ChangeLog

   1 2010-05-21 Brian Behlendorf <behlendorf1@llnl.gov>
   2
   3         * : Tag spl-0.4.9
   4
   5         * : Build system improvements:
   6         - Added support for the 'make -s' silent build option.
   7         - Allow spl_config.h to be included by dependent packages.
   8         - Minor spec file updates.
   9
  10         * AUTHORS, COPYING, DISCLAIMER, and INSTALL: Updated.
  11
  12         * *.c, *.h, *.sh, AUTHORS, COPYING, DISCLAIMER, and INSTALL:
  13         Added standard header to source files which includes the copyright,
  14         license, and author information.  Additionally, updated the listed
  15         top level files to the latest versions.
  16
  17         * module/spl/spl-debug.c: Debugging defaults adjusted.  The default
  18         log dump path is now /tmp/spl-log and panic on SBUG has been disabled.
  19
  20         * include/sys/processor.h, include/sys/systm.h, include/sys/types.h:
  21         Added 3 missing typedefs processorid_t, pc_t, and index_t.
  22
  23         * include/sys/console.h: Added support for console_* functions().
  24
  25         * module/spl/spl-time.c: Updated gethrtime() to use the function
  26         do_posix_clock_monotonic_gettime() as described in the comment.
  27
  28         * module/spl/spl-condvar.c: Added cv_wait_interruptible() function
  29         as an extension to the existing condition variable ABI to enable
  30         sleeping threads a way to cleanly handle signals in the kernel.
  31
  32         * module/spl/spl-debug.c: Dump log from current process as required.
  33
  34         * module/spl/spl-taskq.c: Assume TQ_SLEEP in taskq_dispatch() if
  35         the caller does not specify, this is the Solaris default.
  36
  37         * module/spl/spl-vnode.c: Extend the vn_rdwr() implementation to
  38         correctly handle the FAPPEND option.
  39
  40         * module/spl/spl-generic.c, module/spl/spl-vnode.c: Update
  41         vn_set_pwd() to allow a kernal address as filename.  This turns
  42         out to be critical because spl_setup()->The vn_set_pwd("/") which
  43         is called at module load time was failing with -EFAULT.
  44
  45         * include/sys/rwlock.h: Disable rw_tryupgrade() for kernels built
  46         without CONFIG_RWSEM_GENERIC_SPINLOCK defined.  The existing
  47         implementation is not safe in this case and needs to be replaced
  48         with a correct native per-arch implementation.
  49
  50         * module/spl/spl-kmem.c: Reduce maximum kmem based slab size.
  51         Allowing MAX_ORDER-1 sized memory allocations while the system
  52         is low on memory has been observed to result in deadlocks.  Callers
  53         should not be using the slab in this way but we should still handle
  54         the case more cleanly.
  55
  56         * module/spl/spl-kmem.c: Remove kmem_set_warning() interface and
  57         replace it with KM_NODEBUG flag which can be specific per allocation.
  58
  59         * module/splat/splat-kmem.c: Tweaked what the idea of a large object
  60         is for the kmem:slab_large regression tests because failures were
  61         observed for very large kmem objects in newer kernels.
  62
  63         * include/sys/rwlock.h, module/splat/splat-rwlock.c: The rwlock
  64         implementation was simplified because failures were being observed
  65         when using the non-generic implementation.  This change leverages
  66         the rwsem_is_locked() function instead of directly consulting the
  67         rwsem internals which differ per-arch and per-kernel-version.
  68
  69 2010-03-11 Brian Behlendorf <behlendorf1@llnl.gov>
  70
  71         * : Tag spl-0.4.8
  72
  73         * : Build system improvements:
  74         - Remove Module.markers and Module.symver{s} in clean target.
  75         - Improved kernel source detection when none specified.
  76         - Fix RPM definitions for the unknown distro/installation.
