[MTD] return error code from get_mtd_device()

get_mtd_device() returns NULL in case of any failure. Teach it to return an
error code instead. Fix all users as well.

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] add get and put methods

This patch adds get_device() and put_device() methods to the MTD description
structure (struct mtd_info). These methods are called by MTD whenever the MTD
device is get or put. They are needed when the underlying driver is something
smarter then just flash chip driver, for example UBI.

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] add get_mtd_device_nm() function

This patch adds one more function to the MTD interface to make it possible to
open MTD devices by their names, not only numbers. This is very handy in many
situations. Also, MTD device number depend on load order and may vary, while
names are fixed.

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] NAND: add subpage write support

Many SLC NANDs support up to 4 writes at one NAND page. Add support
of this feature.

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] add MTD_BLKDEVS Kconfig option

Add a MTD_BLKDEVS Kconfig option to cleanup the makefile a bit

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] fix map probe name for cstm_mips_ixx

This patch has fixed name of map probe for cstm_mips_ixx.c

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] increase MAX_MTD_DEVICES

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>

[MTD] Tidy bitrev usage in rtc_from4.c

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] [NAND] fix ifdef option in nand_ecc.c

Fix up the config option in the #ifdef statements in nand_ecc.c

Signed-off-by: Timo Lindhorst <lindhors@linux.vnet.ibm.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] [NAND] Update CAFÉ driver interrupt handler prototype

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

Merge git://git.infradead.org/~kmpark/onenand-mtd-2.6

[MTD] replace kmalloc+memset with kzalloc

Signed-off-by: Yan Burman <yan_952@hotmail.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] Fix printk format warning in physmap. (resources again)

Fix printk format warning:
drivers/mtd/maps/physmap.c:93: warning: long long unsigned int format, long unsigned int arg (arg 2)

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

Merge git://git.infradead.org/~dwmw2/cafe-2.6

[MTD] [NAND] remove len/ooblen confusion.

As was discussed between Ricard Wanderlöf, David Woodhouse, Artem
Bityutskiy and me, the current API for reading/writing OOB is confusing.

The thing that introduces confusion is the need to specify ops.len
together with ops.ooblen for reads/writes that concern only OOB not data
area. So, ops.len is overloaded: when ops.datbuf != NULL it serves to
specify the length of the data read, and when ops.datbuf == NULL, it
serves to specify the full OOB read length.

The patch inlined below is the slightly updated version of the previous
patch serving the same purpose, but with the new Artem's comments taken
into account.

Artem, BTW, thanks a lot for your valuable input!

Signed-off-by: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] Allow variable block sizes in mtd_blkdevs

Currently, mtd_blkdevs enforces a block size of 512, even if the drivers
can seemingly request a different size. This patch fixes mtd_blkdevs so
block sizes other than 512 work correctly.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] [MAPS] Support for BIOS flash chips on the nvidia ck804 southbridge

Add support for accessing BIOS flash chips connected to the NVIDIA ck804 southbridge.

Signed-off-by: Ryan Jackson <rjackson@lnxi.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] [NAND] Fix endianess bug in ndfc.c

The writel() call accidentally clears all bits in the NDFC_CCR
register (endianess problem). Now __raw_writel() is used instead.

Tested on Bamboo with NAND on chip select 0 and chip select 1.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] make drivers/mtd/cmdlinepart.c:mtdpart_setup() static

This patch makes the needlessly global mtdpart_setup() static.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] [NAND] rtc_from4.c: use lib/bitrev.c

This patch converts drivers/mtd/nand/rtc_from4.c to use the new
lib/bitrev.c

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] OneNAND: Single bit error detection

Idea from Jarkko Lavinen

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

[MTD] OneNAND: lock support

Now you can use mtd lock inferface on OneNAND

The idea is from Nemakal, Vijaya, thanks

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

MTD: OneNAND: interrupt based wait support

  We can use the two methods to wait.
  1. polling: read interrupt status register
  2. interrupt: use kernel ineterrupt mechanism

  To use interrupt method, you first connect onenand interrupt pin to your
platform and configure interrupt properly

Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>

[MTD] NAND: Fix ECC settings in CAFÉ controller driver.

