increased portability.
+
+	* modules/*/*: Update module init/exit access points to use
+	spl_module_{init,exit}() macro API.  This ensures the cwd is
+	immediately set to '/' and may be leveraged latter for any
+	additional module setup/cleanup which is required.
+
+	* cmd/ztest/ztest.c: Check ftrucate() return code to prevent
+	warnings when --fortify-source options is used in rpm builds.
+
+	* config/Rules.am: Set DEBUG/NDEBUG globally when building user
+	space components.
+
+	* scripts/zconfig.sh: Initial hook for running additional sanity
+	tests are part of 'make check'.  Currently, there are only two
+	tests which do some basic configuration checking but they should
+	be extended as much as possible to prevent regressions.  Tests
+	should also all be written so they run entirely in-tree.
+
+	* scripts/zpios-sanity.sh: Initial hook for validating real IO
+	using all block devices and all raid configurations.  Supported
+	device types include scsi, ide, md, dm, ram, loop, and file. 
+	Supported raid types include raid0, raid10, raidz, and raidz2.
+
+	* scripts/zpool-config/*: Update dragon and x4550 configs to use
+	custom udev rules file with <A-Z><1-N> naming convention.  Add
+	configs for md, dm, and ram block devices to verify functionality.
+
+	* zfs-test.spec.in: Added zfs-test package which extends the existing
+	in-tree test infrastructure such that it can be run as part of an
+	installed package.  This simplifies the testing of tagged releases.
+
+	* zfs-modules.spec.in: Various spec file tweaks for the supported
+	distros: RHEL5, RHEL6, SLES10, SLES11, Chaos4, Fedora 11.
+
+2009-08-04 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.5 - Use 'git log --no-merges' for full change log.
+
+	* FC11 and SLES11 support: This includes all compatibility changes
+	to support 2.6.29 based kernels and the required build system
+	improvements.
+	* lib/libspl/asm-generic/atomic.c: Generic user space atomic support.
+	* module/zpios/zpios.c: Register a basic compat ioctl handler for
+	32-bit user vs 64-bit kernel compatibility.  This is the default
+	build environment for all 64-bit SLES systems.  Additionally
+	replace the use of 'struct timespec' which uses longs internally
+	and is therefore different sizes on 32-bit vs 64-bit objects with
+	'struct zpios_timespec_t'.a
+	* config/kernel.m4: Check arch/default path when detecting kernel
+	objects under SLES.  We still preferentially use arch/arch if
+	available but if that fails it is acceptable to use default.
+	* config/kernel.m4: Remove LINUXINCLUDE from autoconf wrapper.
+	This breaks the 2.6.28+ kernels build system, all kernel build systems
+	at least post 2.6.16 will set this properly so we should not.
+	* lib/libspl/include/assert.h: Add ASSERTV macro to simplify removing
+	variables (the V in ASSERTV) which are only used in ASSERT().
+	Also revert all previously modified ASSERT()s to their original
+	definitions and use the ASSERTV macro to handle unused variables.
+	* module/zpios/zpios.c: Use spl device interfaces for portability.
+	* scripts/common.sh: The losetup -f option is unavailable for
+	SLES10 use the unused_loop_device() common function.  Additionally
+	LOSETUP is now used to portably reference the losetup binary.
+	* module/zfs/vdev_disk.c: Unused destroy_dirty_buffers arg removed.
+	* module/zfs/vdev_disk.c: BIO_RW_SYNC renamed to BIO_RW_SYNCIO.
+	* module/zfs/vdev_disk.c: open/close_bdev_excl() renamed to
+	open/close_bdev_exclusive().
+	* module/zfs/vdev_disk.c: Empty write barriers are supported as of
+	linux 2.6.24 and are now used to implement DKIOCFLUSHWRITECACHE.
+	* module/zfs/vdev_disk.c: The bi_end_io API changes make partial
+	IO's impossible handle this case cleanly.
