Begin the pagetable walker cleanup with a straightforward example,
mprotect's change_protection.  Started out from Nick Piggin's for_each
proposal, but I prefer less hidden; and these are all do while loops,
which degrade slightly when converted to for loops.

Firmly agree with Andi and Nick that addr,end is the way to go: size is
good at the user interface level, but unhelpful down in the loops.  And
the habit of an "address" which is actually an offset from some base has
bitten us several times: use proper address at each level, whyever not?

Don't apply each mask at two levels: all we need is a set of macros
pgd_addr_end, pud_addr_end, pmd_addr_end to give the address of the end
of each range.  Which need to take the min of two addresses, with 0 as
the greatest.  Started out with a different macro, assumed end never 0;
but clear_page_range (alone) might be passed end 0 by some out-of-tree
memory layouts: could special case it, but this macro compiles smaller.
Check "addr != end" instead of "addr < end" to work on that end 0 case.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

pgtable.h now need pud_t.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Replace the repetitive p?d_none, p?d_bad, p?d_ERROR, p?d_clear clauses
by pgd_none_or_clear_bad, pud_none_or_clear_bad, pmd_none_or_clear_bad
inlines throughout common and i386 - avoids a sprinkling of "unlikely"s.

Tests inline, but unlikely error handling in mm/memory.c - so the ERROR
file and line won't tell much; but it comes too late anyway, and hardly
ever seen outside development.

Let mremap use them in get_one_pte_map, as it already did in _nested;
but leave follow_page and untouched_anonymous page just skipping _bad
as before - they don't have quite the same ownership of the mm.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Successive mlock/munlock calls can leave fragmented vmas because they can
be split but not merged.  Give mlock et.  al.  full vma merging support.
While we're at it, move *pprev assignment above first split_vma in
mprotect_fixup to keep it in step with mlock_fixup (which for mlockall
ignores errors yet still needs a valid prev pointer).
Signed-off-by: Chris Wright <chrisw@osdl.org>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Convert /dev/mem read/write calls to use arch_translate_mem_ptr if
available.  Needed on ia64 for pages converted fo uncached mappings to
avoid it being accessed in cached mode after the conversion which can lead
to memory corruption.  Introduces PG_uncached page flag for marking pages
uncached.

Also folds do_write_mem into write_mem as it was it's only user.

Use __ARCH_HAS_NO_PAGE_ZERO_MAPPED for architectures to indicate they
require magic handling of the zero page (Sparc and m68k).
Signed-off-by: Jes Sorensen <jes@wildopensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

In data=journal mode, when blocks are freed and their buffers are dirty,
reiserfs can remove them from the transaction without cleaning them.  These
buffers never get cleaned, resulting in an unfreeable page.
Signed-off-by: Chris Mason <mason@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Chris found that with data journaling a reiserfs pagecache may be truncate
while still pinned.  The truncation removes the page->mapping, but the page
is still listed in the VM queues because it still has buffers.  Then during
the journaling process, a buffer is marked dirty and that sets the PG_dirty
bitflag as well (in mark_buffer_dirty).  After that the page is leaked
because it's both dirty and without a mapping.

So we must allow pages without mapping and dirty to reach the PagePrivate
check.  The page->mapping will be checked again right after the PagePrivate
check.
Signed-off-by: Andrea Arcangeli <andrea@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

There is a bug booting with CONFIG_NUMA=y, CONFIG_X86_GENERICARCH=y, and
booting on a non-NUMA system.  While not the most common configuration, it
should surely be supported.

memmap_init_zone() is the first user to do pfn_to_nid(), which relies on
physnode_map[] to be done properly.  memory_present() was supposed to do
that, but never got called for the flat configuration, so pfn_to_nid() was
returning -1 on valid pages.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/video/intelfb/intelfbdrv.h:31: warning: 'intelfb_setup' declared `static' but never defined
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/mtd/maps/ich2rom.c is completely unused because it was renamed to
drivers/mtd/maps/ichxrom.c.

This patch removes the stale ich2rom.c file.

This patch was already ACK'ed by David Woodhouse and Eric W. Biederman.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

dcache: is_subdir forgot to reset the result after seqretry.
Signed-Off-by: Prasanna Meda <pmeda@akamai.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This is the DVB whitespace cleanup patch (the big one ;-).