We were resetting cafe->ctl2 to zero after an erase (and also during a
write, but it was correctly reset after that). This meant that ECC reads
after an erase were failing. Doh.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Add register debugging spew option to CAFÉ driver

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Use register #defines throughout CAFÉ driver, not numbers

Also use cafe_readl() and cafe_writel() abstraction to make code
slightly cleaner -- especially if we want to use it in PIO mode.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Fix timing calculation in CAFÉ debugging message

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Remove empty block ECC workaround

They fixed the hardware so that ECC doesn't fail on reading an empty
block.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Add ECC debugging for CAFÉ

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] CAFÉ NAND: Add 'slowtiming' parameter, default usedma and checkecc on

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Reset Café controller before initialising.

Fixes http://dev.laptop.org/ticket/237

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Café ECC -- remove spurious BUG_ON() in err_pos()

Being a value which isn't in the table is a case we explicitly check for
in the caller. Don't BUG_ON() because it does actually happen in
practice.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Fix nand_default_mark_blockbad() when flash-based BBT disabled

When a flash-based BBT is not used, nand_default_mark_blockbad() is supposed
to mark the block bad in the oob. However, it sets the wrong length variable
so that no bad block marker is in fact written. This patch attempts to
rectify that.

(As note, it seems to be that logically, it shouldn't be necessary to set
both length variables, as one appears to be for the main buffer, and
one for the oob buffer, but this is how it is done in several places,
including the code for the mtd character device MEMWRITEOOB and MEMREADOOB
ioctls. I'm not sure if this is a temporary solution during some rework of
the mtd infrastructure, or whether there is a deeper thought here.)

Signed-off-by: Ricard Wanderlöf <ricardw@axis.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Disable ECC checking on CAFÉ since it's broken for now

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: CAFÉ NAND driver cleanup, fix ECC on reading empty flash

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Add hardware ECC correction support to CAFÉ NAND driver

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

Merge git://git.infradead.org/~dwmw2/cafe-2.6

Conflicts:

drivers/mtd/nand/Kconfig

[MTD] NAND: Correct setting of chip->oob_poi OOB buffer

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: Combined oob buffer so it's contiguous with data

Ditch the separate oobrbuf and oobwbuf fields from the chip buffers,
and use only a single buffer immediately after the data. This accommodates
NAND controllers such as the OLPC CAFÉ chip, which can't do scatter/gather
DMA so needs the OOB buffer to be contiguous with the data, for both read
and write.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

Merge branch 'master' of git://git./linux/kernel/git/torvalds/linux-2.6

[MTD] NAND: nandsim: support subpage write

As flash cannot do 0->1 bit transitions when programming, do not do this in
the simulator too. This makes nandsim able to accept subpage writes.

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NOR: leave Intel chips in read-array mode on suspend

During some testing with several samsung s3c24xx based
devices it was discovered that often the
cfi_cmdset_0001.c would not leave the chip in
read-array mode on suspend. this is an issue if the
same flash chip is used for the bootloader that needs
to be read on resume.

Signed-off-by: David Anders <danders@amltd.com>
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] core: trivial comments fix

Signed-off-by: Artem Bityutskiy <dedekind@infradead.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: nandsim coding style fix

Removes line break after return type in function definitions, to be
consistent with the Linux coding style.

Signed-off-by: Vijay Kumar <vijaykumar@bravegnu.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: nandsim page-wise allocation (2/2)

For page wise allocation, an array of flash page pointers is allocated
during initialization. The flash pages are themselves allocated when a
write occurs to the page. The flash pages are deallocated when they
are erased.

Signed-off-by: Vijay Kumar <vijaykumar@bravegnu.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: nandsim page-wise allocation (1/2)

This patch removes code that does chip mapping. The chip mapping code
is no longer used.

Signed-off-by: Vijay Kumar <vijaykumar@bravegnu.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] MAPS: Remove ITE 8172G and Globespan IVR MTD support

This patch has removed ITE 8172G and Globespan IVR MTD support.
These boards support have already been removed.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Ralf Bächle <ralf@linux-mips.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] mtdchar: Fix MEMGETOOBSEL and ECCGETLAYOUT ioctls

1. The ECCGETLAYOUT ioctl copy_to_user() call has a superfluous '&'
causing the resulting information to be garbage rather than the intended
mtd->ecclayout.

2. The MEMGETOOBSEL misses copying mtd->ecclayout->eccbytes so the
resulting field of the returned structure contains garbage.

Signed-off-by: Ricard Wanderlöf <ricardw@axis.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] NAND: AT91 NAND driver

This version only differs from version posted by Savin Zlobec (20 Jun
2006) in that the AT91RM9200-specific chip-select / bus setup code has
been moved from the at91_nand.c driver into the processor-specific file.

