Commit Graph

2112 Commits

Author SHA1 Message Date
Brian Behlendorf 9974a98a5d Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2010-03-08 13:48:15 -08:00
Brian Behlendorf 5f51cdd50a Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2010-03-08 13:48:02 -08:00
Brian Behlendorf 6dffc18479 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2010-03-08 13:47:59 -08:00
Brian Behlendorf 3d7cfde000 Remove Module.markers and Module.symver{s} in clean target
Split 'modules' and 'clean' Makefile targets to allow us to
cleanly remove the Module.* build products with a 'make clean'.
2010-03-08 13:45:51 -08:00
Brian Behlendorf ed3451bd03 Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch 2010-03-08 10:51:47 -08:00
Brian Behlendorf 5f863d5936 Merge branch 'linux-have-sysevent' into refs/top-bases/linux-zfs-branch 2010-03-08 10:51:39 -08:00
Brian Behlendorf df688225a3 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2010-03-08 10:51:37 -08:00
Brian Behlendorf 4dbd1e59e5 Configure checks for kernel build options incompatible with the license
Changes for linux-kernel-disk topic branch, see commit fd75782.
2010-03-08 10:47:55 -08:00
Brian Behlendorf 7121867aea Configure checks for kernel build options incompatible with the license
Changes for linux-kernel-module topic branch, see commit fd75782.
2010-03-08 10:45:19 -08:00
Brian Behlendorf 6037f5f124 Merge commit 'refs/top-bases/linux-kernel-mem' into linux-kernel-mem 2010-01-08 11:40:01 -08:00
Brian Behlendorf e4a4e686cd Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2010-01-08 11:39:56 -08:00
Brian Behlendorf 237341f2ce Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2010-01-08 11:39:52 -08:00
Brian Behlendorf 39d8b611e3 Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2010-01-08 11:39:52 -08:00
Brian Behlendorf 63a3d1f7b9 Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2010-01-08 11:39:35 -08:00
Brian Behlendorf 889f0e5e30 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2010-01-08 11:39:32 -08:00
Brian Behlendorf 303d9f010d Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-01-08 11:39:31 -08:00
Brian Behlendorf 710e779a08 Merge commit 'refs/top-bases/feature-pthreads' into feature-pthreads 2010-01-08 11:39:30 -08:00
Brian Behlendorf a240c39095 Merge commit 'refs/top-bases/feature-commit-cb' into feature-commit-cb 2010-01-08 11:39:29 -08:00
Brian Behlendorf eaf2e3231c Merge branch 'feature-zap-cursor-to-key' into refs/top-bases/feature-branch 2010-01-08 11:39:28 -08:00
Brian Behlendorf ee3aa7773b Merge commit 'refs/top-bases/feature-zap-cursor-to-key' into feature-zap-cursor-to-key 2010-01-08 11:39:28 -08:00
Brian Behlendorf 6cb71e1dec Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-01-08 11:39:14 -08:00
Brian Behlendorf e6f83f6a79 Merge commit 'refs/top-bases/gcc-ident-pragmas' into gcc-ident-pragmas 2010-01-08 11:39:11 -08:00
Brian Behlendorf 69804965e9 Merge commit 'refs/top-bases/gcc-c90' into gcc-c90 2010-01-08 11:39:00 -08:00
Brian Behlendorf e69572c1b5 Merge branch 'gcc-c90' into refs/top-bases/gcc-branch 2010-01-08 11:39:00 -08:00
Brian Behlendorf 4cd8e49a69 Add .gitignore files to exclude build products 2010-01-08 11:35:17 -08:00
Brian Behlendorf 821cec7046 Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch 2009-12-23 14:50:47 -08:00
Brian Behlendorf 9345a0c1a0 Using autoconf check define fmode_t typedef if undefined. 2009-12-23 14:45:04 -08:00
Brian Behlendorf 25ecf0dd97 Merge commit 'refs/top-bases/linux-kernel-mem' into linux-kernel-mem 2009-12-18 14:32:05 -08:00
Brian Behlendorf 05952b960d Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2009-12-18 14:31:58 -08:00
Brian Behlendorf 08571cee27 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2009-12-18 14:31:51 -08:00
Brian Behlendorf 5b0a1c06d5 Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2009-12-18 14:31:51 -08:00
Brian Behlendorf fcdc7ae52d Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2009-12-18 14:31:30 -08:00
Brian Behlendorf 8ffe347acc Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2009-12-18 14:31:23 -08:00
Brian Behlendorf 93b5403a64 Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2009-12-18 14:31:22 -08:00
Brian Behlendorf 1a36b0ada1 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2009-12-18 14:31:22 -08:00
Brian Behlendorf b58747a2e2 Merge branch 'fix-stack' into refs/top-bases/fix-branch 2009-12-18 14:31:21 -08:00
Brian Behlendorf 70ddc1393f 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.
As a quick simple way to resolve this I'm preventing the inlining of
certain functions which gcc will inline here because this is the only
place they are called.  Futher analysis of this function should be
performed to futher reduce its stack usage.
2009-12-18 14:22:02 -08:00
Brian Behlendorf 7b8fbda25b Merge commit 'refs/top-bases/linux-kernel-mem' into linux-kernel-mem 2009-12-11 12:08:13 -08:00
Brian Behlendorf f73c310efd Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch 2009-12-11 12:08:08 -08:00
Brian Behlendorf 4e7da53a39 Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2009-12-11 12:08:06 -08:00
Brian Behlendorf 57e0171065 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2009-12-11 12:07:58 -08:00
Brian Behlendorf 8bc41ddf2e Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2009-12-11 12:07:58 -08:00
Brian Behlendorf 2b8880572a Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2009-12-11 12:07:31 -08:00
Brian Behlendorf 52fbfecea5 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2009-12-11 12:07:26 -08:00
Brian Behlendorf acd798cfd4 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2009-12-11 12:07:23 -08:00
Brian Behlendorf f8d093f69b Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2009-12-11 12:07:23 -08:00
Brian Behlendorf b76d12a644 Merge branch 'gcc-64bit-constants' into refs/top-bases/gcc-branch 2009-12-11 12:07:22 -08:00
Brian Behlendorf f76a6daca5 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.
2009-12-11 12:02:45 -08:00
Brian Behlendorf 0dad9b2f9a Adding missed * in debug ASSERT. 2009-12-11 12:02:05 -08:00
Brian Behlendorf 8f1eb1049b Use MAXOFFSET_T instead of SPEC_MAXOFFSET_T for 32-bit arch. 2009-12-11 12:01:16 -08:00
Brian Behlendorf ba7ccf8ccd Cast to unsigned long long for 32-bit arches 2009-12-11 11:41:04 -08:00
Brian Behlendorf 45a5551a0e Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch
Conflicts:

