Documentation enhancement from Kai.Makisara@metla.fi.

[ This is a transfer from Dave's tree ]

Fix oopses on ISA scsi adapters.

[ This is a transfer from Dave's tree ]

- The balance_dirty_pages() logic is simply wrong.  It goes:

	if (value > threshold)
		go_and_write(value - threshold);

  which is just fine for a single process writing data.  But
  for many processes, they *all* go and bring things back into
  balance, and too much data gets written out.

- The

	go_and_write(this much)

  logic is inoperative, because I turned off the ->writeback_mapping()
  function in ext2.  So a call to writeback_unlocked_inodes(this_much)
  doesn't actually decrement and test *this_much.  It will walk every
  inode, all the time.  Silly.

So quickly fixing the above things, the amount of dirty+writeback
memory in the machine nicely stabilises at 500 megabytes across
the run.

The new consistency checks in buffer.c are complaining about
block_symlink's ->readpage against an already uptodate
page.

- Fix compilation of piix.c

- Remove the PADAM_ prefix from sleep hwgroup member.

- Fix Pacific Digital host chip driver API.

- Fix Tekram host chip driver API.

- Fold hwif_unregister() directly in to channel code.

Add support for request tagging of the block queue.

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

- Fix macro varargs usage, you need to specify a variable name
before the triple dot or else most current compilers complain.
See include/linux/ext2_fs.h:ext2_debug for another example where
it is done correctly.

- Fix bug in strsep/strchr changes, dereference *this_char
not *value at top of while loop.  This matches how the same
code in fs/autofs4/inode.c looks right now.
Withtout this autofs loading causes an OOPS as the first
time through the loop *value is dereferencing a NULL pointer.

Fix some set_bit() warnings.

The real rule is not "block size is at most 32Kb", it's "block size is
at most 8 times the fragment size".

into penguin.transmeta.com:/home/penguin/torvalds/repositories/kernel/linux

(originally caught by Paul Larson <plars@austin.ibm.com>)

	Patch fixes a couple of idiotic bugs in notify_change() (my
fault).  Unary operations have higher priority than binary ones, so
if (!valid & ATTR_MODE) doesn't do the right thing.  I plead temporary
braindamage...

The below patch on 2.5.12 takes the 'dbench 32' throughput on a
1024 megabyte machine from 35 megs/sec up to 125 megs/sec.
That's on the second run.  The first run is much slower because
the ext2 bitmaps aren't in cache.

Presumably, s/60/80/ will take it even higher.

Remove bogus BUG_ON().  On UP kernels spinlocks become NOPs so it is
not possible to test the state of a lock.

Patch to the aha152x driver, which makes it work under 2.5.

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

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

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

Drop back to eieio in spinlocks for the moment due to performance
issues of sync on power3

into samba.org:/scratch/anton/linux-2.5_ppc64

Pretty boring stuff.  Four compile fixes for 2.5.12.

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

If snd-pcm.o is selected built-in, snd-timer.o needs to be get built-in
as well, since snd-pcm.o needs snd-timer.o's symbols.

Remove description of long obsolete (pre-2.4) Makefiles and describe the
current system.

Get rid of long obsolete (and unused) MOD_IN_SUBDIRS and unnecessary
MOD_DIRS variable.

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

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

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

block_flushpage() used to be a macro which pointed at the
exported discard_bh_page().  I turned block_flushpage() into
a real function but forgot the export.

path_lookup() is no longer an inline function, and needs to be exported
for jffs2, nfsd and af_unix to load as modules.

Douglas Gilbert's SCSI cleanups

This patch has the last bit of Justin Gibb's patch
described in:
http://marc.theaimsgroup.com/?l=linux-scsi&m=101200279101550&w=2
[this bit for the sd driver]

There is also a major code cleanup of the sd driver with
documentation headers added and a few obvious bugs fixed
described in:
http://marc.theaimsgroup.com/?l=linux-scsi&m=101798201714399&w=2
I did this cleanup.

Justin's patch has been in Dave's tree for several months while
my code cleanup patch has been there since 2.5.9-dj1 .