Allow receive and write_wakeup callbacks to be called at hard interrupt
context and/or with interrupts disabled (removes softirq warning).

This mirrors changes by Paul Mackerras to ppp_async.c for the same purpose.
Patch has been previously posted for comments and has been tested with
success by multiple persons.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch adds support for the O_NOATIME open flag (GNU extension):

int O_NOATIME  	Macro
  If this bit is set, read will not update the access time of the file.
  See File Times. This is used by programs that do backups, so that
  backing a file up does not count as reading it. Only the owner of the
  file or the superuser may use this bit.

It is useful if you want to do something with the file atime (for instance,
moving files that have not been accessed in a while to somewhere else, or
something like Debian's popularity-contest) but you also want to read all
files periodically (for instance, tripwire or debsums).

Currently, the program that reads all files periodically has to use utimes,
which can race with the atime update:

    A               B
  open
  fstat
  read
                  open
                  read
                  close
  close
  utimes

And the file still has the old atime, instead of the new one from when B
did the read from it.  This problem does not happen if A uses O_NOATIME
instead of utimes to preserve the atime.

This patch adds the O_NOATIME constant for all architectures, but it would
also be possible to add it one architecture at a time by defining it to 0
when not defined in asm-*.

Based on patch by Marek Michalkiewicz <marekm@i17linuxb.ists.pwr.wroc.pl> at
http://www.uwsg.iu.edu/hypermail/linux/kernel/9811.2/0118.htmlSigned-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Here's a patch to allocate memory for big system hash tables with the
bootmem allocator rather than with main page allocator.

It is needed for three reasons:

(1) So that the size can be bigger than MAX_ORDER.  IBM have done some
    testing on their big PPC64 systems (64GB of RAM) with linux-2.4 and found
    that they get better performance if the sizes of the inode cache hash,
    dentry cache hash, buffer head hash and page cache hash are increased
    beyond MAX_ORDER (order 11).

     Now the main allocator can't allocate anything larger than MAX_ORDER, but
     the bootmem allocator can.

     In 2.6 it appears that only the inode and dentry hashes remain of those
     four, but there are other hash tables that could use this service.

(2) Changing MAX_ORDER appears to have a number of effects beyond just
    limiting the maximum size that can be allocated in one go.

(3) Should someone want a hash table in which each bucket isn't a power of
    two in size, memory will be wasted as the chunk of memory allocated will
    be a power of two in size (to hold a power of two number of buckets).

    On the other hand, using the bootmem allocator means the allocation
    will only take up sufficient pages to hold it, rather than the next power
    of two up.

    Admittedly, this point doesn't apply to the dentry and inode hashes,
    but it might to another hash table that might want to use this service.


I've coelesced the meat of the inode and dentry allocation routines into
one such routine in mm/page_alloc.c that the the respective initialisation
functions now call before mem_init() is called.

This routine gets it's approximation of memory size by counting up the
ZONE_NORMAL and ZONE_DMA pages (and ZONE_HIGHMEM if requested) in all the
nodes passed to the main allocator by paging_init() (or wherever the arch
does it).  It does not use max_low_pfn as that doesn't seem to be available
on all archs, and it doesn't use num_physpages since that includes highmem
pages not available to the kernel for allocating data structures upon -
which may not be appropriate when calculating hash table size.

On the off chance that the size of each hash bucket may not be exactly a
power of two, the routine will only allocate as many pages as is necessary
to ensure that the number of buckets is exactly a power of two, rather than
allocating the smallest power-of-two sized chunk of memory that will hold
the same array of buckets.

The maximum size of any single hash table is given by
MAX_SYS_HASH_TABLE_ORDER, as is now defined in linux/mmzone.h.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

enable read prefetching on O2micro bridges. It fixes the problems
seen with the RME Hammerfall DSP.
Thanks to Eric Still from O2micro for the input.

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Daniel Ritz <daniel.ritz@gmx.ch>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Example code for the new DMI APU - port HP Pavilion irq workaround to new
DMI probing.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch creates and exports 2 functions which can be used by the rest of
kernel code to perform DMI data checks:

- dmi_check_system() function checks system DMI data against given blacklist
  table and on each match runs corresponding callback function;

- dmi_get_system_info() function returns DMI data value.  Useful for people
  wanting more complex DMI data check than simple string match.

