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  1. 03 Sep, 2009 1 commit
  3. 24 Aug, 2009 4 commits
  5. 13 Jul, 2009 1 commit
    • Alexey Dobriyan's avatar
      "[PATCH] Fix leaks on /proc/{*/sched,sched_debug,timer_list,timer_stats}" and · b8a12a62
      Alexey Dobriyan authored 
      "[PATCH] Fix leak on /proc/lockdep_stats" fixed 5 leaks which happen if one
uses single_open() as .open function and seq_release() as .release function.

Let's add small amount of runtime checking.

Sample output is:

	memory leak: 'timer_list'
	WARNING: at fs/seq_file.c:289 seq_release()
	 [<c015e311>] seq_release+0x53/0x68
	 [<c0171bd8>] proc_reg_release+0x63/0x74
	 [<c0149877>] __fput+0x28/0xd3
	 [<c0147681>] filp_close+0x48/0x4f
	 [<c014876a>] sys_close+0x74/0xbe
	 [<c010248e>] sysenter_past_esp+0x5f/0x85
	 =======================
Signed-off-by: default avatarAlexey Dobriyan <adobriyan@sw.ru>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      b8a12a62
  7. 15 May, 2007 1 commit
    • Hugh Dickins's avatar
      Jayson Santos has sighted mm/prio_tree.c:78,79 BUGs (kernel bugzilla 8446), · 8920170a
      Hugh Dickins authored 
      and one was sighted a couple of years ago.  No reason yet to suppose
they're prio_tree bugs, but we can't tell much about them without seeing
the vmas.

So dump vma and the one it's supposed to resemble: I had expected to use
print_hex_dump(), but that's designed for u8 dumps, whereas almost every
field of vm_area_struct is either a pointer or an unsigned long - which
look nonsense dumped as u8s.

Replace the two BUG_ONs by a single WARN_ON; and if it fires, just keep
this vma out of the tree (truncation and swapout won't be able to find it).
 How safe this is depends on what the error really is; but we hold a file's
i_mmap_lock here, so it may be impossible to recover from BUG_ON.
Signed-off-by: default avatarHugh Dickins <hugh@veritas.com>
Cc: Jayson Santos <jaysonsantos2003@yahoo.com.br>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      8920170a
  9. 13 Jul, 2009 1 commit
    • Linus Torvalds's avatar
      The all-ones value is not just a "device didn't exist" case, it's also · 45434f4c
      Linus Torvalds authored 
      potentially a quite valid value, so not restoring it would be wrong.

What *would* be interesting is to hear where the bad values came from in
the first place.  It sounds like the device state is saved after the PCI
bus controller in front of the device has been crapped on, resulting in the
PCI config cycles never reaching the device at all.

Something along this patch (together with suspend/resume debugging output)
migth help pinpoint it.  But it really sounds like something totally
brokenly turned off the PCI bridge (some ACPI shutdown crud?  I wouldn't be
entirely surprised)

Cc: Greg KH <greg@kroah.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      45434f4c
  11. 04 Sep, 2009 1 commit
    • Olaf Hering's avatar
      On Sun, Feb 11, Paul Rolland wrote: · 5109d2e9
      Olaf Hering authored 
      > I'm facing something quite strange... When booting one of these kernels
> (it's a new machine, I've not been running older kernels), the boot message
> says :
>
> ACPI: PCI Interrupt 0000:04:00.0[A] -> GSI 19 (level, low) -> IRQ 19
> sky2 v1.10 addr 0xff8fc000 irq 19 Yukon-EC (0xb6) rev 2
> sky2 eth0: addr 00:18:f3:e0:5d:d4
> ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 16 (level, low) -> IRQ 16
> sky2 v1.10 addr 0xff7fc000 irq 16 Yukon-EC (0xb6) rev 2
> sky2 eth1: addr 00:18:f3:e0:36:fd
>
> So, I'm expecting two interfaces : eth0 and eth1
>
> Unfortunately, at the end of the boot process, I can find eth1 and eth2,

Unfortunately, this patch was not applied to mainline last year.
Maybe this year.

Keep track about which network interface names were renamed after the
network device driver printed its banner.
Signed-off-by: default avatarOlaf Hering <olaf@aepfle.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      5109d2e9
  13. 24 Aug, 2009 1 commit
    • Mel Gorman's avatar
      A number of bug reports have been submitted related to memory initialisation · 52bd57e3
      Mel Gorman authored 
      that would have been easier to debug if the PFN of page addresses were
available.  The dmesg output is often insufficient to find that information so
debugging patches need to be sent to the reporting user.