  77
  78         * config/spl-build.m4: Linux 2.6.32 compat, SPL_AC_5ARGS_PROC_HANDLER
  79           macro added to handle updated proc_handler () API.
  80
  81         * module/spl/spl-err.c: Fix panic() string, which was being used as a
  82           format string, instead of an already-formatted string.
  83
  84         * /module/spl/spl-taskq.c: Optimize lowest outstanding taskqid
  85           calculation in taskq_lowest_id().  The motivation for this change
  86           was that I was observing as much as 10% of the total CPU time go
  87           to waiting on the tq->tq_lock when the pending list was long.
  88
  89         * module/spl/spl-kmem.c: Strip __GFP_ZERO from kmalloc it is not
  90           available for older kernels.
  91
  92         * module/spl/spl-proc.c: Add skc_flags and full header to
  93           /proc/spl/kmem/slab
  94
  95         * module/spl/spl-generic.c: Correctly handle division on 32-bit RHEL5
  96           systems by returning dividend.
  97
  98         * include/sys/rwlock.h: When using x86 specific rwsem correctly
  99           intepret rwsem->count.  Additionally check for changed guard macro
 100           in 2.6.28+ for rwsem implementation
 101
 102         * module/splat/splat-vnode.c, module/splat/splat-kmem.c,
 103           module/splat/splat-taskq.c: Several new tests were added to the
 104           test suite and various bug fixes.
 105
 106         * include/asm/atomic_compat.h: Atomic64 compatibility for 32-bit
 107           systems without kernel support.
 108
 109         * .gitignore: Added .gitignore files.
 110
 111 2009-11-20 Brian Behlendorf <behlendorf1@llnl.gov>
 112
 113         * : Tag spl-0.4.7
 114
 115         * config/spl-build.m4: Linux 2.6.31 compat, SPL_AC_2ARGS_SET_FS_PWD
 116         macro updated to explicitly include linux/fs_struct.h which was
 117         dropped from linux/sched.h.
 118
 119         * include/linux/mm_compat.h: Linux 2.6.31 compat, use the macros
 120         min_wmark_pages, low_wmark_pages, and high_wmark_pages which were
 121         introduced.  For older kernels a compability macro is used.
 122
 123         * include/sys/kmem.h: Linux 2.6.31 compat, the __GFP_NOFAIL flag
 124         should no longer be used and it may disappear from the kernel at any
 125         time.  To handle this I have simply added *_nofail wrappers in the
 126         kmem implementation which perform the retry for non-atomic allocations.
 127
 128         * module/spl/spl-kmem.c: Linux 2.6.31 compat, kmem cache alignment
 129         fixes and cleanup.  Always perform allocations for the kmem cache
 130         using __get_free_pages() or __vmalloc() to ensure the returned
 131         memory is page aligned.  Also introduce helper functions which use
 132         P2ROUNDUP_TYPE instead of P2ROUNDUP force all types to be explicit.
 133
 134         * include/sys/mutex.h: Add mutex_enter_nested() as wrapper for
 135         mutex_lock_nested() to permit integration with the lock checker.
 136
 137         * include/sys/mutex.h: Always use the generic mutex_destroy().
 138
 139         * Makefile.am: Ensure *.order and *.markers build products are
 140         removed by distclean rule.
 141
 142 2009-11-02 Brian Behlendorf <behlendorf1@llnl.gov>
 143
 144         * : Tag spl-0.4.6
 145
 146         * config/spl-build.m4: Cleanup --enable-debug-* configure options.
 147         --enable-debug=<default no>  generic debug support.
 148         --enable-debug-kmem=<default yes> basic kmem and slab accounting.
 149         --enable-debug-kmem-tracking=<default no> detailed kmem tracking.
 150         --enable-debug-kstat removed option support always enabled.
 151         --enable-debug-callb removed option which never did anything.
 152
 153         * module/spl/spl-atomic.c: Reimplemented atomic functions by
 154         layering them on top of the Linux atomic functions.  This improves
 155         performance by removing the need for a global spinlock.