From: Savin Zlobec <savin@epico.si>
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[JFFS2] Fix jffs2_follow_link() typo

typo fix: noticed this typo while reading the patch
"jffs2: fix symlink error handling"

Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] MAPS: esb2rom: use hotplug safe interfaces

Fairly self explanatory.  Keep a reference initially, drop it when we free up
the driver resources.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] JEDEC probe: fix comment typo (devic)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[JFFS2] Use rb_first() and rb_last() cleanup

Use rb_first() and rb_last() to implement frag_first() and frag_last().

Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] MAPS: Support for BIOS flash chips on Intel ESB2 southbridge

Add MTD map driver for BIOS flash chips connected to the Intel ESB2
southbridge.

[akpm@osdl.org: coding-style fixes, build fix]
Signed-off-by: Ryan Jackson <rjackson@lnxi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] CHIPS: Support for SST 49LF040B flash chip

Add chip driver and JEDEC probe support for the SST 49LF040B flash chip.

Signed-off-by: Ryan Jackson <rjackson@lnxi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[MTD] MAPS: Add parameter to amd76xrom to override rom window size

The 2 bits controlling the window size are often set to allow reading the
BIOS, but too small to allow writing, since the lock registers are 4MiB
lower in the address space than the data.  This is intended to prevent
flashing the bios, perhaps accidentally.

The bits are 6 and 7.  If both bits are set, it is a 5MiB window. If only
the 7 Bit is set, it is a 4MiB window.  Otherwise, it is a 64KiB window.

This parameter allows the driver to override the BIOS settings.

Signed-off-by: Ryan Jackson <rjackson@lnxi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

[PATCH] fix PXA2xx UDC compilation error

This was apparently missed by the move to the generic IRQ code.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] Fix up rpaphp driver for pci hotplug header move

Use grep instead of make during interface changes.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

configfs: handle kzalloc() failure in check_perm()

check_perm() does not drop the reference to the module when kzalloc()
failure occurs.

Signed-Off-By: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

ocfs2: cond_resched() in ocfs2_zero_extend()

The loop within ocfs2_zero_extend() can execute for a long time, causing
spurious soft lockup warnings.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

ocfs2: fix page zeroing during simple extends

The page zeroing code was missing the region between old i_size and new
i_size for those extends that didn't actually require a change in space
allocation.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

ocfs2: remove spurious d_count check in ocfs2_rename()

This was causing some folks to incorrectly get -EBUSY during rename.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

ocfs2: delete redundant memcmp()

This patch deletes redundant memcmp() while looking up in rb tree.

Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] Fix iounmap argument to const volatile.
  [MIPS] Reserve syscall numbers for kexec_load.
  [MIPS] Update tb0287_defconfig
  [MIPS] Update pnx8550-v2pci_defconfig
  [MIPS] Update pnx8500-jbs_defconfig
  [MIPS] More vr41xx pt_regs fixups
  [MIPS] save_context_stack fix
  [MIPS] Use compat_sys_mount.
  [MIPS] Fix O32 personality(2) call with 0xffffffff argument.
  [MIPS] A few more pt_regs fixups.
  [MIPS] Malta: Fix uninitialized regs pointer.
  [MIPS] Delete unneeded pt_regs forward declaration.
  [MIPS] Use kallsyms_lookup_size_offset() instead of kallsyms_lookup()

Revert "[mv643xx] Add pci device table for auto module loading."

This reverts commit 4596c75c23dde2623cbeec69357d5eb13d28387e as
requested by Olaf Hering. It causes compile errors, and says Olaf:

  "This change is also wrong, the autoloading works perfect with 2.6.18,
   no need to add random PCI ids.

   See commit a0245f7ad5214cb00131d7cd176446e067c913dc, platform devices
   have now a modalias entry in sysfs.  The network card is not a PCI
   device."

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  [CRYPTO] api: Select cryptomgr where needed
  [CRYPTO] api: fix crypto_alloc_base() return value

Merge git://git./linux/kernel/git/steve/gfs2-2.6-fixes

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes:
  [GFS2] gfs2_dir_read_data(): fix uninitialized variable usage
  [GFS2] fs/gfs2/ops_fstype.c:fill_super_meta(): fix NULL dereference
  [GFS2] fs/gfs2/dir.c:gfs2_dir_write_data(): don't use an uninitialized variable
  [GFS2] fs/gfs2/ops_fstype.c:gfs2_get_sb_meta(): remove unused variable
  [GFS2] fs/gfs2/dir.c:gfs2_dir_write_data(): remove dead code
  [GFS2] gfs2 endianness bug: be16 assigned to be32 field
  [GFS2] Fix bmap to map extents properly
  [DLM] fix iovec length in recvmsg

Merge /pub/scm/linux/kernel/git/davem/sparc-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Clean up asm-sparc/elf.h pollution in userspace.
  [SPARC64]: Fix of_ioremap().
  [SPARC64]: Compute dma_end argument to sabre_pbm_init() correctly.

