Commit Graph

194 Commits

Author SHA1 Message Date
Jens Axboe
b6e51316da writeback: separate starting of sync vs opportunistic writeback
bdi_start_writeback() is currently split into two paths, one for
WB_SYNC_NONE and one for WB_SYNC_ALL. Add bdi_sync_writeback()
for WB_SYNC_ALL writeback and let bdi_start_writeback() handle
only WB_SYNC_NONE.

Push down the writeback_control allocation and only accept the
parameters that make sense for each function. This cleans up
the API considerably.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16 15:18:52 +02:00
Jens Axboe
32a88aa1b6 fs: Assign bdi in super_block
We do this automatically in get_sb_bdev() from the set_bdev_super()
callback. Filesystems that have their own private backing_dev_info
must assign that in ->fill_super().

Note that ->s_bdi assignment is required for proper writeback!

Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-16 15:18:51 +02:00
Jens Axboe
d993831fa7 writeback: add name to backing_dev_info
This enables us to track who does what and print info. Its main use
is catching dirty inodes on the default_backing_dev_info, so we can
fix that up.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11 09:20:26 +02:00
Jens Axboe
d8a8559cd7 writeback: get rid of generic_sync_sb_inodes() export
This adds two new exported functions:

- writeback_inodes_sb(), which only attempts to writeback dirty inodes on
  this super_block, for WB_SYNC_NONE writeout.
- sync_inodes_sb(), which writes out all dirty inodes on this super_block
  and also waits for the IO to complete.

Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-09-11 09:20:25 +02:00
Alexey Dobriyan
405f55712d headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
  It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT

  This will make hardirq.h inclusion cheaper for every PREEMPT=n config
  (which includes allmodconfig/allyesconfig, BTW)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-12 12:22:34 -07:00
Artem Bityutskiy
0611254760 UBIFS: fix corruption dump
In the 'ubifs_recover_leb()' function, when we find corrupted
empty space, we dump 8K starting from the offset where the last
node ends. This is OK if the corrupted empty space is somewhere
near that offset. But if the corruption is far at the end of the
LEB, we will dump all 0xFF bytes and complitely ignore the
interesting data. This is observed on a PPC ("kilauea") with
NOR flash.

This patch changes the behavior and teaches UBIFS to print only
interesting data. I.e., now we find where corruption starts and
start dumping from that offset.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-07-09 09:19:39 +03:00
Artem Bityutskiy
431102fed3 UBIFS: clean up free space checking
recovery.c has 'is_empty()' helper and it is better to use
this helper instead of re-implementing it in several places.
This patch does this and removes some amount of unneeded code.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-07-09 09:19:38 +03:00
Artem Bityutskiy
ed43f2f06c UBIFS: small amendments in the LEB scanning code
This patch fixes few minor things I've spotted while going through
code:

1. Better document return codes
2. If 'ubifs_scan_a_node()' returns some thing we do not expect,
   treat this as an error.
3. Try to do recovery only when 'ubifs_scan()' returns %-EUCLEAN,
   not on any error.
4. If empty space starts at a non-aligned address, print a message.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-07-09 09:19:38 +03:00
Artem Bityutskiy
086b3640c1 UBIFS: dump a little more in case of corruptions
In case of corruptions, dump 8192 bytes instead of 4096. The
largest node is 4096+ bytes, so it is better to see a node
boundary, which is not always possible when only 4096 bytes
are printed.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-07-09 09:19:38 +03:00
Daniel Mack
7fcd9c3ecb UBIFS: allow more than one volume to be mounted
UBIFS uses a bdi device per volume, but does not care to hand out unique
names to each of them. This causes an error when trying to mount more
than one volumes. Append the UBI volume and device ID to avoid that.

[Amended a bit by Artem Bityutskiy]

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Cc: Adrian Hunter <ext-adrian.hunter@nokia.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:19 +03:00
Artem Bityutskiy
1fb8bd01ed UBIFS: fix assertion warning
When debugging is enabled and an unclean file-system is mounter,
the following assertion is triggered:

UBIFS assert failed in ubifs_tnc_start_commit at 805 (pid 1081)
Call Trace:
[cfaffbd0] [c0006cf8] show_stack+0x44/0x16c (unreliable)
[cfaffc10] [c011b738] ubifs_tnc_start_commit+0xbb8/0xd18
[cfaffc90] [c0112670] do_commit+0x150/0xa44
[cfaffd10] [c0125234] ubifs_rcvry_gc_commit+0xd8/0x544
[cfaffd60] [c0100e9c] ubifs_fill_super+0xe78/0x15f8
[cfaffdf0] [c0102118] ubifs_get_sb+0x20c/0x320
[cfaffe70] [c007f764] vfs_kern_mount+0x58/0xe0
[cfaffe90] [c007f83c] do_kern_mount+0x40/0xf8
[cfaffeb0] [c0095c24] do_mount+0x550/0x758
[cfafff10] [c0095ebc] sys_mount+0x90/0xe0
[cfafff40] [c000ed4c] ret_from_syscall+0x0/0x3c