 156
 157         * module/spl/spl-debug.c: Rebase cmn_err on vcmn_err.  Handle the
 158         case where the message contains a leading ! which means only send
 159         it to syslog.  And suppress warnings for messages which do not end
 160         in a '\n'.
 161
 162         * module/splat/splat-ctl.c: Update to use kobject_set_name() for
 163         increased portability.
 164
 165         * module/spl/spl-generic.c: Set cwd to '/' for the task during
 166         module load for SPL dependent modules.  Under Solaris this is
 167         the expected behavior, on a Linux system your cwd remains set
 168         to whatever the tasks cwd was when loading a module.
 169
 170         * module/spl/spl-mutex.c: Reimplemented mutexs for improved
 171         performance and cleaner integration with the Linux kernels built
 172         in lock analyzer.  As of 2.6.29 based kernels adaptive mutexs
 173         are supported, for these newer kernels task_curr() does not need
 174         to be exported.  Finally, DEBUG_MUTEX support was dropped in
 175         favor of more detailed kernel profiling which is now available.
 176
 177         * module/spl/spl-rwlock.c: Reimplemented rwlocks for improved
 178         performance and cleaner integration with the Linux kernels built
 179         in lock analyzer.  Additionally, the rwlock regression tests were
 180         improved to help validate correctness.
 181
 182         * spl-modules.spec.in: Various spec file tweaks for the supported
 183         distros: RHEL5, RHEL6, SLES10, SLES11, Chaos4, Fedora 11.
 184
 185 2009-08-04 Brian Behlendorf <behlendorf1@llnl.gov>
 186
 187         * : Tag spl-0.4.5
 188
 189         * FC11 and SLES11 support: This includes all compatibility changes
 190         to support 2.6.29 based kernels and the required build system
 191         improvements.
 192         * module/spl/spl-module.c: Register a basic compat ioctl handler
 193         for 32-bit user vs 64-bit kernel compatibility.  This is the default
 194         build environment for all 64-bit SLES systems.
 195         * config/spl-build.m4: Check arch/default path when detecting kernel
 196         objects under SLES.  We still preferentially use arch/arch if
 197         available but if that fails it is acceptable to use default.
 198         * module/spl/spl-vnode.: Use HAVE_PATH_IN_NAMEIDATA compat macros
 199         for maximum kernel compatibility.
 200         * config/spl-build.m4: Remove LINUXINCLUDE from autoconf wrapper.
 201         This breaks the 2.6.28+ kernels build system, all kernel build systems
 202         at least post 2.6.16 will set this properly so we should not.
 203         * include/sys/vmsystm.h, module/spl/spl-kmem.c: Perferentially use the
 204         global_page_state() API when your kernel supports the required enums.
 205         * include/sys/debug.h: Add ASSERTV macro to simplify removing
 206         variables (the V in ASSERTV) which are only used in ASSERT().
 207         * include/sys/debug.h: Disable stack overflow checking by default
 208         when build with --enable-debug, modern kernels now provide this.
 209         * patches/fc11-spl-export-symbols.patch: Recommended missing symbols
 210         patch for FC11.  This is not required for correct functionality but
 211         it is recommended for individuals who are already patching the kernel.
 212
 213         * Additional Solaris API emulation:
 214         * include/sys/taskq.h: Add basic taskq support for the flag
 215         TASKQ_THREADS_CPU_PCT which is used to scale the number of threads
 216         based on the number of online CPUs.
 217         * include/sys/file.hi, module/spl/spl-generic.c: Add support for
 218         fake ioctls which originate from the kernel instead of user space.
 219         * include/sys/acl.h: Add ACE_ALL_PERMS ACL definition.
 220         * include/sys/cred.h, module/splat/splat-cred.c: Add basic credential
 221         support and splat regression tests.