This patch prints out information on the memmap when it is being allocated and
the sizeof(struct page) when loglevel is set high enough.  In most
architectures, this output is produced in generic code.  x86_64 and ia64 both
setup node_mem_map in an architecture-specific manner requiring arch-specfic
changes.  Th memmap information can be used to translate any valid page
address into a PFN.  page_to_pfn() cannot be used directly in bad_page()
because there is no guarantee that the address pointer is valid in any way and
the translation can produce garbage.

Information on memmap is not printed out for the SPARSEMEM memory model.  This
only applies to FLATMEM and DISCONTIG configurations.
Signed-off-by: default avatarMel Gorman <mel@csn.ul.ie>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      52bd57e3
  15. 20 Apr, 2009 1 commit
  17. 13 Jul, 2009 1 commit
    • Andrew Morton's avatar
      - Add some help text · 5658ecb4
      Andrew Morton authored 
      - Force the feature on for now, for testing.

Cc: Al Viro <viro@ftp.linux.org.uk>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: Alexander Nyberg <alexn@telia.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <cl@linux-foundation.org>.com>
Cc: Ravikiran Thirumalai <kiran@scalex86.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      5658ecb4
  19. 24 Aug, 2009 1 commit
    • David Howells's avatar
      The attached patch adds a module for testing and benchmarking mutexes, · cc2f37c2
      David Howells authored 
      semaphores and R/W semaphores.

Using it is simple:

	insmod synchro-test.ko <args>

It will exit with error ENOANO after running the tests and printing the
results to the kernel console log.

The available arguments are:

 (*) mx=N

	Start up to N mutex thrashing threads, where N is at most 20. All will
	try and thrash the same mutex.

 (*) sm=N

	Start up to N counting semaphore thrashing threads, where N is at most
	20. All will try and thrash the same semaphore.

 (*) ism=M

	Initialise the counting semaphore with M, where M is any positive
	integer greater than zero. The default is 4.

 (*) rd=N
 (*) wr=O
 (*) dg=P

	Start up to N reader thrashing threads, O writer thrashing threads and
	P downgrader thrashing threads, where N, O and P are at most 20
	apiece. All will try and thrash the same read/write semaphore.

 (*) elapse=N

	Run the tests for N seconds. The default is 5.

 (*) load=N

	Each thread delays for N uS whilst holding the lock. The dfault is 0.

 (*) interval=N

	Each thread delays for N uS whilst not holding the lock. The default
	is 0.

 (*) do_sched=1

	Each thread will call schedule if required after each iteration.

 (*) v=1

	Print more verbose information, including a thread iteration
	distribution list.

The module should be enabled by turning on CONFIG_DEBUG_SYNCHRO_TEST to "m".
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarAdrian Bunk <bunk@stusta.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      cc2f37c2
  21. 13 Jul, 2009 1 commit
  23. 24 Aug, 2009 3 commits
  25. 10 Sep, 2009 1 commit
  27. 05 Sep, 2009 1 commit
  29. 30 Jun, 2009 1 commit
  31. 24 Aug, 2009 1 commit
  33. 18 Feb, 2009 1 commit
  35. 17 Feb, 2009 1 commit
  37. 31 Dec, 2008 1 commit
  39. 09 Feb, 2009 1 commit
  41. 27 Nov, 2008 2 commits
  43. 31 Dec, 2008 2 commits
  45. 13 Jul, 2009 1 commit
    • Vladimir Saveliev's avatar
      This is the main reiserfs4 filesystem. · 76950d31
      Vladimir Saveliev authored 
      Q&A wrt this patch:

- A really short guide to how to get up and running with this filesystem.

        Reiser4 is a file system based on dancing tree algorithms, and
        is described at http://www.namesys.com.  One should be able to get it
        up and running just like any of the other filesystems supported by
        Linux.  Configure it to be compiled either builtin or as a module. 
        Create reiser4 filesystem with mkfs.reiser4, mount and use it.  More
        detailed info can be found at
        http://thebsh.namesys.com/snapshots/LATEST/READ.ME.

- The direct URL which people use to obtain the mkfs tool for this
  filesystem.  Also fsck and anything else.

        Reiser4 userland tools can be obtained at
        ftp://ftp.namesys.com/pub/reiser4progs. 
        ftp://ftp.namesys.com/pub/reiser4progs/README contains detailed
        instructions on how to compile and install these tools.  Also all
        reiser4 progs have man pages.  