Merge /pub/scm/linux/kernel/git/davem/net-2.6

* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (36 commits)
  [Bluetooth] Fix HID disconnect NULL pointer dereference
  [Bluetooth] Add missing entry for Nokia DTL-4 PCMCIA card
  [Bluetooth] Add support for newer ANYCOM USB dongles
  [NET]: Can use __get_cpu_var() instead of per_cpu() in loopback driver.
  [IPV4] inet_peer: Group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS
  [TCP]: One NET_INC_STATS() could be NET_INC_STATS_BH in tcp_v4_err()
  [NETFILTER]: Missing check for CAP_NET_ADMIN in iptables compat layer
  [NETPOLL]: initialize skb for UDP
  [IPV6]: Fix route.c warnings when multiple tables are disabled.
  [TG3]: Bump driver version and release date.
  [TG3]: Add lower bound checks for tx ring size.
  [TG3]: Fix set ring params tx ring size implementation
  [NET]: reduce per cpu ram used for loopback stats
  [IPv6] route: Fix prohibit and blackhole routing decision
  [DECNET]: Fix input routing bug
  [TCP]: Bound TSO defer time
  [IPv4] fib: Remove unused fib_config members
  [IPV6]: Always copy rt->u.dst.error when copying a rt6_info.
  [IPV6]: Make IPV6_SUBTREES depend on IPV6_MULTIPLE_TABLES.
  [IPV6]: Clean up BACKTRACK().
  ...

[PATCH] one more ARM IRQ fix

Fix one more compile breakage caused by the post -rc1 IRQ changes.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] knfsd: fix race that can disable NFS server

This patch is suitable for just about any 2.6 kernel.  It should go in
2.6.19 and 2.6.18.2 and possible even the .17 and .16 stable series.

This is a long standing bug that seems to have only recently become
apparent, presumably due to increasing use of NFS over TCP - many
distros seem to be making it the default.

The SK_CONN bit gets set when a listening socket may be ready
for an accept, just as SK_DATA is set when data may be available.

It is entirely possible for svc_tcp_accept to be called with neither
of these set.  It doesn't happen often but there is a small race in
svc_sock_enqueue as SK_CONN and SK_DATA are tested outside the
spin_lock.  They could be cleared immediately after the test and
before the lock is gained.

This normally shouldn't be a problem.  The sockets are non-blocking so
trying to read() or accept() when ther is nothing to do is not a problem.

However: svc_tcp_recvfrom makes the decision "Should I accept() or
should I read()" based on whether SK_CONN is set or not.  This usually
works but is not safe.  The decision should be based on whether it is
a TCP_LISTEN socket or a TCP_CONNECTED socket.

Signed-off-by: Neil Brown <neilb@suse.de>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: <stable@kernel.org>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] kernel/nsproxy.c: use kmemdup()

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] ext3/4: fix J_ASSERT(transaction->t_updates > 0) in journal_stop()

A disk generated some I/O error, after it, I hitted
J_ASSERT(transaction->t_updates > 0) in journal_stop().

It seems to happened on ext3_truncate() path from stack trace. Then,
maybe the following case may trigger J_ASSERT(transaction->t_updates > 0).

ext3_truncate()
    -> ext3_free_branches()
        -> ext3_journal_test_restart()
    -> ext3_journal_restart()
                -> journal_restart()
                transaction->t_updates--;
                /* another process aborted journal */
                    -> start_this_handle()
    returns -EROFS without transaction->t_updates++;

    -> ext3_journal_stop()
        -> journal_stop()
J_ASSERT(transaction->t_updates > 0)

If journal was aborted in middle of journal_restart(), ext3_truncate()
may trigger J_ASSERT().

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] mm: more commenting on lock ordering

Clarify lockorder comments now that sys_msync dropps mmap_sem before
calling do_fsync.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] firmware/dcdbas: add size check in smi_data_write

Add a size check in smi_data_write to prevent possible wrapping problems
with large pos values when calling smi_data_buf_realloc on 32-bit.

Signed-off-by: Doug Warzecha <Douglas_Warzecha@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] ipmi: fix return codes in failure case

These returns should be negative, like the others in this function.