 222
 223         * Bug fixes:
 224         * include/sys/isa_defs.h: Add more endianess paranoia.
 225         * module/spl/spl-time.c: Integer overflow after ~164 days.
 226         * include/sys/debug.h: NULL dereference by tcd_for_each().
 227         * module/splat/splat-kmem.c: Allow kmem or vmem based slabs for
 228         slab_lock and slab_overcommit tests.  This may still be an issue on
 229         32-bit systems due to the small virtual address space.
 230         * module/spl/spl-module.c: Positive Solaris ioctl return codes are
 231         need to be negated for use by libc to ensure errno is set correctly.
 232
 233 2009-07-02 Brian Behlendorf <behlendorf1@llnl.gov>
 234
 235         * : Tag spl-0.4.4
 236
 237         * : Generic distro friendly build system / packaging improvements
 238         for rpm based distros including CHAOS, RHEL, Fedora, and SLES.
 239
 240         spl-<version>.src.rpm
 241         - Fully rebuildable source rpm for utils.
 242         spl-modules-<version>.src.rpm
 243         - Fully rebuildable source rpm for kernel modules.
 244
 245         spl-<version>.<arch>.rpm
 246         - Binary rpm for utils.  The utils in this package are compatible
 247         with all spl-module rpms of the same version.
 248
 249         spl-modules-<verion>-<kernel>.arch.rpm
 250         - Binary rpm containing the kernel modules for a specific kernel build.
 251           The package name contains the kernel version and you should have one
 252           of these packages installed to match every kernel on your system.
 253         spl-modules-devel-<verion>-<kernel>.arch.rpm
 254         - Binary rpm containing development header and module symbols needed
 255           for building additional kernel modules which are dependent on the
 256           spl module.
 257
 258         * : Added SLES10 support.  This includes all compatibility
 259         changes to support 2.6.16 based kernels and the required
 260         build system improvements.
 261
 262         * : Build System changes for SLES10:
 263         - Exclude -obj when detecting installed kernel source.
 264         - Detect -obj directory for out of tree kernel builds.
 265         - Allow kernel build system to set CC to ensure -m64 is set properly.
 266           This is an issue on 64-bit SLES systems which by default always
 267           build 32-bit binaries (unlike RHEL/Fedora which default to 64-bit)
 268
 269         * : Configure Checks added for SLES10:
 270         - div64_64() renamed to div64_u64() as of 2.6.26.
 271         - global_page_state() fuction was introduced in 2.6.18 kernels.
 272           The earlier 2.6.16 based SLES10 must not try and use it,
 273           thankfully get_zone_counts() is still available.
 274         - monotonic_clock() is unavailable __gethrtime() must perform the
 275           HZ division as an 'unsigned long long' because the SPL only
 276           implements __udivdi3(), and not __divdi3() for 'long long'
 277           division on 32-bit arches.
 278         - mutex_lock_nested() was introduced as part of the mutex
 279           validator in 2.6.18, when it is unavailable it is safe to
 280           fallback to using a plain mutex_lock().
 281         - SLES specific API change to vfs_unlink() and vfs_rename() which
 282           added a 'struct vfsmount *' argument.  This was for something
 283           called the linux-security-module, but it appears that it was
 284           never adopted upstream.
 285         - spl_device_create() correctly mapped to class_device_create()
 286           for 2.6.13 to 2.6.17 based kernels, this is the preferred API.
 287         - Prior to 2.6.17 there were no *_pgdat helper functions in
 288           mm/mmzone.c.  Instead for_each_zone() operated directly on
 289           pgdat_list which may or may not have been exported depending on
 290           how your kernel was compiled.  A configure check was added to
 291           determine if you have the helpers or not, and if the needed
 292           symbols are exported.  If they are not exported then they are
 293           dynamically aquired at runtime by kallsyms_lookup_name().
 294
 295         * : Packaging changes for SLES10
 296         - Properly honor --prefix in build system and rpm spec file.