- Any known shortcomings, caveats, etc.

        Reiser4 has been tested on i386 yet only.  Quota support is
        not ready yet.  Should be ready soon.  Reiser4 was tested extensively,
        and we got to where the mailing list was not able to hit any bugs, but
        then we told people that, got an order of magnitude increase in users,
        and they are able to hit bugs that we are working on now.

        Reiser's Law of Software Engineering: Each order of magnitude
        increase in users finds more bugs, in a quantity equal to the previous
        order of magnitude increase in users.  Success for software developers
        is measured by how long the frustration lasts.

        Only the very core functionality is working.  Exotic plugins,
        an API for multiple operation transactions and accessing multiple
        small files in one syscall, compression, inheritance, all have been
        postponed until after the core functionality is shipped.  The
        compression plugin needs a code review before anyone should use it.

- A statement on compatibility with reiserfs3 filesytems.

        To upgrade from reiserfs V3 to V4, use tar, or sponsor us to
        write a convertfs.

- Bear in mind that people will immediately benchmark this filesytem, and
  first impressions count.  Now is your chance to communicate any tuning
  guidelines, mount options or whatever which you'd like people to understand
  BEFORE they start publishing benchmark info.

        Reiser4 is not tuned for fsync/sync/O_SYNC performance yet.  

        If you see results that are much different from those at
        www.namesys.com/benchmarks.html, let us know.  If you see performance
        characteristics that don't quite make sense, email
        reiserfs-list@namesys.com, such things are always of interest.

        reiser4 is not tuned for mmaping and dirtying more than
        physical ram like IOzone does.  This is quite different in its code
        path from writing and dirtying more than physical ram.  There are
        those who think that what IOZone does is rarely done by real programs,
        and therefor we should not bother to optimize what it does.  All I
        know is, this month we are not optimized for it.

        Please consider its space savings when you benchmark it also.

[michal.k.k.piotrowski@gmail.com: kill #include "linux/config.h"]
[akpm@linux-foundation.org: reiser4_drop_page: don't call remove_from_page_cache]
[bunk@stusta.de: fs/reiser4/: possible cleanups]
Signed-off-by: default avatarVladimir Saveliev <vs@namesys.com>
Signed-off-by: default avatarHans Reiser <reiser@namesys.com>
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
reiser4: fix for drop-unused-semaphores.patch
EDESC
Wait for tail conversion completion when acquiring exclusive access by
. mmap_unix_file()
. setattr_unix_file()
. release_unix_file()
Update comments.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Cc Jonathan Briggs <jbriggs@esoft.com>
DESC
reiser4-slab-allocators-remove-slab_debug_initial-flag
EDESC
Cc: Christoph Lameter <cl@linux-foundation.org>.com>
DESC
reiser4: use simple_prepare_write to zero page data
EDESC
It's common for file systems to need to zero data on either side of a
write, if a page is not Uptodate during prepare_write.  It just so happens
that simple_prepare_write() in libfs.c does exactly that, so we can avoid
duplication and just call that function to zero page data.
Signed-off-by: default avatarNate Diller <nate.diller@gmail.com>
Cc: Vladimir Saveliev <vs@namesys.com>
Cc: Edward Shishkin <edward@namesys.com>
DESC
reiser4-fix
EDESC

DESC
reiser4: use zero_user_page
EDESC
Use zero_user_page() instead of open-coding it.
Signed-off-by: default avatarNate Diller <nate.diller@gmail.com>
Cc: Vladimir Saveliev <vs@namesys.com>
Cc: Edward Shishkin <edward@namesys.com>
DESC
reiser4: remove typedefs
EDESC
. Reduce number of typedefs from 289 to 248
. Remove unused file plugin/file/invert.c
. Update comments

DESC
reiser4: fix write_extent
EDESC
Prepared-by Ignatich <ignatich@gmail.com>

Fix reiser4_write_extent():
   1) handling incomplete writes missed in reiser4-temp-fix.patch
   2) bugs in the case of returned errors
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
reiser4 make sync_inodes non-void
EDESC
Make reiser4_sync_inodes non-void
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
Reiser4: Drop 'size' argument from bio_endio and bi_end_io
EDESC
Reiser4: Drop 'size' argument from bio_endio and bi_end_io

This patch pushes into Reiser4 the changes introduced by
commit 6712ecf8:

	As bi_end_io is only called once when the request is complete,
	the 'size' argument is now redundant.  Remove it.

	Now there is no need for bio_endio to subtract the size completed
	from bi_size.  So don't do that either.