The reason is that we initialize 'c->min_leb_idx' early, and do
not re-calculate it after journal replay.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:19 +03:00
Adrian Hunter
681947d2fa UBIFS: minor spelling and grammar fixes
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
2009-07-05 18:45:18 +03:00
Adrian Hunter
4473758944 UBIFS: fix 64-bit divisions in debug print
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
2009-07-05 18:45:18 +03:00
Artem Bityutskiy
cb54ef8b13 UBIFS: few spelling fixes
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:18 +03:00
Artem Bityutskiy
2a35a3a8ab UBIFS: set write-buffer timout to 3-5 seconds
This patch cleans up write-buffer timeout initialization and
sets it to 3-5 interval.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:17 +03:00
Artem Bityutskiy
0b335b9d7d UBIFS: slightly optimize write-buffer timer usage
This patch adds the following minor optimization:

1. If write-buffer does not use the timer, indicate it with the
   wbuf->no_timer variable, instead of using the wbuf->softlimit
   variable. This is better because wbuf->softlimit is of ktime_t
   type, and the ktime_to_ns function contains 64-bit multiplication.

2. Do not call the 'hrtimer_cancel()' function for write-buffers
   which do not use timers.

3. Do not cancel the timer in 'ubifs_put_super()' because the
   synchronization function does this.

This patch also removes a confusing comment.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:16 +03:00
Artem Bityutskiy
70aee2f153 UBIFS: improve debugging messaged
1. Make the I/O debugging message print the journal head number.
2. Add prints to timer functions.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:16 +03:00
Adrian Hunter
e3dc5a665d UBIFS: fix integer overflow warning
Fix the following warning:

fs/ubifs/io.c: In function 'ubifs_wbuf_init':
fs/ubifs/io.c:860: warning: integer overflow in expression

And limit maximum hrtimer delta to ULONG_MAX because the
argument is 'unsigned long'.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-07-05 18:45:15 +03:00
Al Viro
073aaa1b14 helpers for acl caching + switch to those
helpers: get_cached_acl(inode, type), set_cached_acl(inode, type, acl),
forget_cached_acl(inode, type).

ubifs/xattr.c needed includes reordered, the rest is a plain switchover.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24 08:17:07 -04:00
Linus Torvalds
b7c142dbf1 Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
* 'linux-next' of git://git.infradead.org/ubifs-2.6:
  UBIFS: start using hrtimers
  hrtimer: export ktime_add_safe
  UBIFS: do not forget to register BDI device
  UBIFS: allow sync option in rootflags
  UBIFS: remove dead code
  UBIFS: use anonymous device
  UBIFS: return proper error code if the compr is not present
  UBIFS: return error if link and unlink race
  UBIFS: reset no_space flag after inode deletion
2009-06-17 09:46:33 -07:00
Jens Axboe
a979eff181 ubifs: register backing_dev_info
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2009-06-16 08:21:04 +02:00
Alessio Igor Bogani
337eb00a2c Push BKL down into ->remount_fs()
[xfs, btrfs, capifs, shmem don't need BKL, exempt]

Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-11 21:36:11 -04:00
Christoph Hellwig
6cfd014842 push BKL down into ->put_super
Move BKL into ->put_super from the only caller.  A couple of
filesystems had trivial enough ->put_super (only kfree and NULLing of
s_fs_info + stuff in there) to not get any locking: coda, cramfs, efs,
hugetlbfs, omfs, qnx4, shmem, all others got the full treatment.  Most
of them probably don't need it, but I'd rather sort that out individually.
Preferably after all the other BKL pushdowns in that area.

[AV: original used to move lock_super() down as well; these changes are
removed since we don't do lock_super() at all in generic_shutdown_super()
now]
[AV: fuse, btrfs and xfs are known to need no damn BKL, exempt]

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-11 21:36:07 -04:00
Christoph Hellwig
5af7926ff3 enforce ->sync_fs is only called for rw superblock
Make sure a superblock really is writeable by checking MS_RDONLY
under s_umount.  sync_filesystems needed some re-arragement for
that, but all but one sync_filesystem caller had the correct locking
already so that we could add that check there.  cachefiles grew
s_umount locking.