 297         - Add '--define require_kdir' to spec file to support building
 298           rpms against kernel sources installed in non-default locations.
 299         - Add '--define require_kobj' to spec file to support building
 300           rpms against kernel object installed in non-default locations.
 301         - Stop suppressing errors in autogen.sh script.
 302         - Improved logic to detect missing kernel objects when they are
 303           not located with the source.  This is the common case for SLES
 304           as well as in-tree chaos kernel builds and is done to simply
 305           support for multiple arches.
 306         - Moved spl-devel build products to /usr/src/spl-<version>, a
 307           spl symlink is created to reference the last installed version.
 308         - Allow checking for exported symbols in both Module.symvers
 309           and Module.symvers.  My stock SLES kernel ships an objects
 310           directory with Module.symvers, yet produces a Module.symvers
 311           in the local build directory.
 312
 313         * : Added powerpc64 support.
 314         - Enable builds for powerpc64 ISA type.
 315         - Add DIV_ROUND_UP and roundup macros if unavailable.
 316         - Cast 64-bit values for %lld format string to (long long) to
 317           quiet compile warning.
 318
 319         * module/splat/splat-ctl.c: Proper ioctl() 32/64-bit binary
 320           compatibility.  We need to ensure the ioctl data itself is always
 321           packed the same for 32/64-bit binaries.  Additionally, the correct
 322           thing to do is encode this size in bytes as part of the command
 323           using _IOC_SIZE().
 324
 325         * modules/spl/spl-kmem.c: Fixed a long standing bug in the debug
 326           tracing.  The tcd_for_each() macro expected a NULL to terminate
 327           the trace_data[i] array but this was only ever true due to luck.
 328           All trace_data[] iterators are now properly capped by TCD_TYPE_MAX.
 329
 330         * modules/spl/spl-kmem.c: To simplify debugging all symbols aquired
 331           dynamically using spl_kallsyms_lookup_name() are initially poisoned
 332           with SYMBOL_POISON.
 333
 334 2009-03-20 Brian Behlendorf <behlendorf1@llnl.gov>
 335
 336         * : Tag spl-0.4.3
 337
 338         * configure.ac, *Makefile.am: Build system update.  This includes
 339         resolving various build issues and adding support for the remaining
 340         common build targets.  Available targets now include:
 341
 342         - make all        # Build everything
 343         - make install    # Install everything
 344         - make clean      # Clean up build products
 345         - make distclean  # Clean up everything
 346         - make dist       # Create package tarball
 347         - make srpm       # Create package source RPM
 348         - make rpm        # Create package binary RPMs
 349         - make tags       # Create ctags and etags for everything
 350
 351         Extra care was taken to ensure that the source RPMs are fully
 352         rebuildable against Fedora/RHEL/Chaos kernels.  To build binary
 353         RPMs from the source RPM for your system simply run:
 354
 355         rpmbuild --rebuild spl-x.y.z-1.src.rpm
 356
 357         This will produce two binary RPMs with correct 'requires'
 358         dependencies for your kernel.  One will contain all zpl modules
 359         and support utilities, the other is a devel package for compiling
 360         additional kernel modules which are dependent on the spl.
 361
 362         spl-x.y.z-1_<kernel version>.x86_64.rpm
 363         spl-devel-x.y.2-1_<kernel version>.x86_64.rpm
 364
 365         * : FC10 (linux-2.6.27.19) and i686 compatibility update.  The
 366         list of support platforms has been extended to include FC10
 367         systems and x86 architectures.  It should be noted that kernels
 368         older the 2.6.27.19 should work but have not have not been tested.
 369
 370         * configure.ac: Fix build issue preventing spl_config.h from being
 371         cleanly included by dependent packages.
 372
 373         * module/spl/spl-taskq.c: Fix taskq_wait() not waiting bug.