	While we are at it, change bi_end_io to return void.
Signed-off-by: default avatarLaurent Riffard <laurent.riffard@free.fr>
Acked-by: default avatarJens Axboe <jens.axboe@oracle.com>
Acked-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
mm: clean up and kernelify shrinker registration
EDESC
I can never remember what the function to register to receive VM pressure
is called.  I have to trace down from __alloc_pages() to find it.

It's called "set_shrinker()", and it needs Your Help.

1) Don't hide struct shrinker.  It contains no magic.
2) Don't allocate "struct shrinker".  It's not helpful.
3) Call them "register_shrinker" and "unregister_shrinker".
4) Call the function "shrink" not "shrinker".
5) Reduce the 17 lines of waffly comments to 13, but document it properly.

The comment in reiser4 makes me a little queasy.
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
Cc: Vladimir Saveliev <vs@namesys.com>
Acked-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
reiser4: fix NULL dereference in __mnt_is_readonly in ftruncate()
EDESC
Signed-off-by: default avatarDave Hansen <haveblue@us.ibm.com>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
reiser4: fix extent2tail
EDESC
Fixed bug in extent2tail conversion.

Bug description:
when converting partially converted file
(with flag REISER4_PART_MIXED installed)
reiser4_cut_tree() starts to cut old metatada
from wrong offset. Result is data corruption.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
reiser4: fix read_tail
EDESC
Update hint when reading tails
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
reiser4: fix unix-file readpages filler
EDESC
Protect page (via incrementing page count) from being reclaimed when looking
for extent pointer in unix-file specific readpages filler.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
DESC
reiser4: fix readpage_unix_file
EDESC
. If nominated (by VFS) page is out of file size, then fill it
  by zeros instead of returning -EINVAL (this prevents returning
  an unexpected error (-EINVAL) by some apps that don't check
  file size).

. Check if the page became uptodate while it was being unlocked.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Cc: Zan Lynx <zlynx@acm.org>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
reiser4: fix for new aops patches
EDESC
Cc: Vladimir Saveliev <vs@namesys.com>
Cc: Edward Shishkin <edward@namesys.com>
DESC
reiser4: do not allocate struct file on stack
EDESC
Do not allocate struct file on stack, pass the persistent one instead.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Tested-by: default avatarZan Lynx <zlynx@acm.org>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
git-block-vs-reiser4
EDESC
Hope this is right.

Hope you know what you're doing ;)

Cc: Vladimir Saveliev <vs@namesys.com>
Cc: Edward Shishkin <edward@namesys.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
DESC
reiser4: cryptcompress misc fixups
EDESC
.  Fix a race (reproducible by fsx + sync (1)) between
  checkin_page_cluster operations: serialize them via special per-inode
  checkin_mutex (usual i_mutex is not suitable for this purpose, as
  ->writepages() also calls checkin_page_cluster();

.  Add comments for checkin/checkout technique for synchronization of
  primary and secondary caches with proof of correctness;

.  Fix missed right neighbor when updating disk clusters by
  handle_pos_on_leaf() during squalloc (should use upper levels to get
  expected non-connected neighbor);

.  Resolve a race between read and truncate (when read finds partially
  truncated and, hence, unrecoverable disk cluster) via keeping a track of
  leftmost truncated disk clusters in cryptcompress-specific part of inode;

. Introduce size translators and size modulators for
  common needs;

. Update comments;

. Rename badly sounding function names;

. Fix coding style;

