- The bio code already does this for us..

- Move definition of struct pmdsik_info to power.h and rename to struct 
  swsusp_info.
- Kill struct suspend_header. 
- Move helpers from pmdisk into swsusp: init_header(), dump_info(), 
  write_header(), sanity_check(), check_header().
- Fix up calls in pmdisk to call the right ones. 
- Clean up swsusp code to use helpers; delete duplicates. 

- Create swsusp_data_read() and call from read_suspend_image() in both
  swsusp and pmdisk. 
- Mark swsusp_pagedir_relocate() as static again. 

- Move bio helpers to swsusp.
- Convert swsusp to use them, rathen buffer_heads.
- Expose and fix up calls in pmdisk.
- Clean up swsusp::read_suspend_image() a bit.

- Split do_magic into swsusp_arch_suspend() and swsusp_arch_resume().
- Clean up based on pmdisk implementation
  - Only save registers we need to.
  - Use rep;movsl for copying, rather than doing each byte.
- Create swsusp_suspend and swsusp_resume wrappers for calling the assmebly
  routines that:
  - Call {save,restore}_processor_state() in each. 
  - Disable/enable interrupts in each. 
- Call swsusp_{suspend,restore} in software_{suspend,resume}
- Kill all the do_magic_* functions.
- Remove prototypes from linux/suspend.h
- Remove similar pmdisk functions.
- Update calls in kernel/power/disk.c to use swsusp versions.

- Move call out of assembly-callbacks and into software_suspend() after
  do_magic() returns. 

- Split count_and_copy_data_pages() into count_data_pages() and 
  copy_data_pages(). 
- Move helper saveable() from pmdisk to swsusp, and update to work with 
  page zones. 
- Get rid of uneeded defines in pmdisk.

- Move helpers calc_order(), alloc_pagedir(), alloc_image_pages(), 
  enough_free_mem(), and enough_swap() into swsusp. 
- Wrap them all with a new function - swsusp_alloc().
- Fix up pmdisk to just call that.
- Fix up suspend_prepare_image() to call that, instead of doing it inline.

- Introduce helpers to swsusp - swsusp_write_page(), swsusp_data_write() and
  swsusp_data_free(). 
- Delete duplicate copies from pmdisk and fixup names in calls. 
- Clean up write_suspend_image() in swsusp and use the helpers.

- In pmdisk, change pm_pagedir_nosave back to pagedir_nosave, and 
  pmdisk_pages back to nr_copy_pages.
- Mark them, and other page count/pagedir variables extern.
- Make sure they're not static in swsusp.
- Remove mention from include/linux/suspend.h, since no one else needs them.

- Use read_swapfiles() in swsusp and rename to swsusp_swap_check().
- Use lock_swapdevices() in swsusp and rename to swsusp_swap_lock().

- Expose and use version in swsusp.

This patch fixes a hard-to-trigger condition, where the inode is on the
inode_in_use list while it's state is dirty.  In this state dirty pages are
not written back in sync() or from kupdate, only from direct page reclaim. 
And this causes a livelock in balance_dirty_pages after a while.

The actual sequence of events required to get into this state is:

thread   function                             inode state         inode list
----------------------------------------------------------------------------
1 __sync_single_inode (background)            I_DIRTY             sb->s_io
1 do_writepages ...                           I_LOCKED
2 __writeback_single_inode (sync) sleeps      I_LOCKED
1 __sync_single_inode (background) finish     0                   inode_in_use
2 __writeback_single_inode (sync) wakeup      0
2 __sync_single_inode (sync)                  0 
2 do_writepages ...                           I_LOCKED
3 __mark_inode_dirty                          I_LOCKED | I_DIRTY
2 __sync_single_inode (sync) finish           I_DIRTY             left on
                                                                  inode_in_use
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Patch for our console driver.  We converted the driver to use the serial
core functions.  Also some changes to use sysfs/udev and a new major
number.

Cc: Jesse Barnes <jbarnes@engr.sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

partially annotated, fixed dereferencing of userland pointer (trivial,
since we'd just copied the entire structure).

Massive, but trivial - drm annotated and got 0->NULL where needed.  That
patch kills ~2200 lines of warnings - out of 5400 that remained at that
point.

the rest of iovec cleanups: nbd, dvb-net, sock.c::sock_no_sendpage(),
econet over udp and ip_vs switched to use of kvec and kernel_...msg().

sunrpc, nfs and nfsd switched to use of kvec and kernel_...msg()

rxrpc (low-level part of afs) switched to kernel_...msg(); it already was
using kvec instead of iovec.

cifs switched to kvec and kernel_...msg()

ncpfs switched to kvec and kernel_...msg()

smbfs switched to kvec and kernel_...msg()

Beginning of iovec cleanups - added two helpers (kernel_{send,recv}msg)
that do sock_sendmsg/sock_recvmsg with kvec instead of iovec; basically,
they were abstracted from earlier afs patch.  They take kvec/length of
kvec as separate arguments, do set_fs(), stick kvec into msghdr and call
sock_...msg(). 

The next group of patches will switch network filesystems to use of kvec
for kernel data + use of these helpers.  Basically, the same thing we'd
done for afs.

switched to compat_alloc_user_space(), cleaned up.

 - missing ; between default: and } in sun4setup.c
 - cast of pointer to unsigned long long instead of unsigned long in
   x86_64 signal.c
 - missed annotations for ioctl structure in sparc64 openpromio.h
   (should've been in the same patch as the rest of drivers/sbus/*
   annotations)
 - 0->NULL in list.h and pmdisk.c

A bunch of drivers are broken on sparc64; mark them as such in Kconfig.
arlan and smctr are not 64bit-clean; again, markes as such.

The au88x0 driver tries to use the wrong private field - there are two,
one of them int and another void *.

While it's not a problem on 32bot boxen, it breaks on 64bit ones. 

Fixed.