locked "xchg". It only needs a compiler barrier on UP.

This fixes the UP set_task_state and set_current_state in 2.5.43 to
ensure that we don't re-order loads around the store for setting
task->state.

This patch is from Nicolas Pitre, nico@cam.org

(As a side note - 2.4.10 also contains the same problem, but 2.2
contain the memory barrier.)

into home.transmeta.com:/home/torvalds/v2.5/linux

into home.transmeta.com:/home/torvalds/v2.5/linux

If a device didn't match a driver, bus_match() returned 0, and device_attach()
would break out of the loop. So, the first driver was the only one being
checked every time. 

This is pretty ugly, Al will fix up properly.

into home.transmeta.com:/home/torvalds/v2.5/linux

This recognizes & logs 2 more IO APIC bit fields and reduces UNEXPECTED
IO-APIC traffic.

Has also been acked by Maciej W. Rozycki (marco).

into home.transmeta.com:/home/torvalds/v2.5/linux

infrastructure.

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-core

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-sysfs

into home.transmeta.com:/home/torvalds/v2.5/linux

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-sysfs

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-sysfs

into osdl.org:/home/mochel/src/kernel/devel/linux-2.5-core

o Change the blk_dump_rq_flags() a bit

o Use rq->bio as an indication of ->bio is valid or not, instead of
  checking REQ_PC. Now we can have a bio on a REQ_BLOCK_PC as well.

o Don't print eio error in end_that_request_first(), if REQ_QUIET is set.

o debug check for valid bio in end_that_request_first()

o Add blk_pc_request() check REQ_BLOCK_PC, similar to blk_fs_request()

Remove the calling of scsi_cmd_ioctl() from ide-cd.  Put it in the
uniform cdrom layer, this also makes SCSI SG_IO work.

Make SCSI layer understand REQ_BLOCK_PC requests

A recent change that went into BK-2.5 removed the next member of the
scsi host and replaced it with lists, which is cool, but this broke a
few common drivers.

Here is the fix for aic7xxx_old.

Recent scsi host changes broke sym2, it iterates over the scsi host list
itself. This patch changes sym2 to use scsi_host_hn_get() to find a scsi
host from its hostno.

This patch fixes a bug in my AFS client in which a put of an outstanding call
was missing in the unmount cleanup code. This occasionally resulted in the AFS
module becoming unremovable.

Fill devno[cid] from request instead of sc_request->sr_request since
sc_request is passed in as NULL now.

Somewhere along the line, indentation on this file went mental.

As per Documentation/SubmittingPatches

By Urban Widmark

Most work done by Paul Gortmaker. More work needed.

Marc Singer noticed some BIOSen on the AMD Elan
alias the cpu frequency registers in a place that some
drivers probe during bootup. Result - changed CPU speed
after booting.

The fix is to unmap the alias.

Marc put a patch forward for 2.2, this one is cooked up
by me, but is currently untested but functionally equivalent.

(is already in drivers/char/agp/Config.help)

The smp_call_function() does the check on the local cpu for us.