Dmapi support was never merged upstream, but we still have a lot of hooks
bloating XFS for it, all over the fast pathes of the filesystem.

This patch drops over 700 lines of dmapi overhead.  If we'll ever get HSM
support in mainline at least the namespace events can be done much saner
in the VFS instead of the individual filesystem, so it's not like this
is much help for future work.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NDave Chinner <dchinner@redhat.com>

xfs_mount.h, which it depends on.
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NAlex Elder <aelder@sgi.com>
Signed-off-by: NFelix Blyakher <felixb@sgi.com>

Fix this sparse warnings:
  fs/xfs/linux-2.6/xfs_ioctl.c:72:1: warning: symbol 'xfs_find_handle' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:249:1: warning: symbol 'xfs_open_by_handle' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:361:1: warning: symbol 'xfs_readlink_by_handle' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:496:1: warning: symbol 'xfs_attrmulti_attr_get' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:525:1: warning: symbol 'xfs_attrmulti_attr_set' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:555:1: warning: symbol 'xfs_attrmulti_attr_remove' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:657:1: warning: symbol 'xfs_ioc_space' was not declared. Should it be static?
  fs/xfs/linux-2.6/xfs_ioctl.c:1340:1: warning: symbol 'xfs_file_ioctl' was not declared. Should it be static?
  fs/xfs/support/debug.c:65:1: warning: symbol 'xfs_fs_vcmn_err' was not declared. Should it be static?
  fs/xfs/support/debug.c:112:1: warning: symbol 'xfs_hex_dump' was not declared. Should it be static?
Signed-off-by: NHannes Eder <hannes@hanneseder.net>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NFelix Blyakher <felixb@sgi.com>

xfs_fs_vcmn_err can be called under a spinlock, but does a sleeping memory
allocation to create buffer for it's internal sprintf.  Fortunately it's
the only caller of icmn_err, so we can merge the two and have one single
static buffer and spinlock protecting it.  While we're at it make sure
we proper __attribute__ format annotations so that the compiler can detect
mismatched format strings.
Reported-by: NAlexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NEric Sandeen <sandeen@sandeen.net>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>

SGI-PV: 987246

SGI-Modid: xfs-linux-melb:xfs-kern:32233a
Signed-off-by: NBarry Naujok <bnaujok@sgi.com>
Signed-off-by: NEric Sandeen <sandeen@sandeen.net>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>

No need for xfs to have its own hex dumping routine now that the kernel
has one.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:29847a
Signed-off-by: NEric Sandeen <sandeen@sandeen.net>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

remove spinlock init abstraction macro in spin.h, remove the callers, and
remove the file. Move no-op spinlock_destroy to xfs_linux.h Cleanup
spinlock locals in xfs_mount.c

SGI-PV: 970382
SGI-Modid: xfs-linux-melb:xfs-kern:29751a
Signed-off-by: NEric Sandeen <sandeen@sandeen.net>
Signed-off-by: NDonald Douwsma <donaldd@sgi.com>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

Patch provided by Joe Perches

SGI-PV: 961696
SGI-Modid: xfs-linux-melb:xfs-kern:28209a
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

The message buffer used by cmn_err() is only 256 bytes and some CXFS
messages were exceeding this length. Since we were using vsprintf() and
not checking for buffer overruns we were clobbering memory beyond the
buffer. The size of the buffer has been increased to 1024 bytes so we can
capture these larger messages and we are now using vsnprintf() to prevent
overrunning the buffer size.

SGI-PV: 958599
SGI-Modid: xfs-linux-melb:xfs-kern:27561a
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: NGeoffrey Wehrman <gwehrman@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

CONFIG_XFS_TRACE is on

SGI-PV: 956618
SGI-Modid: xfs-linux-melb:xfs-kern:27196a
Signed-off-by: NVlad Apostolov <vapo@sgi.com>
Signed-off-by: NTim Shimmin <tes@sgi.com>

This patch converts two if () BUG(); construct to BUG_ON();
which occupies less space, uses unlikely and is safer when
BUG() is disabled.
Signed-off-by: NEric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

interface.

SGI-PV: 953338
SGI-Modid: xfs-linux-melb:xfs-kern:26103a
Signed-off-by: NNathan Scott <nathans@sgi.com>

equivalents.

SGI-PV: 907752
SGI-Modid: xfs-linux-melb:xfs-kern:24961a
Signed-off-by: NNathan Scott <nathans@sgi.com>

spotting these.

SGI-PV: 946028
SGI-Modid: xfs-linux-melb:xfs-kern:202617a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

boilerplate.

SGI-PV: 913862
SGI-Modid: xfs-linux:xfs-kern:23903a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 904196
SGI-Modid: xfs-linux-melb:xfs-kern:23719a
Signed-off-by: NNathan Scott <nathans@sgi.com>

SGI-PV: 938063
SGI-Modid: xfs-linux:xfs-kern:194416a
Signed-off-by: NChristoph Hellwig <hch@sgi.com>
Signed-off-by: NNathan Scott <nathans@sgi.com>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!