 374
 375         * module/spl/spl-xdr.c: Add XDR implementation provided by Ricardo
 376         Correia from Sun.
 377
 378         * module/spl/spl-kmem.c: Linux VM integration cleanup.
 379
 380         * module/spl/spl-kmem.c: Slab cache improvements and fixes.
 381
 382         * modules/splat/*: Include additional SPLAT regression tests.
 383
 384         * : Various bug fixes are more clearly detailed in the git
 385         commit logs.  For a detailed summary of changes post version
 386         0.4.2 check the git commit logs.
 387
 388         git log -35
 389
 390 2009-02-05 Brian Behlendorf <behlendorf1@llnl.gov>
 391
 392         * : Tag spl-0.4.2
 393
 394         * module/spl/spl-kmem.c include/sys/kmem.h: Slab cache improvements:
 395           - Implement kmem cache alignment.
 396           - Implement slab ageing.
 397           - Optimized slab packing algorithm.
 398           - Fixed deadlock due to calling call kv_free() under the skc_lock.
 399           - Added additional SPLAT test cases
 400           - Performance optimizations
 401
 402         * module/spl/spl-kmem.c include/sys/kmem.h: Linux VM integration.
 403         The Solaris global VM symbols minfree, desfree, lotsfree, needfree,
 404         swapfs_minfree, swapfs_reserve, availrmem, freemem, and physmem are
 405         now available and loosely integrating with the Linux VM.  Some
 406         tuning will undoubtably be needed and these tunables are available
 407         in /proc/sys/kernel/spl/vm/* for this very reason.
 408
 409         * config/spl-build.m4: New configure checks needed when building
 410         against 2.6.27+ kernels.  More work is needed here.
 411
 412         * : Minor cleanup see the 'git log' for full details.
 413
 414 2009-01-21 Brian Behlendorf <behlendorf1@llnl.gov>
 415
 416         * : Tag spl-0.4.1
 417
 418         * : Implement ksid_*, ddi_strto*, and system taskq functionality.
 419         In addition, several other small Solaris compatibility changes
 420         were made, see the 'git log' for full details.
 421
 422 2008-11-26 Brian Behlendorf <behlendorf1@llnl.gov>
 423
 424         * : Tag spl-0.4.0 (Development now done with Git)
 425
 426         * : Imported SPL SVN repo in to Git Repo for core development.
 427
 428 2008-11-26 Brian Behlendorf <behlendorf1@llnl.gov>
 429
 430         * : Tag spl-0.3.5
 431
 432         * : Include META file support.
 433
 434 2008-11-05 Jim Garlick <garlick@llnl.gov>
 435
 436         * : Add autogen.sh products.
 437
 438         * configure.ac : Use AC_CONFIG_AUX_DIR to put autograph products
 439         in ./auotconf.
 440
 441         * autogen.sh : Use --copy to avoid symlinks, remove error
 442         redirection, run aclocal before libtoolize.
 443
 444 2008-11-13 Brian Behlendorf <behlendorf1@llnl.gov>
 445
 446         * include/sys/sunddi.h, modules/spl/spl-module.c : Removed default
 447         udev support from sunddi implementation because it uses GPL-only
 448         symbols.  This support is optionally available for SPL consumers
 449         if they define HAVE_GPL_ONLY_SYMBOLS and license their module as
 450         GPL using the MODULE_LICENSE("GPL") macro.
 451
 452 2008-11-05 Brian Behlendorf <behlendorf1@llnl.gov>
 453
 454         * : Tag spl-0.3.4
 455
 456         * : Coverity clean.