Also filling unused match entries with NO_MATCH made optional, but existing
NO_MATCH occurences are left intact, so people are free to continue dmi_scan.c
patching without massive reject problems.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

In file included from include/asm/io.h:365,
                 from drivers/video/kyro/STG4000Reg.h:23,
                 from drivers/video/kyro/STG4000Ramdac.c:16:
include/asm/eeh.h:58: warning: `struct device_node' declared inside parameter list
include/asm/eeh.h:58: warning: its scope is only this definition or declaration, which is probably not what you want
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

With CONFIG_ALTIVEC=n, flush_altivec_to_thread() has no implementation.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

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

Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>

This one also removes the duplicate can_coalesce in tcp.c and makes it
use skb_can_coalesce.
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>

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

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

into kernel.bkbits.net:/home/davem/sparc-2.6

We might have to clear the flag, and if we do not
then subsequent syscalls can get confused.

Bug easily triggered by suspending emacs in a pty
and then resuming, select() returns due to a pending
signal but because _TIF_SYSCALL_SUCCESS is erroneously
set by a previous syscall -514 ends up slipping into
userspace.  Oops.

M68k I/O abstraction updates:
  - Make I/O ports and addresses `unsigned long'
  - Add casts to make operations warning-compatible with other archs
  - Add {in,out}[wl]_p() and {in,out}l(), which are needed for some drivers
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

M68k: Add missing atomic operations (from Roman Zippel and me) and replace
`__inline__' by `inline' while we're at it.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Mac IOP: Fix copy-and-paste bug (found by OPERA, reported by Zhenmin Li,
confirmed by Brad Boyer)
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

M68k: Make sparse work
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Mac Sonic Ethernet: Kill duplicate `MODULE_LICENSE("GPL");' (already defined in
included sonic.c) which causes a compile failure
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

AFFS: Fix oops on write after remount (from Roman Zippel):
  - Allocate/free bitmap as necessary
  - Remove last uses of SF_READONLY
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

M68k: From 2.6.7-rc1 on, it's no longer allowed to access page->count directly
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

M68k: Allow to catch a bus error via the exception mechanism (from Roman
Zippel)
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

M68k compiler updates from Roman Zippel:
  - Fix various lvalue warnings from newer gcc
  - Remove unnecessary volatile declarations
  - Change some constraints from "a" to "m" to generate slightly better code
  - Use "o" constraint for bitfield instructions
  - Use generic bitmap functions for some of the ext2/minix bitmap functions
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

M68k: Fixes for when compiling with modern gcc (from Roman Zippel):
  - Avoid warning 'use of memory input without lvalue in asm operand 0 is
    deprecated' of newer gcc
  - Replace some '%/' with offical '%%' to escape a '%'
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

IFPSP060: Make sure that the destination address of a misaligned cas access is
properly mapped in, so the kernel won't oops in the emulation handler (from
Roman Zippel).
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Recently, some distributors have set "utf8" to NLS_DEFAULT, therefore,
FAT uses the "iocharset=utf8" as default.  But, since "iocharset=utf8"
doesn't provide the function (lower <-> upper conversion) which FAT
needs, so FAT can't provide suitable behavior.

This patch does:

     - doesn't recognize "utf8" as "iocharset"
     - doesn't use NLS_DEFAULT as default "iocharset"
     - instead of NLS_DEFAULT, adds FAT_DEFAULT_CODEPAGE and
       FAT_DEFAULT_IOCHARSET
   
NOTE: the following looks like buggy, so it's not recommended

    "codepage=437,iocharset=iso8859-1,utf8"

however, some utf8 file name can handle. (in this case, it uses the
table of iso8859-1 for lower <-> upper conversion)
Sign-off-by: Jesse Barnes <jbarnes@engr.sgi.com>
Sign-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Sign-off-by: Linus Torvalds <torvalds@osdl.org>

This fixes a bug that prevent my amd64 box from booting;
numa_default_policy was __init however it's called like this in
init/main.c:

        free_initmem();
        unlock_kernel();
        system_state = SYSTEM_RUNNING;
        numa_default_policy();


eg after free_initmem(). This resulted in it being reused/freed and that
gives a nasty oops.

Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>

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

SMBulogged off.  Fixes umounting bug (pointed out by Nick Millington)
when multiple mounts with different userids are mounted to the same
server from the client.  

Signed-off-by: Steve French (sfrench@us.ibm.com)

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

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David S. Miller <davem@redhat.com>

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

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

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

We better stop the queue in the close call.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>