. Add my part of credits.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
reiser4: cryptcompress misc fixups-2
EDESC
Check a file plugin id before manipulating with plugin-specific counter.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
fs/reiser4/plugin/: make 3 functions static
EDESC
This patch makes the following needlessly global functions static:
- file/cryptcompress.c: __put_page_cluster()
- file/cryptcompress.c: put_hint_cluster()
- item/ctail.c: ctail_read_disk_cluster()
Signed-off-by: default avatarAdrian Bunk <bunk@kernel.org>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
reiser4: change error code base
EDESC
Change REISER4_ERROR_CODE_BASE to 10000 to not overlap real errnos
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
reiser4: use lzo library functions
EDESC
. Convert Reiser4 to use lzo implementation in lib/lzo/ instead of
  including its own copy of minilzo;
. Do not set zeros to workmem region.
Signed-off-by: default avatarEdward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
fs/reiser4/plugin/file/cryptcompress.c: kmalloc + memset conversion to kzalloc
EDESC
 fs/reiser4/plugin/file/cryptcompress.c | 101386 -> 101352 (-34 bytes)
 fs/reiser4/plugin/file/cryptcompress.o | 456784 -> 456644 (-140 bytes)
Signed-off-by: default avatarMariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
reiser4: kmalloc + memset conversion to kzalloc
EDESC
Signed-off-by: default avatarMariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
fs/reiser4/init_super.c: kmalloc + memset conversion to kzalloc
EDESC
 fs/reiser4/init_super.c | 19283 -> 19246 (-37 bytes)
 fs/reiser4/init_super.o | 155348 -> 155152 (-196 bytes)
Signed-off-by: default avatarMariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
fs/reiser4/plugin/inode_ops_rename.c: kmalloc + memset conversion to kzalloc
EDESC
 fs/reiser4/plugin/inode_ops_rename.c | 28474 -> 28344 (-130 bytes)
 fs/reiser4/plugin/inode_ops_rename.o | 142600 -> 142476 (-124 bytes)
Signed-off-by: default avatarMariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
fs/reiser4/ktxnmgrd.c: kmalloc + memset conversion to kzalloc
EDESC
 fs/reiser4/ktxnmgrd.c | 5314 -> 5277 (-37 bytes)
 fs/reiser4/ktxnmgrd.o | 131624 -> 131496 (-128 bytes)
Signed-off-by: default avatarMariusz Kozlowski <m.kozlowski@tuxland.pl>
Cc: Edward Shishkin <edward@namesys.com>
Cc: "Vladimir V. Saveliev" <vs@namesys.com>
DESC
Use helpers to obtain task pid in printks
EDESC
The task_struct->pid member is going to be deprecated, so start
using the helpers (task_pid_nr/task_pid_vnr/task_pid_nr_ns) in
the kernel.

The first thing to start with is the pid, printed to dmesg - in
this case we may safely use task_pid_nr(). Besides, printks produce
more (much more) than a half of all the explicit pid usage.
Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
DESC
Subject: [PATCH 1/2] remove asm/bitops.h includes
EDESC
remove asm/bitops.h includes

including asm/bitops directly may cause compile errors. don't include it
and include linux/bitops instead. next patch will deny including asm header
directly.

Cc: Adrian Bunk <bunk@kernel.org>
Signed-off-by: default avatarJiri Slaby <jirislaby@gmail.com>
      76950d31
  47. 24 Aug, 2009 3 commits
  49. 08 Sep, 2009 1 commit
    • Artem Bityutskiy's avatar
      This patch adds new operation to struct super_operations - sync_inodes, · b5fca757
      Artem Bityutskiy authored 
      generic implementaion and changes fs-writeback.c:sync_sb_inodes() to call
filesystem's sync_inodes if it is defined or generic implementaion otherwise.
This new operation allows filesystem to decide itself what to flush.

Reiser4 flushes dirty pages on basic of atoms, not of inodes.  sync_sb_inodes
used to call address space flushing method (writepages) for every dirty inode.
 For reiser4 it caused having to commit atoms unnecessarily often.  This
turned into substantial slowdown.  Having this method helped to fix that
problem.

akpm: this patch needs to be chnaged to remove the `sb' arg.
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: Edward Shishkin <edward.shishkin@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      b5fca757
  51. 24 Aug, 2009 1 commit
    • Edward Shishkin's avatar
      In accordance with reiser4 transactional model every dirty page should be · 5c025457
      Edward Shishkin authored 
      "captured" by some atom.  However, outside reiser4 context dirty page can
not be captured in some cases, as it is accompanied with specific work
(jnode creation, etc).  Reiser4 recognizes such "anonymous" pages (i.e. 
pages that were dirtied outside of reiser4) by the tag
PAGECACHE_TAG_DIRTY.  Pages dirtied inside reiser4 context are not tagged
at all: we don't need this.  Indeed, once page is dirtied and captured, it
is attached to a jnode (a special header to keep a track of transactions).

reiser4_set_page_dirty_internal() was the internal reiser4 function that
set dirty bit without tagging the page.  Having such internal function led
to real problems (incorrect task io accounting, etc.  because of not
updating this internal "friend").

Solution:

The following patch adds a core library function that sets a dirty bit
without tagging the page.

Signed-off-by: Edward Shishkin<edward.shishkin@gmail.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      5c025457
  53. 04 Jun, 2009 1 commit
  55. 24 Aug, 2009 1 commit
  57. 04 Jun, 2009 1 commit
  59. 24 Aug, 2009 1 commit
  61. 04 Aug, 2009 1 commit