- Remove from pmdisk.
- Remove pmdisk= command line option.

- Change name of free_suspend_pagedir() to swsusp_free().
- Call from kernel/power/disk.c

- Merge suspend_save_image() from both into one.
- Rename to swsusp_write(). 
- Remove pmdisk_write().
- Fixup call in kernel/power/disk.c and software_suspend().
- Mark lock_swapdevices() static again.

- Merge pmdisk_read() and __read_suspend_image() and rename to swsusp_read()
- Fix up call in kernel/power/disk.c to call new name.
- Remove extra error checking from software_resume().

This embodies the core of the swsusp->pmdisk cleanups. Instead of using the
->dummy variable at the end of each pagedir for a linked list of the page
dirs, this uses a static array, which is kept in the empty space of the 
swsusp header.

There are 768 entries, and could be scaled up based on the size of the page
and the amount of room remaining. 768 should be enough anyway, since each
entry is a swp_entry_t to a page-length array of pages. With larger systems
and more memory come larger pages, so each page-sized array will 
automatically scale up. 

This replaces the read_suspend_image() and write_suspend_image() in swsusp
with the much more concise pmdisk versions (not that big of change at this
point) and fixes up the callers so software_resume() gets it right. 

Also, mark the helpers only used in swsusp as static again.

- Move struct pmdisk_header definition to swsusp and change name to struct
  swsusp_header.
- Statically allocate one (swsusp_header), and use it during mark_swapfiles()
  and when checking sig on resume.
- Move check_sig() from pmdisk to swsusp.
- Wrap with swsusp_verify(), and move check_header() there. 
- Fix up calls in pmdisk and swsusp.
- Make new wrapper swsusp_close_swap() and call from write_suspend_image().
- Look for swsusp_info info in swsusp_header.swsusp_info, instead of magic
  location at end of struct. 

- 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