I've also added a WARN_ON to sync_filesystem to assert this for
future callers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-11 21:36:06 -04:00
Artem Bityutskiy
f2c5dbd7b7 UBIFS: start using hrtimers
UBIFS uses timers for write-buffer write-back. It is not
crucial for us to write-back exactly on time. We are fine
to write-back a little earlier or later. And this means
we may optimize UBIFS timer so that it could be groped
with a close timer event, so that the CPU would not be
waken up just to do the write back. This is optimization
to lessen power consumption, which is important in
embedded devices UBIFS is used for.

hrtimers have a nice feature: they are effectively range
timers, and we may defind the soft and hard limits for
it. Standard timers do not have these feature. They may
only be made deferrable, but this means there is effectively
no hard limit. So, we will better use hrtimers.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-06-08 11:14:58 +03:00
Artem Bityutskiy
3f36406f26 UBIFS: do not forget to register BDI device
Reviewed-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-06-08 11:14:21 +03:00
Artem Bityutskiy
8379ea31e9 UBIFS: allow sync option in rootflags
When passing UBIFS parameters via kernel command line, the
sync option will be passed to UBIFS as a string, not as an
MS_SYNCHRONOUS flag. Teach UBIFS interpreting this flag.

Reported-by: Aurélien GÉRÔME <ag@debian.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-06-02 11:08:07 +03:00
Artem Bityutskiy
428ff9d2e3 UBIFS: remove dead code
UBIFS assumes that @c->min_io_size is 8 in case of NOR flash. This
is because UBIFS alignes all nodes to 8-byte boundary, and maintaining
@c->min_io_size introduced unnecessary complications.

This patch removes senseless constructs like:

if (c->min_io_size == 1)
	NOR-specific code

Also, few commentaries amendments.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-05-29 14:38:37 +03:00
Artem Bityutskiy
7c83f5cb55 UBIFS: use anonymous device
UBIFS has erroneuosly set 'sb->s_dev' to the UBI volume
character device major/minor. This may lead to clashes
if there is another FS mounted to a block device with
the same major/minor numbers. User-space programs which
use 'stat->st_dev' may get confused because of this.

This problem was found by Al Viro. He also pointed the
way to fix the problem - use 'set_anon_super()' and
'kill_anon_super()' VFS helpers.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-05-26 12:37:11 +03:00
Corentin Chary
8eec2f36fb UBIFS: return proper error code if the compr is not present
If the compressor is not present, mount_ubifs need
to return an error code. This way ubifs_fill_super
will stop and handle the error.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-05-25 12:28:27 +03:00
Hunter Adrian
8b3884a841 UBIFS: return error if link and unlink race
Consider a scenario when 'vfs_link(dirA/fileA)' and
'vfs_unlink(dirA/fileA, dirB/fileB)' race. 'vfs_link()' does not
lock 'dirA->i_mutex', so this is possible. Both of the functions
lock 'fileA->i_mutex' though. Suppose 'vfs_unlink()' wins, and takes
'fileA->i_mutex' mutex first. Suppose 'fileA->i_nlink' is 1. In this
case 'ubifs_unlink()' will drop the last reference, and put 'inodeA'
to the list of orphans. After this, 'vfs_link()' will link
'dirB/fileB' to 'inodeA'. Thir is a problem because, for example,
the subsequent 'vfs_unlink(dirB/fileB)' will add the same inode
to the list of orphans.

This problem was reported by J. R. Okajima <hooanon05@yahoo.co.jp>

[Artem: add more comments, amended commit message]

