GitHub/LineageOS/android_kernel_samsung_universal7580.git
16 years agoMMC: OMAP: Start new commands from work queue instead of irq
Jarkko Lavinen [Wed, 26 Mar 2008 20:09:58 +0000 (16:09 -0400)]
MMC: OMAP: Start new commands from work queue instead of irq

Use work queues for starting new commands instead of starting them
directly from irq handler. The command scheduling needs to be delayed
a bit for some cards which should not be done from an interrupt.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Lazy clock shutdown
Jarkko Lavinen [Wed, 26 Mar 2008 20:09:52 +0000 (16:09 -0400)]
MMC: OMAP: Lazy clock shutdown

MMCA spec says the mmc clock should be kept running for at least
8 cycles after the last RW request. Ensure this with lazy clock
disable after a request, or with an explicit delay before
switching a slot.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Move failing command abortion to workqueue
Jarkko Lavinen [Wed, 26 Mar 2008 20:09:48 +0000 (16:09 -0400)]
MMC: OMAP: Move failing command abortion to workqueue

Abort failed command from workqueue rather than from an interrupt,
allowing longer delays in abortion.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Use tasklet instead of workqueue for cover switch notification
Jarkko Lavinen [Wed, 26 Mar 2008 20:09:42 +0000 (16:09 -0400)]
MMC: OMAP: Use tasklet instead of workqueue for cover switch notification

The cover waitqueue is occasionally scheduled twice from timer
and the interrupt and oops follows. It would have been possible
to fix this problem with spinlocks but using tasklet was a dropin
solution with no need for locking.

This path also adds some cleanups.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Check the get_cover_state function pointer if not set
Kyungmin Park [Wed, 26 Mar 2008 20:09:38 +0000 (16:09 -0400)]
MMC: OMAP: Check the get_cover_state function pointer if not set

If the get_cover_state is not set, it occurs the oops.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Using setup_timer instead of init_timer
Carlos Eduardo Aguiar [Wed, 26 Mar 2008 20:09:34 +0000 (16:09 -0400)]
MMC: OMAP: Using setup_timer instead of init_timer

Using setup_timer() instead of init_timer() on omap.c file.

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Abort stuck commands
Jarkko Lavinen [Wed, 26 Mar 2008 20:09:29 +0000 (16:09 -0400)]
MMC: OMAP: Abort stuck commands

When a card is removed while it is being accessed, a command can get stuck so
that no timeout or end of command interrupt ever occurs. The command getting
stuck is almost always CDM12, but also the other commands can get stuck. Catch
a stuck command with a timer and try sending the initialization stream until
the controller starts running again and responds with the end of command
status.

Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: General cleanup for MMC multislot support
Juha Yrjola [Wed, 26 Mar 2008 20:09:26 +0000 (16:09 -0400)]
MMC: OMAP: General cleanup for MMC multislot support

General code cleanup, modifications at some dev_* functions and
other hacks at mmc_omap_irq() for MMC multislot support.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Power functions modified to MMC multislot support
Juha Yrjola [Wed, 26 Mar 2008 20:09:22 +0000 (16:09 -0400)]
MMC: OMAP: Power functions modified to MMC multislot support

Modifications at power functions to MMC multislot support. This patch
also move board-specific code out of MMC OMAP driver.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Fix timeout calculation for MMC multislot support
Juha Yrjola [Wed, 26 Mar 2008 20:09:16 +0000 (16:09 -0400)]
MMC: OMAP: Fix timeout calculation for MMC multislot support

Fix the data timeout calculation for MMC multislot support.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: New release dma and abort xfer functions
Juha Yrjola [Wed, 26 Mar 2008 20:09:12 +0000 (16:09 -0400)]
MMC: OMAP: New release dma and abort xfer functions

New functions to support MMC multislot:
mmc_omap_release_dma() and mmc_omap_abort_xfer().

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Add back cover switch support
Juha Yrjola [Wed, 26 Mar 2008 20:09:08 +0000 (16:09 -0400)]
MMC: OMAP: Add back cover switch support

This patch adds back MMC cover switch support in a way that
supports multiple slots.