 457
 458         * : Patches from Ricardo M. Correia <Ricardo.M.Correia@sun.com>
 459         applied with minor revisions:
 460
 461                 spl-00-rm-gpl-symbol-notifier_chain.patch
 462                 spl-01-rm-gpl-symbol-set_cpus_allowed.patch
 463                 spl-02-rm-gpl-symbols-device.patch
 464                 spl-03-rm-gpl-symbol-ktime_get_ts.patch
 465                 spl-04-fix-taskq-spinlock-lockup.patch
 466                 spl-05-div64.patch
 467                 spl-06-atomic64.patch
 468                 spl-07-kmem-cleanup.patch
 469                 spl-08-km-sleep-nofail.patch
 470                 spl-09-fix-kmem-track-oops.patch
 471                 spl-10-fix-assert-verify-ndebug.patch
 472
 473 2008-06-30 Brian Behlendorf <behlendorf1@llnl.gov>
 474
 475         * : Tag spl-0.3.3
 476
 477         * : modules/sys/kmem-slab.c : Refined SPL slab to include
 478         per-cpu caches, removed internal hash, other general
 479         performance improvements.  Much work remain but it's pretty
 480         good for an initial implementation.
 481
 482 2008-06-13 Brian Behlendorf <behlendorf1@llnl.gov>
 483
 484         * : modules/sys/kmem-slab.c : Re-implemented the slab to no
 485         longer be based on the linux slab but to be it's own complete
 486         implementation.  The new slab behaves much more like the
 487         Solaris slab than the Linux slab.
 488
 489 2008-06-04 Brian Behlendorf <behlendorf1@llnl.gov>
 490
 491         * : Tag spl-0.3.2
 492
 493         * : Extensive improvements to the build system to detect kernel
 494         API changes so we can flexibly build with a wider range of kernel
 495         versions.  The code has now been testing with the 2.6.18-32chaos
 496         and 2.6.25.3-18.fc9 kernels, however we should also be compatible
 497         with other kernels in the range of 2.6.18-2.6.25.
 498
 499 2008-05-25 Brian Behlendorf <behlendorf1@llnl.gov>
 500
 501         * configure.ac, autoconf/* : Initial pass at resolving
 502         API changes introduced by kernels newer than 2.6.18.
 503
 504 2008-05-21 Brian Behlendorf <behlendorf1@llnl.gov>
 505
 506         * : Tag spl-0.3.1
 507
 508         * : License headers including URCL added for release.
 509
 510 2008-05-21 Brian Behlendorf <behlendorf1@llnl.gov>
 511
 512         * : Tag spl-0.3.0
 513
 514         * configure.ac: Improved autotools support.
 515
 516 2008-04-26 Brian Behlendorf <behlendorf1@llnl.gov>
 517
 518         * include/sys/mutex.h : Implemented a close approximation
 519         of adaptive mutexes.  These changes however required me to
 520         export a new symbol from the kernel proper 'task_curr()'
 521         which means we are now dependant on a patched kernel.
 522
 523 2008-04-24 Brian Behlendorf <behlendorf1@llnl.gov>
 524
 525         * : Tag spl-0.2.1
 526
 527         * modules/spl/spl-proc.c : Add /proc/sys/spl/version.
 528
 529 2008-04-24 Herb Wartens <wartens2@llnl.gov>
 530
 531         * include/sys/kmem.h : Make sure that when calling __vmem_alloc
 532         that we do not have __GFP_ZERO set.  Once the memory is allocated
 533         then zero out the memory if __GFP_ZERO is passed to
 534         __vmem_alloc.
 535
 536 2008-04-16 Herb Wartens <wartens2@llnl.gov>
 537
 538         * modules/spl/spl-kmem.c : Make sure to disable interrupts
 539         when necessary to avoid deadlocks.  We were seeing the deadlock
 540         when calling kmem_cache_generic_constructor() and then an interrupt
 541         forced us to end up calling kmem_cache_generic_destructor()
 542         which caused our deadlock.
 543
 544 2008-02-26 Brian Behlendorf <behlendorf1@llnl.gov>
 545
 546         : Initial commit of the solaris porting layer (spl).  Included
 547         in addition to the source is an initial autoconf / configure
 548         style build system.