Writing to ramfs files with O_SYNC dereferences null in mpage_writepages(),
due to null a_ops->writepage.  The call path is

	generic_file_aio_write_nolock
	->generic_osync_inode
	  ->write_inode_now
	    ->__writeback_single_inode
	      ->__sync_single_inode
	        ->do_writepages
	          ->mpage_writepages

The best fix for this is to visit all ram-backed filesystems and give them a
no-op a_ops.writepages.  But baling out if the file is memory-backed is a
sufficient coverall and is how we handle this in __filemap_fdatawrite().
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

It only gives (not mapped in case of MMIO) DMA base addresses.
The same info is given during driver initialization (if BM-DMA is used)
or can be obtained from 'lspci -v' output (if MMIO-DMA is used).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

per jgarzik's suggestion

Define it in <asm/ide.h> if ide_default_io_base(),
ide_default_irq() and ide_init_default_irq() are needed.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

They are identical (modulo infamous PC9800 stuff).

Acked by Andi.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Also print the same warning as on m68k on other archs too.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: "Brian Lazara" <blazara@nvidia.com>

Add device IDs for new nForce IDE and SATA controllers.  Rename some of
the existing controller names to correctly match released product names.

Acked by Vojtech.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

While at it add DECLARE_AMD_DEV() and DECLARE_NV_DEV() macros
(ala piix.h:DECLARE_PIIX_DEV() added by jgarzik).

Acked by Vojtech.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- convert ->isa_ports into ->flags (IDEPCI_FLAG_ISA_PORTS)
- add IDEPCI_FLAG_{OBS_FORCE_PDC,FORCE_MASTER} flags
  and use them in setup-pci.c
- use struct pci_dev ->vendor and ->device fields directly
  in generic.c and serverworks.c
- remove no longer needed debug checks (dev->device != d->device)
- remove ->vendor and ->device fields from ide_pci_device_t
- misc cleanups
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Extracted from the Debian kernel package.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

When taskfile delivery is improved, we will actually perform
this command, instead of no-oping it.

For now, this is cosmetic except for removing an annoying message
that some users see.

The ->tf_load and ->exec_command driver hooks were changed to assume
that PIO was the only type of taskfile ever delivered to these functions.
This will be true... in the future, but not today.  In other drivers
this change was not needed, but Promise executes commands differently
due to its "ATA packet" hardware features, so the Promise drivers need
this change reverted.

Diagnosis and initial fix by Brad Campbell <brad@wasp.net.au>

into redhat.com:/spare/repo/net-drivers-2.6

The attached patch updates generic HDLC:
- fixed some carrier-related problems (Cisco HDLC and FR links could
  report valid link when no carrier was detected at startup).
- fixed kbuild problems with wanxl firmware (building kernel in separate
  tree). $(src)/wanxlfw.inc is now wanxlfw.inc_shipped.

Jeff Garzik writes:

> So what was the resolution of this?

This patch is what we want.  We don't in fact need to do the read
lock, only the write lock, which is what the original patch did.
However, we need to do it in ppp_synctty.c as well as ppp_async.c.

Thanks to John K Luebs <jkluebs@luebsphoto.com> for pointing out the
problem.
Signed-off-by: Paul Mackerras <paulus@samba.org>

Revert CONFIG_NET_GIGE change.

The proper fix is _not_ NET_ETHERNET or default twiddling,
but better overall organization of the ethernet driver selection,
which would include not only CONFIG_NET_GIGE but other options as well.

Reverted back to old behavior until a full and complete solution
appears (and people like it, of course).

* islpci_eth.[c,h], islpci_dev.[c,h], isl_ioctl.[c,h] : added
  support for avs header in monitor mode. Based on the work of
  Antonio Eugenio Burriel <aeb@ryanstudios.com>. Unified packets
  header (rfmon_header and rx_annex) for iwspy.

        * islpci_eth.c, islpci_dev.h, isl_ioctl.c : iwspy support.

* islpci_eth.[c,h] islpci_dev.[c,h] : reset card on tx_timeout.
  Patch submited by Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>

* oid_mgt.[c,h] : added type to oids. New functions :
  oid_cpu_to_le(), mgt_le_to_cpu() and mgt_response_to_str().

* isl_ioctl.c : use private sub-ioctls. Added a
  bunch of private sub-ioctls. Removed the le??_to_cpu and
  cpu_to_le??. Give the error code when sending wireless
  events.

* Remove CVS tags from source

I received a bug report that a PLIP interface was incorrectly identified
as wireless because plip_ioctl did not check what the value of cmd is
before processing the request.

This patch fixes exactly that.

Fix a race identified by Jeremy Kerr <jeremy@redfishsoftware.com.au>: if
update_process_times() decides to deliver a signal due to process timer
expiry, it can race with __exit_sighand()'s freeing of task->sighand.

Fix that by clearing the per-process timer state in exit_notify(), while under
local_irq_disable() and under tasklist_lock.  tasklist_lock provides exclusion
wrt release_task()'s freeing of task->sighand and local_irq_disable() provides
exclusion wrt update_process_times()'s inspection of the per-process timer
state.

We also need to deal with the send_sig() calls in do_process_times() by
setting rlim_cur to RLIM_INFINITY.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into cantab.net:/home/src/ntfs-2.6

into nuts.davemloft.net:/disk1/BK/net-2.6