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Introduce new multislot structure and change driver to use it
Juha Yrjola [Wed, 26 Mar 2008 20:08:57 +0000 (16:08 -0400)]
MMC: OMAP: Introduce new multislot structure and change driver to use it

Introduce new MMC multislot structure and change driver to use it.

Note that MMC clocking is now enabled in mmc_omap_select_slot()
and disabled in mmc_omap_release_slot().

Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>
Signed-off-by: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Remove cover switch handling to allow adding multislot support
Tony Lindgren [Wed, 26 Mar 2008 20:08:53 +0000 (16:08 -0400)]
MMC: OMAP: Remove cover switch handling to allow adding multislot support

This patch removes the MMC cover switch handling temporarily
to make following multislot patches cleaner.

MMC cover switch handling will be added back in later patches
after adding basic multislot support.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Fix the BYTEBLOCK capability removal
Francisco Alecrim [Wed, 26 Mar 2008 20:08:48 +0000 (16:08 -0400)]
MMC: OMAP: Fix the BYTEBLOCK capability removal

According with commit 255d01af9a990fd5166f04ed0cc0b30b7b67e81e
from Linux-OMAP tree, the BYTEBLOCK capability was removed by Pierre Ossman.
MMC_CAP_BYTEBLOCK is not defined causing the compile error:

drivers/mmc/host/omap.c: In function `mmc_omap_probe':
drivers/mmc/host/omap.c:1077: error: `MMC_CAP_BYTEBLOCK' undeclared (first use in this function)
drivers/mmc/host/omap.c:1077: error: (Each undeclared identifier is reported only once
drivers/mmc/host/omap.c:1077: error: for each function it appears in.)

Signed-off-by: Francisco Alecrim <francisco.alecrim@indt.org.br>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Remove extra divisor increase
Tony Lindgren [Wed, 26 Mar 2008 20:08:45 +0000 (16:08 -0400)]
MMC: OMAP: Remove extra divisor increase

As noted by Kyungmin Park, the divisor calculation has
an unnecessary increase.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMMC: OMAP: Remove some opcodes from host driver
Carlos Eduardo Aguiar [Wed, 26 Mar 2008 20:08:41 +0000 (16:08 -0400)]
MMC: OMAP: Remove some opcodes from host driver

This patch removes some opcodes from host driver so there's no need on putting
'#include <linux/mmc/mmc.h>', that should not be needed in host drivers.

Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar@indt.org.br>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agommc: use shorter, equivalent set_current_state()
Robert P. J. Day [Fri, 28 Mar 2008 21:34:47 +0000 (14:34 -0700)]
mmc: use shorter, equivalent set_current_state()

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agosdhci: allow led to be controlled freely
Pierre Ossman [Mon, 17 Mar 2008 09:29:38 +0000 (10:29 +0100)]
sdhci: allow led to be controlled freely

Hook up the controller LED to the LED subsystem, allowing more flexible
control than simply indicating an ongoing request.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agosdhci: remove custom controller name
Pierre Ossman [Sat, 8 Mar 2008 22:44:25 +0000 (23:44 +0100)]
sdhci: remove custom controller name

Remove the use of the sdhci specific device name and use the mmc controller
name instead.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agommc: set controller name early
Pierre Ossman [Sat, 8 Mar 2008 22:43:19 +0000 (23:43 +0100)]
mmc: set controller name early

