Xattr code has not been tested for a while and there were
serveral bugs. One of them is using wrong inode in
'ubifs_jnl_change_xattr()'. The other is a deadlock in
'ubifs_setxattr()': the i_mutex is locked in
'cap_inode_need_killpriv()' path, so deadlock happens when
'ubifs_setxattr()' tries to lock it again.

Thanks to Zoltan Sogor for finding these bugs.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Commit d70b67c8 fixed VFS and
it never calls FS lookup function in deleted directories now.
We may remove corresponding UBIFS check.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Data length has to be aligned in the budgeting request. Code
in xattr.c did not do this.
Signed-off-by: Zoltan Sogor <weth@inf.u-szeged.hu>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Use "if (0) printk()" construct in debugging print macros to
make the debugging messages be checked even if debugging is
off.

This patch also removes some unneeded spaces and blank lines.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

UBIFS does not presently re-use inode numbers, so leaving
i_generation zero is most appropriate for now.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>

Signed-off-by: Zoltan Sogor <weth@inf.u-szeged.hu>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

No functional changes, just lessen the amount of indentations.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

At the moment UBIFS reserves twice old index size space for the
index. But this is not enough in some cases, because if the indexing
node are very fragmented and there are many small gaps, while the
dirty index has big znodes - in-the-gaps method would fail.

Thus, reserve trise as more, in which case we are guaranteed that
we can commit in any case.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Useful when something fails and there are many processes
racing.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

UBIFS aligns node lengths to 8, so budgeting has to do the
same. Well, direntry, inode, and page budgets are already
aligned, but not inode data budget (e.g., data in special
devices or symlinks). Do this for inode data as well.
Also, add corresponding debugging checks.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Budgeting is a crucial UBIFS subsystem - add more assertions
to improve requests checking. This is not compiled in when
UBIFS debugging is disabled.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

The debug function that checks orphans, does so using the
TNC mutex. That means it will not see a correct picture
if the inode is removed from the orphan tree before it is
removed from TNC.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>

The values in these two fields need to be preserved independently
and so a union cannot be used.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>

Every time anything is deleted, UBIFS writes the deletion inode
node twice - once in 'ubifs_jnl_update()' and the second time in
'ubifs_jnl_write_inode()'. However, the second write is not needed
if no commit happened after 'ubifs_jnl_update()'. This patch
checks that condition and avoids writing the deletion inode for
the second time.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Increment the commit number at the beginnig of the commit, instead
of doing this after the commit. This is needed for further
optimizations.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

The 'last_reference' parameter of 'pack_inode()' is not really
needed because 'inode->i_nlink' may be tested instead. Zap it.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Simplify 'ubifs_jnl_write_inode()' by removing the 'deletion'
parameter which is not really needed because we may test
inode->i_nlink and check whether this is a deletion or not.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Orphan inodes are deleted inodes which will disappear after FS
re-mount. There is not need to write orphan inodes back, because
they are not needed on the flash media.

So optimize orphans a little by not writing them back. Just mark
them as clean, free the budget, and report success to VFS.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

We use ubifs_ro_mode() quite a lot, and not in fast-path, so
there is no reason to blow the code up by having it inlined.
Also, we usually want R/O mode change to be seen to other
CPUs as soon as possible, so when we make this a function
call, we will automatically have a memory barrier.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

UBI transparently handles write errors by automatically copying
and remapping the affected eraseblock. If UBI is unable to do
that, for example its pool of eraseblocks reserved for bad block
handling is empty, then the error is propagated to UBIFS. UBIFS
must protect the media from falling into an inconsistent state
by immediately switching to read-only mode. In the case of log
updates, this was not being done.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>

UBIFS recovery testing debug facility simulates media failures.
When simulating an IO error, the error code returned must be
-EIO but it was not always if the user switched off the
debug recovery testing option at the same time.
Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>

Although the inode is marked as clean when it is being deleted,
it might stay and be used as orphan, and be marked as dirty.
So we have to free the budget when we delete it.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

1. Print inode mode in some of debugging messages
2. Add few more useful assertions
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

The 'ubifs_release_dirty_inode_budget()' was buggy and incorrectly
freed the budget, which led to not freeing all dirty data budget.
This patch fixes that.

Also, this patch fixes ubifs_mkdir() which passed 1 in dirty_ino_d,
which makes no sense. Well, it is harmless though.