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] mm: D-cache aliasing issue in cow_user_page

--=-=-=

 from mm/memory.c:
  1434  static inline void cow_user_page(struct page *dst, struct page *src, unsigned long va)
  1435  {
  1436          /*
  1437           * If the source page was a PFN mapping, we don't have
  1438           * a "struct page" for it. We do a best-effort copy by
  1439           * just copying from the original user address. If that
  1440           * fails, we just zero-fill it. Live with it.
  1441           */
  1442          if (unlikely(!src)) {
  1443                  void *kaddr = kmap_atomic(dst, KM_USER0);
  1444                  void __user *uaddr = (void __user *)(va & PAGE_MASK);
  1445
  1446                  /*
  1447                   * This really shouldn't fail, because the page is there
  1448                   * in the page tables. But it might just be unreadable,
  1449                   * in which case we just give up and fill the result with
  1450                   * zeroes.
  1451                   */
  1452                  if (__copy_from_user_inatomic(kaddr, uaddr, PAGE_SIZE))
  1453                          memset(kaddr, 0, PAGE_SIZE);
  1454                  kunmap_atomic(kaddr, KM_USER0);
  #### D-cache have to be flushed here.
  #### It seems it is just forgotten.

  1455                  return;
  1456
  1457          }
  1458          copy_user_highpage(dst, src, va);
  #### Ok here. flush_dcache_page() called from this func if arch need it
  1459  }

Following is the patch  fix this issue:

Signed-off-by: Dmitriy Monakhov <dmonakhov@openvz.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] doc: fixing cpu-hotplug documentation

Fixing cpu-hotplug documentation as follows:

 - moving confusing asterisk on additional_cpus descrition
 - fixing some typos
 - unifying indentation for source code and command line example

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] drivers/isdn: ioremap balanced with iounmap

ioremap must be balanced by an iounmap and failing to do so can result
in a memory leak.

Signed-off-by: Amol Lad <amol@verismonetworks.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] highest_possible_node_id() linkage fix

Qooting Adrian:

- net/sunrpc/svc.c uses highest_possible_node_id()

- include/linux/nodemask.h says highest_possible_node_id() is
  out-of-line #if MAX_NUMNODES > 1

- the out-of-line highest_possible_node_id() is in lib/cpumask.c

- lib/Makefile: lib-$(CONFIG_SMP) += cpumask.o
  CONFIG_ARCH_DISCONTIGMEM_ENABLE=y, CONFIG_SMP=n, CONFIG_SUNRPC=y

-> highest_possible_node_id() is used in net/sunrpc/svc.c
   CONFIG_NODES_SHIFT defined and > 0

-> include/linux/numa.h: MAX_NUMNODES > 1

-> compile error

The bug is not present on architectures where ARCH_DISCONTIGMEM_ENABLE
depends on NUMA (but m32r isn't the only affected architecture).

So move the function into page_alloc.c

Cc: Adrian Bunk <bunk@stusta.de>
Cc: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] Fix potential interrupts during alternative patching

Interrupts must be disabled during alternative instruction patching.  On
systems with high timer IRQ rates, or when running in an emulator, timing
differences can result in random kernel panics because of running partially
patched instructions.  This doesn't yet fix NMIs, which requires extricating
the patch code from the late bug checking and is logically separate (and also
less likely to cause problems).

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: nfs_replay_me

We are using NFS_REPLAY_ME as a special error value that is never leaked to
clients.  That works fine; the only problem is mixing host- and network-
endian values in the same objects.  Network-endian equivalent would work just
as fine; switch to it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: misc endianness annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: nfsd callback*

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: NFSv4 errno endianness annotations

don't use the same variable to store NFS and host error values

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: NFSv{2,3} trivial endianness annotations for error values

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: nfs4 code returns error values in net-endian

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: vfs.c endianness annotations

don't use the same variable to store NFS and host error values

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: NFSv4 server

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: NFSv3 server

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: NFSv2 server

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: nfsd_dispatch()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsfh simple endianness annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfsd: nfserrno() endianness annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfs_common endianness annotations

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: mount_clnt

[pulled from Alexey's patch]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] nfs: verifier is network-endian

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: fs/nfs/callback*

on-the-wire data is big-endian

[mostly pulled from Alexey's patch]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] fs/nfs/callback* passes error values big-endian

[pulled from Alexey's patch]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

[PATCH] xdr annotations: NFS readdir entries

on-the-wire data is big-endian

[in large part pulled from Alexey's patch]

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Trond Myklebust <trond.myklebust@fys.uio.no>
Acked-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>