Reorganise code so that mmc_hostname() works directly after allocation.
That way host drivers can use that name for resource allocations and
messages during probing.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
16 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfashe...
Linus Torvalds [Fri, 18 Apr 2008 17:15:22 +0000 (10:15 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/mfasheh/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (64 commits)
  ocfs2/net: Add debug interface to o2net
  ocfs2: Only build ocfs2/dlm with the o2cb stack module
  ocfs2/cluster: Get rid of arguments to the timeout routines
  ocfs2: Put tree in MAINTAINERS
  ocfs2: Use BUG_ON
  ocfs2: Convert ocfs2 over to unlocked_ioctl
  ocfs2: Improve rename locking
  fs/ocfs2/aops.c: test for IS_ERR rather than 0
  ocfs2: Add inode stealing for ocfs2_reserve_new_inode
  ocfs2: Add ac_alloc_slot in ocfs2_alloc_context
  ocfs2: Add a new parameter for ocfs2_reserve_suballoc_bits
  ocfs2: Enable cross extent block merge.
  ocfs2: Add support for cross extent block
  ocfs2: Move /sys/o2cb to /sys/fs/o2cb
  sysfs: Allow removal of symlinks in the sysfs root
  ocfs2:  Reconnect after idle time out.
  ocfs2/dlm: Cleanup lockres print
  ocfs2/dlm: Fix lockname in lockres print function
  ocfs2/dlm: Move dlm_print_one_mle() from dlmmaster.c to dlmdebug.c
  ocfs2/dlm: Dumps the purgelist into a debugfs file
  ...

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw
Linus Torvalds [Fri, 18 Apr 2008 17:02:46 +0000 (10:02 -0700)]
Merge git://git./linux/kernel/git/steve/gfs2-2.6-nmw

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (49 commits)
  [GFS2] fix assertion in log_refund()
  [GFS2] fix GFP_KERNEL misuses
  [GFS2] test for IS_ERR rather than 0
  [GFS2] Invalidate cache at correct point
  [GFS2] fs/gfs2/recovery.c: suppress warnings
  [GFS2] Faster gfs2_bitfit algorithm
  [GFS2] Streamline quota lock/check for no-quota case
  [GFS2] Remove drop of module ref where not needed
  [GFS2] gfs2_adjust_quota has broken unstuffing code
  [GFS2] possible null pointer dereference fixup
  [GFS2] Need to ensure that sector_t is 64bits for GFS2
  [GFS2] re-support special inode
  [GFS2] remove gfs2_dev_iops
  [GFS2] fix file_system_type leak on gfs2meta mount
  [GFS2] Allow bmap to allocate extents
  [GFS2] Fix a page lock / glock deadlock
  [GFS2] proper extern for gfs2/locking/dlm/mount.c:gdlm_ops
  [GFS2] gfs2/ops_file.c should #include "ops_inode.h"
  [GFS2] be*_add_cpu conversion
  [GFS2] Fix bug where we called drop_bh incorrectly
  ...

16 years agox86: kgdb build fix
Harvey Harrison [Fri, 18 Apr 2008 16:54:38 +0000 (09:54 -0700)]
x86: kgdb build fix

TF_MASK is no longer defined, use X86_EFLAGS_TF.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Fri, 18 Apr 2008 16:44:55 +0000 (09:44 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: (27 commits)
  [IA64] kdump: Add crash_save_vmcoreinfo for INIT
  [IA64] Fix NUMA configuration issue
  [IA64] Itanium Spec updates
  [IA64] Untangle sync_icache_dcache() page size determination
  [IA64] arch/ia64/kernel/: use time_* macros
  [IA64] remove redundant display of free swap space in show_mem()
  [IA64] make IOMMU respect the segment boundary limits
  [IA64] kprobes: kprobe-booster for ia64
  [IA64] fix getpid and set_tid_address fast system calls for pid namespaces
  [IA64] Replace explicit jiffies tests with time_* macros.
  [IA64] use goto to jump out do/while_each_thread
  [IA64] Fix unlock ordering in smp_callin
  [IA64] pgd_offset() constfication.
  [IA64] kdump: crash.c coding style fix
  [IA64] kdump: add kdump_on_fatal_mca
  [IA64] Minimize per_cpu reservations.
  [IA64] Correct pernodesize calculation.
  [IA64] Kernel parameter for max number of concurrent global TLB purges
  [IA64] Multiple outstanding ptc.g instruction support
  [IA64] Implement smp_call_function_mask for ia64
  ...