	module/zfs/zfs_ioctl.c
2009-11-20 12:11:23 -08:00
Brian Behlendorf fb1b00e9f4 Linux ZVOL implementation; kernel-side changes
At last a useful user space interface for the Linux ZFS port arrives.
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.

What follows in a somewhat detailed list of changes includes in this
commit to make ZVOL's possible.  A few other issues were addressed in
the context of these changes which will also be mentioned.

* Added module/zfs/zvol.c which is based off the original Solaris ZVOL
implementation but rewritten to intergrate with the Linux block device
APIs.  The basic design remains the similar in Linux with the major
change being request processing.  Request processing is handled by
registering a request function which the elevator calls once all request
merges is finished and the elevator unplugs.  This function is called
under a spin lock and the request structure is passed to the block driver
to be queued for IO.  The elevator must be notified asyncronously once
the request completes or fails with an error.  This allows us the block
driver a chance to handle many request concurrently.  For the ZVOL we
maintain a taskq with a service thread per core.  As requests are delivered
by the elevator each request is dispatched to the taskq.  The task queue
handles each request with a write or read helper function which basically
copies the request data in to our out of the DMU object.  Writes single
completion as soon as the DMU has the data unless they are marked sync.
Reads are all handled syncronously however the elevator will merge many
small reads in to a large read before it submitting the request.

* Cachine is worth specifically mentioning.  Because both the Linux VFS
and the ZFS ARC both want to fully manage the cache we unfortunately
end up with two caches.  This means our memory foot print is larger
than otherwise expected, and it means we have an extra copy between
the caches, but it does not impact correctness.  All syncs are barrior
requests I believe are handled correctly.  Longer term there is lots of
room for improvement here but it will require fairly extensive changes
to either the Linux VFS and VM layer, or additional DMU interfaces to
handle managing buffer not directly allocated by the ARC.