+	* module/zfs/vdev_disk.c: BIO_RW_FAILFAST replaced with
+	BIO_RW_FAILFAST_{DEV|_TRANSPORT|_DRIVER}, use the legacy
+	BIO_RW_FAILFAST flag if it exists for now.
+	* module/zfs/dmu_objset.c, module/zfs/spa_history.c: Excessively
+	large stack frames (>2048) were detected in dmu_objset_snapshot()
+	and spa_history_log() and were reduced by allocating from the heap.
+
+	* Rebased to ZFS b117 from OpenSolaris:
+	* module/zfs/dmu.c: Update zerocopy patch to be consistent with
+	new flags arg passed to dmu_read().
+	* module/zpios/zpios.c: Update zpios to be aware of the new flags
+	argument available in dmu_read().  Additionally add a zpios command
+	line flag to set the DMU_READ_NO_PREFETCH flag for a test.
+	* module/zfs/include/sys/zfs_context.h: Wrap new sysevent includes
+	until sysevent or something like it is implemented.
+	* module/zfs/zfs_ioctl.c: Wrap all the ACL interfaces with HAVE_ZPL.
+	They are integrated with the vfs layer which is not yet supported.
+	* module/zcommon/zfs_prop.c: Export new quota related symbols.
+	* lib/libzfs/libzfs_util.c: Increase buffer size for nvlist which
+	is needed for large configurations.
+
+	* Bug fixes:
+	* lib/libspl/include/sys/zfs_debug.h: Removed duplicate file.
+	* lib/libspl/include/sys/isa_defs.h: Fixed missing macro definitions
+	for little endian and big endian.
+	* cmd/zpios/zpios_main.c: Pretty-up the zpios 'make check' output.
+	* module/zfs/vdev_disk.c: Honor spa_mode() when opening block devs.
+	* module/zfs/vdev_disk.c: Initial error handling added to
+	vdev_disk_io_done() to revalidate the media on EIO.
+	* lib/libzfs/libzfs_util.c: Fix an accidentally introduced formatting
+	issue in zfs_nicenum() output.
+	
+2009-07-02 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.4 - Use 'git log --no-merges' for full change log.
+
+	* : Generic distro friendly build system / packaging improvements
+	for RPM based distros including CHAOS, RHEL, Fedora, and SLES.
+
+	These changes bring the zfs-0.4.4 tree in to compliance with
+	the spl-0.4.4 packaging changes.  The bottom line is 2 source
+	rpms and 4 binary rpms will now be generated when creating
+	packages there will be:
+
+	zfs-<version>.src.rpm
+	- Fully rebuildable source rpm for libzfs and utils.
+	zfs-modules-<version>.src.rpm
+	- Fully rebuildable source rpm for kernel modules.
+
+	zfs-<version>.<arch>.rpm
+	- Binary rpm for libzfs and utils.  The utils in this package are
+	  compatible with all zfs-module rpms of the same version.
+	zfs-devel-<version>.<arch>.rpm
+	- Binary rpm containing headers for building against libzfs libraries.
+
+	zfs-modules-<verion>-<kernel>.arch.rpm
+	- Binary rpm containing the kernel modules for a specific kernel build.
+	  The package name contains the kernel version and you should have one
+	  of these packages installed to match every kernel on your system.
+	zfs-modules-devel-<verion>-<kernel>.arch.rpm
+	- Binary rpm containing development header and module symbols needed
+	  for building additional kernel modules which are dependent on the
+	  zfs module stack.
+
+	* : SLES9/10 distro support added: Several significant updates to
+	the build system were required to support this including:
+
+	- Autoconf macros updated to be aware of the standard install
+	locations for SLES kernel sources and build objects.  Additionally
+	changes were made to support multiple names for Module{s}.symvers.
+	- By default on SLES all user space builds are 32-bit even on
+	64-bit arches.  This means we need to be careful to pass -m64 in
+	the autoconf checks which probe the kernel.  Additionally, 
+	ioctl_compat handles still need to be added so 32-bit user
+	binarys can perform ioctls with the 64-bit kernel.