Also, add few more useful assertions. And improve few debugging
messages.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

We encouredge people to mount using volume name, not device
numbers. So print the name of the mounted UBI volume, not just
IDs.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

* 'for-2.6.27' of git://linux-nfs.org/~bfields/linux:
  fs/nfsd/export.c: Adjust error handling code involving auth_domain_put
  MAINTAINERS: mention lockd and sunrpc in nfs entries
  lockd: trivial sparse endian annotations

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/ehca: Discard double CQE for one WR
  IB/ehca: Check idr_find() return value
  IB/ehca: Repoll CQ on invalid opcode
  IB/ehca: Rename goto label in ehca_poll_cq_one()
  IB/ehca: Update qp_state on cached modify_qp()
  IPoIB/cm: Use vmalloc() to allocate rx_rings

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] use bcd2bin/bin2bcd
  [IA64] Ensure cpu0 can access per-cpu variables in early boot code

Various cleanup the drivers/firmware/memmap (after review by AKPM):

    - fix kdoc to conform to the standard
    - move kdoc from header to implementation files
    - remove superfluous WARN_ON() after kmalloc()
    - WARN_ON(x); if (!x) -> if(!WARN_ON(x))
    - improve some comments
Signed-off-by: Bernhard Walle <bwalle@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

My Sun Netra T1 AC200 has one of these... bit harsh not letting me use it
and all :)

==========
alex@woodchuck:~$ lspci -nn
00:01.0 PCI bridge [0604]: Sun Microsystems Computer Corp. Simba Advanced PCI Bridge [108e:5000] (rev 13)
00:01.1 PCI bridge [0604]: Sun Microsystems Computer Corp. Simba Advanced PCI Bridge [108e:5000] (rev 13)
01:03.0 Non-VGA unclassified device [0000]: ALi Corporation M7101 Power Management Controller [PMU] [10b9:7101]
01:05.1 Ethernet controller [0200]: Sun Microsystems Computer Corp. RIO GEM [108e:1101] (rev 01)
01:05.3 USB Controller [0c03]: Sun Microsystems Computer Corp. RIO USB [108e:1103] (rev 01)
01:07.0 ISA bridge [0601]: ALi Corporation M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] [10b9:1533]
01:0c.0 Bridge [0680]: Sun Microsystems Computer Corp. RIO EBUS [108e:1100] (rev 01)
01:0c.1 Ethernet controller [0200]: Sun Microsystems Computer Corp. RIO GEM [108e:1101] (rev 01)
01:0c.3 USB Controller [0c03]: Sun Microsystems Computer Corp. RIO USB [108e:1103] (rev 01)
01:0d.0 IDE interface [0101]: ALi Corporation M5229 IDE [10b9:5229] (rev c3)
02:08.0 SCSI storage controller [0100]: LSI Logic / Symbios Logic 53C896/897 [1000:000b] (rev 07)
02:08.1 SCSI storage controller [0100]: LSI Logic / Symbios Logic 53C896/897 [1000:000b] (rev 07)
==========
Signed-off-by: Alexander Clouter <alex@digriz.org.uk>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The attached patch seems to already exist in a number of branches -- it
keeps popping up on Google for me, and is certainly already in Debian --
but is strangely absent from mainstream.

The problem appears to be that the patched file ends up as part of the
target toolchain, but unfortunately the gcc constant folding doesn't
appear to eliminate the __invalid_size_argument_for_IOC value early
enough.  Certainly compiling C++ programs which use _IO...  macros as
constants fails without this patch.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix printf format type warnings (seen on alpha & ia64):

Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 6 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 7 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 8 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 9 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 12 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 13 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 16 has type '__u64'
Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 17 has type '__u64'
Documentation/accounting/getdelays.c:214: warning: format '%15llu' expects type 'long long unsigned int', but argument 4 has type '__u64'
Documentation/accounting/getdelays.c:214: warning: format '%15llu' expects type 'long long unsigned int', but argument 5 has type '__u64'
Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 2 has type '__u64'
Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type '__u64'
Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 4 has type '__u64'
Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 5 has type '__u64'
Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 6 has type '__u64'
Documentation/accounting/getdelays.c:236: warning: 'cmd_type' may be used uninitialized in this function
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Fix differing signedness warning:

Documentation/pcmcia/crc32hash.c:29: warning: pointer targets in passing argument 1 of 'crc32' differ in signedness
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/networking/ifenslave.c:1084: warning: pointer targets in assignment differ in signedness

>From include/linux/socket.h:
 *	1003.1g requires sa_family_t and that sa_data is char.

and from SUSv3:
(http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/socket.h.html)

The <sys/socket.h> header shall define the sockaddr structure that includes at least the following members:

sa_family_t  sa_family  Address family.
char         sa_data[]  Socket address (variable-length data).
<end SUSv3>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Add MODULE_LICENSE() to DocBook/procfs_example.c since modpost complained
about a missing license there.

Remove tty procfs removal since the creation was deleted long ago
(http://git.kernel.org/?p=linux/kernel/git/tglx/history.git;a=commitdiff;h=5ad9cb65e9b15e5b83e2dd1c10a4bcaccc4ec644).
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: <J.A.K.Mouw@its.tudelft.nl>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>