From: Ethan Benson <erbenson@alaska.net>

Currently Linux allows the use of the utime() and utimes() syscalls on
immutable or append-only files, this is incorrect.

utime{s}() is not supposed to work if you lack write access to a file,
in the case of an immutable file NOBODY has write access.

for an append-only file it only makes sense to be able to update its
time to present, not the past.

I have checked BSD, and they implement the behavior I propose, for
immutable files utime() and utimes() fail.  for append-only files they
fail if the time argument is not NULL.

From: John Levon <levon@movementarian.org>

Not that many people are going to be using GCC 3.4 currently, but it
might help a bit to prevent compilation bugs like that just witnessed
in procfs.

(And it consolidates the check_gcc implementation nicely)

From: Christoph Hellwig <hch@lst.de>

Some junk which was needed before we did the big cleansweep for the sysrq
syncing stuff.

From: Christoph Hellwig <hch@lst.de>

Richard hasn't touched it for about a year and since then only bugfixes and
my changes to the kernel interface went in.  No one has stepped up to
maintain it and with udev we have a proper replacement now.

I will do some more work before 2.6 (mainly trying to implement Al's
refcounting scheme to avoid stale entries), but that's it.

From: "David S. Miller" <davem@redhat.com>

It's from Ingo Molnar.  ksoftirqd kicks in way too early, so do more work in
interrupt context before falling back.

We can probably sysctl this thing, that way everyone gets what they want
probably...

(has been in -mm since 2.5.71 and I haven't heard a peep).

From: Manfred Spraul <manfred@colorfullife.com>

- Remove cache_alloc_one_tail and cache_alloc_listfixup - there is no
  reason for their existance.

- Print a bit more debugging info when slab corruption is detected.

	Argh.  A couple of places where we needed ..._encode_dev() had
been lost in reordering the patchset - the most notable being ctty number in
/proc/<pid>/stat.  Fix follows:

This fixes several things including fixing the character ioctl polling
to use wait_event_interruptible_timeout() instead of
interruptible_sleep_on_timeout() and several other fixes.

These changes were already applied to 2.4.22.

into home.osdl.org:/home/torvalds/v2.5/linux

into home.osdl.org:/home/torvalds/v2.5/linux

From Szombathelyi György

This fixes a memory leak in the uniform cdrom layer.

From Szombathelyi György

This fixes a problem where the residual data count isn't being set
correctly.

Real conversion to 32bit dev_t.  Expansion to:
	* mknod() - 32
	* newstat() - 32 on 64bit platforms
	* stat64() - 32 on mips, 64 on everything else (mips has weird struct
stat64 and can't get more than 32 bits).  Note that right now the difference
is purely theoretical - we don't have internal values above 32 bits, so
huge_... vs. new_... only marks the places where 64bit conversion will need
extra work.
	* arch-dependent stat variants - depending on width available.
	* ustat et.al. - 32
	* filesystems that can handle 32 bits right now - 32
	* ext2 and ext3 - 32, with large dev_t inodes having 0 in the first
element of i_data[] (where we store dev_t value for small device numbers) and
keeping the value in the second element.
	* nfsd - 32; it can be driven to 64, but we'll get several issues with
NFSv2 support.
	* RAID - 32
	* devmapper - with v1 it's still 16 (nothing to do here), with v4 it's
64.
	* loop - 64
	* initramfs - 32
	* do_mounts code - 32.  Parts that scan devfs tree are using newstat()
on 64bit platforms and stat64() on the rest (IOW, the latest stat variant on
given platform).
	* old_valid_dev()/new_valid_dev() added where needed (stat variants,
mostly - we fail with -EOVERFLOW if values do not fit).

Starting the conversion:
	* internal dev_t made 32bit.
	* new helpers - new_encode_dev(), new_decode_dev(), huge_encode_dev(),
huge_decode_dev(), new_valid_dev().  They do encoding/decoding of 32bit and
64bit values; for now huge_... are aliases for new_... and new_valid_dev()
is always true.  We do 12:20 for 32bit; representation is compatible with
16bit one - we have major in bits 19--8 and minor in 31--20,7--0.  That's
what the userland sees; internally we have (major << 20)|minor, of course.
	* MKDEV(), MAJOR() and MINOR() updated.
	* several places used to handle Missed'em'V dev_t (14:18 split)
manually; that stuff had been taken into common helpers.
	Now we can start replacing old_... with new_... and huge_..., depending
on the width available.  MKDEV() callers should (for now) make sure that major
and minor are within 12:20.  That's what the next chunk will do.