I checked the whitespace-onlyness:

linux-2.6.11-bk9$ find drivers/media/common drivers/media/dvb -name "*.o" | xargs size >/tmp/1
linux-2.6.11-bk9$ cd -
linux-2.6.11-bk9.patched
linux-2.6.11-bk9.patched$ find drivers/media/common drivers/media/dvb -name "*.o" | xargs size >/tmp/2
linux-2.6.11-bk9.patched$ less /tmp/1
linux-2.6.11-bk9.patched$ less /tmp/2
linux-2.6.11-bk9.patched$ diff -us /tmp/1 /tmp/2
Files /tmp/1 and /tmp/2 are identical

DVB whitespace cleanups:

 o sync kernel and linuxtv.org CVS wrt whitespace
 o repair indentation damage
 o remove whitespace at eol
Signed-off-by: Johannes Stezenbach <js@linuxtv.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch fixes a logic error in the ide-pmac driver which could try to
access the chip's fcr register after the cell clock has been shut down,
thus causing a machine check on machines with the "Intrepid" chipset.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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

outside of cifs vfs)

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

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

This patch further cleans up the appearance of TF in eflags when ptrace is
involved.  With this, PTRACE_SINGLESTEP will not cause TF to appear in
eflags as seen by PTRACE_GETREGS and the like, when the instruction faulted
for some reason other than the single-step trap.

This moves the check added by Dan's patch from setup_sigcontext to
handle_signal.  This is a cosmetic difference, but I think it makes more
sense to consolidate all the "reset registers to canonical state" work in
the same place (i.e. put it with the syscall rollback code), separate from
the signal handler setup.

The change that matters is moving the similar check out of do_debug,
where it only covers the case of a single-step trap.  Instead, it goes
into the ptrace_signal_deliver macro, which is called before the ptrace
stop for whatever signal results from whatever kind of fault in that
instruction (or asynchronous signal).  With that, the handle_signal
check is still needed only for the case of PTRACE_SINGLESTEP with a
handled signal.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

into mars.ravnborg.org:/home/sam/bk/kconfig

fix:
arch/ppc/Kconfig:211:warning: type of 'CPU_FREQ_TABLE' redefined from 'tristate' to 'boolean'
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

This properly indents the USB menu.
In usb menu do not display comment when USB is disabled.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

This properly indents various driver menus.
Remove PARPORT_PC_CML1.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

o This properly indents the kernel hacking menu.
o Move LOG_BUF_SHIFT into kernel hacking menu (it already depended on DEBUG_KERNEL).
o Add DEBUG_KERNEL dependency to EARLY_PRINTK, DEBUG_PREEMPT and FRAME_POINTER.
o Remove overlong dependency, which included practically every arch.
o Merge the two MAGIC_SYSRQ menu entries.
o Remove unnecessary "default n" options.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

This properly indents the cpufreq menu.
Remove CPU_FREQ_TABLE as visible option and use select instead
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

This properly indents the bus options menu.
Merge the two MCA variables.
Remove unnecessary "default n" options.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Simplify dependencies.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

This patch fixes some warnings about GtkToolButton in gconfig
Signed-off-by: Romain Liévin <lkml@lievin.net>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Define own icons for tree structure, allowing icons to match other icons.
This also makes gconfig independent on icons defined for xconfig.
Teached bk to ignore gconf executable
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

into bkbits.net:/repos/c/cifs/linux-2.5cifs

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

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

into mars.ravnborg.org:/home/sam/bk/kbuild

into bkbits.net:/repos/c/cifs/linux-2.5cifs

Fix singlestepping into a signal handler
Signed-off-by: Randolph Chung <tausq@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Update my copyright information in a few files (email change)
Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

makes a needlessly global variable static.
Posted to parisc-linux mailing list on Mon, 6 Dec 2004 01:41:39 +0100
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Remove no-longer-needed ASSERTs
Signed-off-by: Grant Grundler <grundler@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Fix declaration-after-code

From: Grant Grundler <grundler@parisc-linux.org>
From: Randolph Chung <tausq@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fix problem with building 64-bit kernels with gcc-3.4
Signed-off-by: Randolph Chung <tausq@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The IRT buffer must be 8-byte aligned
Signed-off-by: Randolph Chung <tausq@parisc-linux.org>
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>