+
+	* : Powerpc64 support added:
+
+	- 64-bit user space atomic support for power64 was obtained from
+	an old version of OpenSolaris which offered minimal powerpc support.
+	The atomic support is not 100% fully implemented but it's a good
+	first step towards cleanly supporting the architecture.
+	- Added powerpc ISA type.
+	- Explicitly use signed char for portability.  On x86/x86_64
+	systems the default char type is signed, on ppc/ppc64 systems
+	the default char type is unsigned.
+	- Core target arch support for conditional compilation of SUBDIRs.
+	Required by libspl for its arch specific atomic implementations.
+
+	* COPYRIGHT: Readded accidentally dropped COPYRIGHT, it just
+	references the OPENSOLARIS.LICENSE which was still in the project.
+
+	* module/zfs/dmu_tx.c: Add EXPORT_SYMBOL(dmu_tx_callback_register).
+
+	* config/user-zlib.m4: Add basic zlib autoconf check for user space.
+
+2009-03-20 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.3 - Use 'git log --no-merges' for full change log.
+
+	* : Rebased to ZFS b108 from OpenSolaris
+
+	* configure.ac, *Makefile.am: Build system update.  This includes
+	resolving various build issues and adding support for the remaining
+	common build targets.  Available targets now include:
+
+	- make all        # Build everything
+	- make install    # Install everything
+	- make clean      # Clean up build products
+	- make distclean  # Clean up everything
+	- make dist       # Create package tarball
+	- make srpm       # Create package source RPM
+	- make rpm        # Create package binary RPMs
+	- make tags       # Create ctags and etags for everything
+
+	Extra care was taken to ensure that the source RPMs are fully
+	rebuildable against Fedora/RHEL/Chaos kernels.  To build binary
+	RPMs from the source RPM for your system simply run:
+
+	rpmbuild --rebuild zfs-x.y.z-1.src.rpm
+
+	This will produce two binary RPMs with correct 'requires'
+	dependencies for your kernel.  One will contain all zfs modules
+	and support utilities, the other is a devel package for compiling
+	additional kernel modules which are dependent on the zfs.
+
+	zfs-x.y.z-1_<kernel version>.x86_64.rpm
+	zfs-devel-x.y.2-1_<kernel version>.x86_64.rpm
+
+	* config/kernel.m4, config/Rules.am: Removed the build options
+	-Wno-unused -Wno-missing -Wno-unused -Wno-parentheses and
+	-Wno-unknown-pragmas.  All upstream warnings which were being
+	suppressed by these options are now handled in the matching
+	gcc-* topic branch.
+
+	* zpios: Various zpios and test infrastructure improvements.
+
+	* feature-commit-cb: New feature commit callbacks.
+
+	* : Various bug fixes which are more clearly detailed in the
+	git commit logs.  For a detailed summary of changes post version
+	0.4.2, check out the 'top' topic branch and view the commit logs.
+
+	git checkout top
+	git log --no-merges -53
+
+2009-02-05 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.2
+
+	* lib/libzfs/libzfs_util.c: Remove mknod() this is now handled by
+	by the SPL with an upcall even without GPL-only symbols.
+
+	* module/zfs/vdev_diskc: Updated linux vdev_disk interfaces to issue
+	multiple bios if needed due to the maximum request size being smaller
+	than the request size passed down from the spa.
+
+	* scripts/zpool-config/lo-*: Add loopback based test configs.
+
+2009-01-21 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.1
+
+	* : Rebased to ZFS b105 from OpenSolaris
+
+	* : Restructured project and build system to more closely
+	mirror the code organization used in OpenSolaris.  This
+	allows us minimize the changes to upstream source needed,
+	and allows concurrent user+kernel space builds of all components.
+
+2008-11-19 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.4.0
+
+	* : ZFS project migrated from Subversion which leveraged a 
+	quilt based patch stack to Git and a TopGit managed patch
+	stack.  The new method treats all patches as Git branches
+	which can be more easily shared for distributed development.