* Added module/zfs/include/sys/blkdev.h which contains all the Linux
compatibility foo which is required to handle changes in the Linux block
APIs from 2.6.18 thru 2.6.31 based kernels.

* The dmu_{read,write}_uio interfaces which don't make sense on Linux
have been modified to dmu_{read,write}_req functions which consume the
standard Linux IO request structure.  Their function fundamentally
remains the same so this happily worked out pretty cleanly.

* The /dev/zfs character device is no longer created through the half
implemented Solaris driver DDI interfaces.  It is now simply created
with it's own major number as a Linux misc device which greatly simplifies
everything.  It is only capable of handling ioctls() but this fits nicely
because that's all it ever has to do.  The ZVOL devices unlike in Solaris
do not leverage the same major number as /dev/zfs but instead register
their own major.  Because only one major is allocated and space is reserved
for 16 partitions per-device there is a limit of 16384 concurrent ZVOL
devices.  By using multiple majors like the scsi driver this limit could
be addressed if it becomes a problem.

* The {spa,zfs,zvol}_busy() functions have all be removed because they
are not required on a Linux system.  Under Linux the registered module
exit function will not be called while the are still references to the
module.  Once the exit function is called however it must succeed or
block, it may not fail so returning an error on module unload makes to
sense under Linux.