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-05-19 11:01:31 +03:00
Al Viro
6f5bbff9a1 Convert obvious places to deactivate_locked_super()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-05-09 10:49:40 -04:00
Adrian Hunter
6d6cb0d688 UBIFS: reset no_space flag after inode deletion
When UBIFS runs out of space it spends a lot of time trying to
find more space before returning ENOSPC.  As there is no point
repeating that unless something has changed, UBIFS has an
optimization to record that the file system is 100% full and not
try to find space.  That flag was not being reset when a pending
deletion was finally done.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Reviewed-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-05-06 10:37:56 +03:00
Linus Torvalds
e0724bf6e4 Merge branch 'linux-next' of git://git.infradead.org/ubifs-2.6
* 'linux-next' of git://git.infradead.org/ubifs-2.6:
  UBIFS: fix recovery bug
  UBIFS: add R/O compatibility
  UBIFS: fix compiler warnings
  UBIFS: fully sort GCed nodes
  UBIFS: fix commentaries
  UBIFS: introduce a helpful variable
  UBIFS: use KERN_CONT
  UBIFS: fix lprops committing bug
  UBIFS: fix bogus assertion
  UBIFS: fix bug where page is marked uptodate when out of space
  UBIFS: amend key_hash return value
  UBIFS: improve find function interface
  UBIFS: list usage cleanup
  UBIFS: fix dbg_chk_lpt_sz()
2009-04-06 15:00:19 -07:00
Linus Torvalds
811158b147 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (28 commits)
  trivial: Update my email address
  trivial: NULL noise: drivers/mtd/tests/mtd_*test.c
  trivial: NULL noise: drivers/media/dvb/frontends/drx397xD_fw.h
  trivial: Fix misspelling of "Celsius".
  trivial: remove unused variable 'path' in alloc_file()
  trivial: fix a pdlfush -> pdflush typo in comment
  trivial: jbd header comment typo fix for JBD_PARANOID_IOFAIL
  trivial: wusb: Storage class should be before const qualifier
  trivial: drivers/char/bsr.c: Storage class should be before const qualifier
  trivial: h8300: Storage class should be before const qualifier
  trivial: fix where cgroup documentation is not correctly referred to
  trivial: Give the right path in Documentation example
  trivial: MTD: remove EOL from MODULE_DESCRIPTION
  trivial: Fix typo in bio_split()'s documentation
  trivial: PWM: fix of #endif comment
  trivial: fix typos/grammar errors in Kconfig texts
  trivial: Fix misspelling of firmware
  trivial: cgroups: documentation typo and spelling corrections
  trivial: Update contact info for Jochen Hein
  trivial: fix typo "resgister" -> "register"
  ...
2009-04-03 15:24:35 -07:00
Nick Piggin
c2ec175c39 mm: page_mkwrite change prototype to match fault
Change the page_mkwrite prototype to take a struct vm_fault, and return
VM_FAULT_xxx flags.  There should be no functional change.

This makes it possible to return much more detailed error information to
the VM (and also can provide more information eg.  virtual_address to the
driver, which might be important in some special cases).

This is required for a subsequent fix.  And will also make it easier to
merge page_mkwrite() with fault() in future.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <joel.becker@oracle.com>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Cc: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-01 08:59:14 -07:00
Adrian Hunter
de0975781a UBIFS: fix recovery bug
UBIFS did not recovery in a situation in which it could
have. The relevant function assumed there could not be
more nodes in an eraseblock after a corrupted node, but
in fact the last (NAND) page written might contain anything.
The correct approach is to check for empty space (0xFF bytes)
from then on.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
2009-03-31 14:58:40 +03:00
Matt LaPlante
692105b8ac trivial: fix typos/grammar errors in Kconfig texts
Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-30 15:22:01 +02:00
Sukadev Bhattiprolu
a3ec947c85 vfs: simple_set_mnt() should return void
simple_set_mnt() is defined as returning 'int' but always returns 0.
Callers assume simple_set_mnt() never fails and don't properly cleanup if
it were to _ever_ fail.  For instance, get_sb_single() and get_sb_nodev()
should:

        up_write(sb->s_unmount);
        deactivate_super(sb);

if simple_set_mnt() fails.

Since simple_set_mnt() never fails, would be cleaner if it did not
return anything.

[akpm@linux-foundation.org: fix build]
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-03-27 14:44:03 -04:00
Artem Bityutskiy
963f0cf6d1 UBIFS: add R/O compatibility
Now UBIFS is supported by u-boot. If we ever decide to change the
media format, then people will have to upgrade their u-boots to
mount new format images. However, very often it is possible to
preserve R/O forward-compatibility, even though the write
forward-compatibility is not preserved.

This patch introduces a new super-block field which stores the
R/O compatibility version.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Acked-by: Adrian Hunter <Adrian.Hunter@nokia.com>
2009-03-26 16:36:20 +02:00
Hunter Adrian
fcabb3479e UBIFS: fix compiler warnings
fs/ubifs/super.c: In function ‘ubifs_show_options’:
fs/ubifs/super.c:425: warning: format not a string literal and no format arguments
fs/ubifs/super.c: In function ‘mount_ubifs’:
fs/ubifs/super.c:1204: warning: format not a string literal and no format arguments
fs/ubifs/super.c: In function ‘ubifs_remount_rw’:
fs/ubifs/super.c:1557: warning: format not a string literal and no format arguments

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-20 19:13:21 +02:00
Artem Bityutskiy
f10770f5e5 UBIFS: fully sort GCed nodes
The 'joinup()' function cannot deal with situations when nodes
go in reverse order - it just leaves them in this order. This
patch implement full nodes sorting using n*log(n) algorithm.
It sorts data nodes for bulk-read, and direntry nodes for
readdir().