	Added old_encode_dev() to assorted stat() variants.
	Fixed bug in s390 emulation on s390x: stat64() should never truncate
UID and GID.
	Ditto for i386 emulation on x86_64.
	Replaced dev_t in various struct stat with explicit integer type.
	Replaced __kernel_dev_t with __old_kernel_dev_t in dm-ioctl-v1.h
	Now we are free to change dev_t in any way we want - on all boundaries
we have explicit conversions.
	Took __kernel_dev_t definition to linux/types.h and changed it with
__u16.  We are ready to proceed to 32bit now.

	Added old_encode_dev()/old_decode_dev() in CODA code - on assignments
to/from ->va_rdev.

	Added old_encode_dev() in loop.c

	Changed sys_mknod() prototype to have unsigned int passed to it
instead of current dev_t.  Added old_decode_dev() in sys_mknod() and
made sure that its callers are passing it old_encode_dev(<value>)
	Switched sys_ustat() and its variants from dev_t to unsigned (and
added old_decode_dev()).
	Took care of assignments to ROOT_DEV - again, old_decode_dev().
	Late-boot search in devfs (call sys_newstat() and compare with
st_rdev) also updated.

	Added old_encode_dev()/old_decode_dev() in dm-ioctl-*.c

	Minor cleanups in md.c + added old_decode_dev() on ioctl argument in
there.

	Minor cleanup of jffs2 fill_super.

	Added missing old_encode_dev() in JFS.

	NFS made dev_t-agnostic.  Aside of minor fixes in debugging printks,
and adding old_encode_dev()/old_decode_dev(), the main part is in handling
of exports with large dev_t.  New fhandle format introduced, fh_verify(),
fh_compose() and exports cache taught to deal with it.  Format is used when
->s_dev of exported fs doesn't fit into 256:256; in that case we put major
and minor in separate words in fhandle; ->fh_fsid_type is set to 2.

	tty->device had been used only in a couple of places and can be
calculated by tty->index and tty->driver.  Field removed, its users switched
to static inline dev_t tty_devnum(tty).

	sanitized dev_t use in debugging printks in XFS, switched their
bhash to use of struct block_device, added old_encode_dev() in XFS statfs()
(it had stored dev_t in ->fs_id[0])

	added old_encode_dev() in drm debugging printks, so they won't change
when we go for bigger dev_t.

	fs/reiserfs/procfs.c made sane.  It used to store dev_t of filesystem
in the proc_dir_entry->data (which is void *) and played very odd games after
that.
	Switched to seq_file, stores pointer to superblock, uses sget() to
validate it, avoids use of dev_t completely.

into kernel.bkbits.net:/home/davem/sparc-2.5

into kernel.bkbits.net:/home/davem/net-2.5

K8 can run with a 32bit kernel too.  If that's the case we have to tell
user space about it.  Remove the unneeded ifdef.

In that case the CPU is called "x86-64/hammer" even on 32bit.  This is
not strictly true on i386, but it's the named used by the current
oprofile user space for K8 performance counters and it would complicate
things to use different names between 32bit and 64bit.

 - Fix -funit-at-a-time compilation and enable it when possible
 - Remove -finline-limit as it should not be needed anymore.
 - Update defconfig
 - Fix Makefile bug that caused a recompilation of vsyscall.so on
   every make (thanks to Sam Ravnborg)
 - Add beginning of asm/dwarf2.h to support assembler CFI directives
   (not complete yet)
 - Remove old PDAREF macro from entry.S
 - Remove clever and buggy code in sys_ioperm/set_bitmap and replace it
   by simple and working code
 - Don't make acpi_disabled __initdata.  It is referenced after boot.
 - Fix TLB size reporting in /proc/cpuinfo
 - Cleanup oops printing a bit
 - Add "executive summary" at end of oopses
 - Reenable interrupts on oopses before calling do_exit
 - Remove some unneeded prefetches.  Just two are enough to kickstart
   the hardware prefetcher.
 - Add prefetch workaround (based on code from Richard Brunner)
 - Clean up signal checking in do_page_fault
 - Don't allow modify_ldt to set 64bit codesegments
 - Readd SIGEV_PAD_SIZE (Stephen Rothwell)
 - Add some likelys to uaccess.h (idea from Manfred Spraul)

into samba.org:/home/paulus/kernel/for-linus-ppc

Change ASSERT_RTNL and BUG_TRAP
- unlikely to occur
- tag message as error
- dump_stack in ASSERT_RTNL to aide finding code path
- make all format's which a smart compiler can optimize