* With the addition of ZVOL support all the HAVE_ZVOL defines were removed
for obvious reasons.  However, the HAVE_ZPL defines have been relocated
in to the linux-{kernel,user}-disk topic branches and must remain until
the ZPL is implemented.
2009-11-20 11:06:59 -08:00
Brian Behlendorf 6376951ac9 Merge branch 'linux-have-sysevent' into refs/top-bases/linux-zfs-branch 2009-11-20 10:58:52 -08:00
Brian Behlendorf 67154a81b9 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2009-11-20 10:58:51 -08:00
Brian Behlendorf bc20ccb15c Revert just zfs_ioctl.c changes moved to linux-kernel-disk branch. 2009-11-20 10:55:19 -08:00
Brian Behlendorf a40a4803a8 Merge branch 'linux-have-uio-rw' into refs/top-bases/linux-zfs-branch 2009-11-20 10:39:42 -08:00
Brian Behlendorf 6936334ac1 Revert linux-have-uio-rw branch, moved to linux-kernel-disk branch. 2009-11-20 10:35:26 -08:00
Brian Behlendorf fa92669c86 Merge commit 'refs/top-bases/linux-kernel-mem' into linux-kernel-mem 2009-11-20 10:30:58 -08:00
Brian Behlendorf 49fdb13bc8 Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2009-11-20 10:30:50 -08:00
Brian Behlendorf 29dd6c3161 Merge commit 'refs/top-bases/linux-have-uio-rw' into linux-have-uio-rw 2009-11-20 10:30:42 -08:00
Brian Behlendorf 7da32c3c8e Merge commit 'refs/top-bases/linux-debug-zerocopy' into linux-debug-zerocopy 2009-11-20 10:30:41 -08:00
Brian Behlendorf 4edabd1904 Merge branch 'linux-have-sysevent' into refs/top-bases/linux-zfs-branch 2009-11-20 10:30:30 -08:00
Brian Behlendorf d40808c351 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2009-11-20 10:30:28 -08:00
Brian Behlendorf 07cdadc1f8 Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2009-11-20 10:30:27 -08:00
Brian Behlendorf 2fb4c69f17 Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2009-11-20 10:29:58 -08:00
Brian Behlendorf 6d8a17ed45 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2009-11-20 10:29:52 -08:00
Brian Behlendorf cac1bc41dc Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2009-11-20 10:29:49 -08:00
Brian Behlendorf 77c347db31 Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2009-11-20 10:29:48 -08:00
Brian Behlendorf 0f315a58bb Merge branch 'gcc-uninit' into refs/top-bases/gcc-branch 2009-11-20 10:29:47 -08:00
Brian Behlendorf 0160d32326 Symbol spa_busy() not required in Linux port removing EXPORT_SYMBOL 2009-11-20 10:16:37 -08:00
Brian Behlendorf 3191b962f6 Prevent gcc uninit compiler warning in zfs_range_unlock_reader(). 2009-11-20 09:59:58 -08:00
Brian Behlendorf 5fac7f55be Merge commit 'refs/top-bases/linux-kernel-mem' into linux-kernel-mem 2009-11-15 16:28:16 -08:00
Brian Behlendorf 50e6c144e6 Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2009-11-15 16:28:08 -08:00
Brian Behlendorf 52f859a6cc Merge commit 'refs/top-bases/linux-have-uio-rw' into linux-have-uio-rw 2009-11-15 16:27:59 -08:00
Brian Behlendorf af5810b03a Merge commit 'refs/top-bases/linux-debug-zerocopy' into linux-debug-zerocopy 2009-11-15 16:27:59 -08:00
Brian Behlendorf c03a7d863c Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2009-11-15 16:27:44 -08:00
Brian Behlendorf b6c57fe77e Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2009-11-15 16:27:44 -08:00
Brian Behlendorf 826e82eff2 Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2009-11-15 16:27:12 -08:00
Brian Behlendorf 1b5b05c1c3 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2009-11-15 16:27:05 -08:00
Brian Behlendorf d00a0ea8a0 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2009-11-15 16:27:02 -08:00
Brian Behlendorf 71ccaccb2b Merge commit 'refs/top-bases/feature-pthreads' into feature-pthreads 2009-11-15 16:27:00 -08:00
Brian Behlendorf 475e214ce1 Merge commit 'refs/top-bases/feature-commit-cb' into feature-commit-cb 2009-11-15 16:27:00 -08:00
Brian Behlendorf 65f6d4b712 Merge commit 'refs/top-bases/feature-zap-cursor-to-key' into feature-zap-cursor-to-key 2009-11-15 16:26:58 -08:00
Brian Behlendorf 8c5797df77 Merge branch 'feature-zap-cursor-to-key' into refs/top-bases/feature-branch 2009-11-15 16:26:58 -08:00
Brian Behlendorf b57e406dd6 Merge commit 'refs/top-bases/fix-stack' into fix-stack 2009-11-15 16:26:47 -08:00
Brian Behlendorf e57bf40c98 Merge branch 'fix-clock-wrap' into refs/top-bases/fix-branch 2009-11-15 16:26:36 -08:00
Brian Behlendorf 00f3dfb5e9 Merge commit 'refs/top-bases/fix-clock-wrap' into fix-clock-wrap 2009-11-15 16:26:36 -08:00
Brian Behlendorf 59cbe87375 Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2009-11-15 16:26:31 -08:00
Brian Behlendorf 123728d9ae Merge commit 'refs/top-bases/gcc-ident-pragmas' into gcc-ident-pragmas 2009-11-15 16:26:23 -08:00
Brian Behlendorf 4f9acff2d8 Merge commit 'refs/top-bases/gcc-64bit-constants' into gcc-64bit-constants 2009-11-15 16:26:20 -08:00
Brian Behlendorf 217998d1a3 Merge commit 'refs/top-bases/gcc-uninit' into gcc-uninit 2009-11-15 16:26:12 -08:00
Brian Behlendorf d8aef5d7bc Merge branch 'gcc-c90' into refs/top-bases/gcc-branch 2009-11-15 16:25:52 -08:00
Brian Behlendorf 030d49c262 Merge commit 'refs/top-bases/gcc-c90' into gcc-c90 2009-11-15 16:25:50 -08:00
Brian Behlendorf 0aa61e8427 Remove zvol.c when updating in update-zfs.sh Linux version available. 2009-11-15 16:20:01 -08:00
Brian Behlendorf e576375b9f Merge branch 'linux-have-zpl' into refs/top-bases/linux-zfs-branch 2009-11-15 16:11:05 -08:00
Brian Behlendorf e588ef08cb Revert contents of linux-have-zpl topic branch. 2009-11-15 16:06:10 -08:00
Brian Behlendorf d876a087ff Merge branch 'linux-have-zvol' into refs/top-bases/linux-zfs-branch 2009-11-15 15:58:22 -08:00
Brian Behlendorf b38252d3ec Revert contents of linux-have-zvol topic branch. 2009-11-15 15:52:29 -08:00
Brian Behlendorf a4fb9a97f1 Merge branch 'linux-kernel-mem' into refs/top-bases/linux-zfs-branch 2009-11-12 12:55:54 -08:00