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-20 19:12:00 +02:00
Artem Bityutskiy
7d4e9ccb43 UBIFS: fix commentaries
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-20 19:11:12 +02:00
Artem Bityutskiy
fb1cd01a33 UBIFS: introduce a helpful variable
This patch introduces a helpful @c->idx_leb_size variable.
The patch also fixes some spelling issues and makes comments
use "LEB" instead of "eraseblock", which is more correct.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-16 10:52:02 +02:00
Artem Bityutskiy
c9927c3ee2 UBIFS: use KERN_CONT
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-16 10:52:02 +02:00
Artem Bityutskiy
0a6fb8d9c4 UBIFS: fix lprops committing bug
When writing lprop nodes, do not forget to set @from to 0 when
switching the LEB. This fixes the following bug:

UBIFS error (pid 27768): ubifs_leb_write: writing -15456 bytes at 16:15880, error -22
UBIFS error (pid 27768): do_commit: commit failed, error -22
UBIFS warning (pid 27768): ubifs_ro_mode: switched to read-only mode, error -22
Pid: 27768, comm: freespace Not tainted 2.6.29-rc4-ubifs-2.6 #43
Call Trace:
 [<ffffffffa00c46d6>] ubifs_ro_mode+0x54/0x56 [ubifs]
 [<ffffffffa00cfa16>] do_commit+0x4f5/0x50a [ubifs]
 [<ffffffffa00cfae7>] ubifs_run_commit+0xbc/0xdb [ubifs]
 [<ffffffffa00d42b9>] ubifs_budget_space+0x742/0x9ed [ubifs]
 [<ffffffff812daf45>] ? __mutex_lock_common+0x361/0x3ae
 [<ffffffffa00bc437>] ? ubifs_write_begin+0x18d/0x44c [ubifs]
 [<ffffffffa00bc5cb>] ubifs_write_begin+0x321/0x44c [ubifs]
 [<ffffffff8106222b>] ? trace_hardirqs_on_caller+0x1f/0x14d
 [<ffffffff81097ce2>] generic_file_buffered_write+0x12f/0x2d9
 [<ffffffff8109828d>] __generic_file_aio_write_nolock+0x261/0x295
 [<ffffffff81098aff>] generic_file_aio_write+0x69/0xc5
 [<ffffffffa00bb914>] ubifs_aio_write+0x14c/0x19e [ubifs]
 [<ffffffff810c8f42>] do_sync_write+0xe7/0x12d
 [<ffffffff81055378>] ? autoremove_wake_function+0x0/0x38
 [<ffffffff81149edc>] ? security_file_permission+0x11/0x13
 [<ffffffff810c9827>] vfs_write+0xab/0x105
 [<ffffffff810c9945>] sys_write+0x47/0x6f
 [<ffffffff8100c35b>] system_call_fastpath+0x16/0x1b

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-16 10:51:51 +02:00
Artem Bityutskiy
b221337ae4 UBIFS: fix bogus assertion
Empty journal head LEBs are accounted as taken empty as well, so
the GC LEB does not have to be the only taken empty LEB when
nounting/remounting.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-15 17:20:22 +02:00
Adrian Hunter
f55aa59106 UBIFS: fix bug where page is marked uptodate when out of space
UBIFS fast path in write_begin may mark a page up to date
and then discover that there may not be enough space to do
the write, and so fall back to a slow path.  The slow path
tries harder, but may still find no space - leaving the page
marked up to date, when it is not.  This patch ensures that
the page is marked not up to date in that case.

The bug that this patch fixes becomes evident when the write
is into a hole (sparse file) or is at the end of the file
and a subsequent read is off the end of the file.  In both
cases, the file system should return zeros but was instead
returning the page that had not been written because the
file system was out of space.

Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-14 16:46:33 +02:00
Artem Bityutskiy
cb4f952db3 UBIFS: amend key_hash return value
... which should be uint32_t, not int.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-08 13:29:41 +02:00
Artem Bityutskiy
3edaae7c5b UBIFS: improve find function interface
Make 'ubifs_find_free_space()' return offset where free space starts,
rather than the amount of free space. This is just more appropriat
for its caller.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
2009-03-08 13:29:09 +02:00