+	Consult the top level GIT file for detailed information on
+	how to properly develop for this package using Git+TopGit.
+
+2008-11-12 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.3.4
+
+	* zfs-07-create-dev-zfs.patch:
+	Ricardo M. Correia <[email protected]>
+	- Make libzfs create /dev/zfs if it doesn't exist.
+
+	* zfs-05-check-zvol-size.patch:
+	Ricardo M. Correia <[email protected]>
+	- Properly check zvol size under Linux.
+
+	* zfs-04-no-openat-fdopendir.patch:
+	Ricardo M. Correia <[email protected]>
+	- Do not use openat() and fdopendir() since they are not available
+	  on older systems.
+
+	* zfs-03-fix-bio-sync.patch:
+	Ricardo M. Correia <[email protected]>
+	- Fix memory corruption in RHEL4 due to synchronous IO becoming
+	  asynchronous.
+
+2008-11-06 Brian Behlendorf <[email protected]>
+
+	* zfs-02-zpios-fix-stuck-thread-memleak.patch:
+	Ricardo M. Correia <[email protected]>
+	- Fix stuck threads and memory leaks when errors occur while writing.
+
+	* zfs-01-zpios-arg-corruption.patch:
+	Ricardo M. Correia <[email protected]>
+	- Fix zpios cmd line argument corruption problem.
+
+	* zfs-00-minor-fixes.patch: 
+	Ricardo M. Correia <[email protected]>
+	- Minor build system improvements
+	- Minor script improvements
+	- Create a full copy and not a link tree with quilt
+	- ZPIOS_MAJOR changed from 231 to 232
+	- BIO_RW_BARRIER flag removed from IO request
+
+2008-06-30 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.3.3
+
+	* : Minor script updates and tweaks to be compatible with
+	the latest version of the SPL.
+
+2008-06-13 Brian Behlendorf <[email protected]>
+
+	* vdev_disk.diff: Replace vdev_disk implementation which was
+	based on the kmalloc'ed logical address space with a version
+	which works with vmalloc'ed memory in the virtual address space.
+	This was done to support the new SPL slab implementation which
+	is based on virtual addresses to avoid the need for contigeously
+	allocated memory.
+
+2008-06-05 Brian Behlendorf <[email protected]>
+
+	* arc-vm-integration.diff: Reduce maximum default arc memory 
+	usage to 1/4 of total system memory.  Because all the bulk data
+	is still allocated on the slab memory fragmentation is a serious
+	concern.  To address this in the short term we simply need to
+	leave lots of free memory.
+
+	* fix-stack.diff: First step towards reducing stack usage so
+	we can run the full ZFS stack using a stock kernel.
+
+2008-06-04 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.3.2
+
+	* : Extensive improvements to the build system to detect kernel
+	API changes so we can flexibly build with a wider range of kernel
+	versions.  The code has now been testing with the 2.6.18-32chaos
+	and 2.6.25.3-18.fc9 kernels, however we should also be compatible
+	with other kernels in the range of 2.6.18-2.6.25.  The only
+	remaining issue preventing us from running with a stock 
+	kernel is ZFS stack usage.
+
+2008-05-21 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.3.1
+
+	* : License headers including URCL added for release.
+
+2008-05-21 Brian Behlendorf <[email protected]>
+
+	* : Tag zfs-0.3.0
+
+	* configure.ac: Improved autotools support and configurable debug.
+
+2008-05-15 Brian Behlendorf <[email protected]>
+
+	* : Updating original ZFS sources to build 89 which
+	includes the new write throttling changes plus support
+	for using ZFS as your root device.  Neither of which
+	will work exactly right without some more work but this
+	gets us much closers to the latest source.
+	
+
+2008-02-28 Brian Behlendorf <[email protected]>
+
+	* : First attempt based on SPL module and zfs-lustre sources