16 years agoocfs2/net: Add debug interface to o2net
Sunil Mushran [Mon, 14 Apr 2008 17:46:19 +0000 (10:46 -0700)]
ocfs2/net: Add debug interface to o2net

This patch exposes o2net information via debugfs. The information includes
the list of sockets (sock_containers) as well as the list of outstanding
messages (send_tracking). Useful for o2dlm debugging.

(This patch is derived from an earlier one written by Zach Brown that
exposed the same information via /proc.)

[Mark: checkpatch fixes]

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Reviewed-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Only build ocfs2/dlm with the o2cb stack module
Mark Fasheh [Fri, 4 Apr 2008 19:45:55 +0000 (12:45 -0700)]
ocfs2: Only build ocfs2/dlm with the o2cb stack module

fs/ocfs2/dlm/ocfs2_dlm.ko and fs/ocfs2/dlm/ocfs2_dlmfs.ko get built if
CONFIG_FS_OCFS2 is specified. This isn't quite how it should happen any more
- the "o2cb" dlm modules should only be built if CONFIG_FS_OCFS2_O2CB is
set, so update the dlm Makefile accordingly.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Joel Becker <joel.becker@oracle.com>
16 years agoocfs2/cluster: Get rid of arguments to the timeout routines
Jeff Mahoney [Fri, 28 Mar 2008 23:44:13 +0000 (16:44 -0700)]
ocfs2/cluster: Get rid of arguments to the timeout routines

We keep seeing bug reports related to NULL pointer derefs in
o2net_set_nn_state(). When I originally wrote up the configurable timeout
patch, I had tried to plan for multiple clusters. This was silly.

The timeout routines all use o2nm_single_cluster so there's no point in
passing an argument at all. This patch removes the arguments and kills those
bugs dead.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Put tree in MAINTAINERS
Joel Becker [Sun, 23 Mar 2008 05:08:07 +0000 (22:08 -0700)]
ocfs2: Put tree in MAINTAINERS

The ocfs2 MAINTAINERS entry should have the git tree URL.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Use BUG_ON
Julia Lawall [Tue, 4 Mar 2008 23:21:05 +0000 (15:21 -0800)]
ocfs2: Use BUG_ON

if (...) BUG(); should be replaced with BUG_ON(...) when the test has no
side-effects to allow a definition of BUG_ON that drops the code completely.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@ disable unlikely @ expression E,f; @@

(
  if (<... f(...) ...>) { BUG(); }
|
- if (unlikely(E)) { BUG(); }
+ BUG_ON(E);
)

@@ expression E,f; @@

(
  if (<... f(...) ...>) { BUG(); }
|
- if (E) { BUG(); }
+ BUG_ON(E);
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Convert ocfs2 over to unlocked_ioctl
Andi Kleen [Sun, 27 Jan 2008 02:17:17 +0000 (03:17 +0100)]
ocfs2: Convert ocfs2 over to unlocked_ioctl

As far as I can see there is nothing in ocfs2_ioctl that requires the BKL,
so use unlocked_ioctl

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Improve rename locking
Jan Kara [Thu, 21 Feb 2008 17:00:00 +0000 (18:00 +0100)]
ocfs2: Improve rename locking

ocfs2_rename() was being too aggressive with the rename lock - we only need
it for certain forms of directory rename.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agofs/ocfs2/aops.c: test for IS_ERR rather than 0
Julia Lawall [Fri, 28 Mar 2008 21:43:10 +0000 (14:43 -0700)]
fs/ocfs2/aops.c: test for IS_ERR rather than 0

The function ocfs2_start_trans always returns either a valid pointer or a
value made with ERR_PTR, so its result should be tested with IS_ERR, not
with a test for 0.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add inode stealing for ocfs2_reserve_new_inode
Tao Ma [Wed, 5 Mar 2008 08:11:46 +0000 (16:11 +0800)]
ocfs2: Add inode stealing for ocfs2_reserve_new_inode

Inode allocation is modified to look in other nodes allocators during
extreme out of space situations. We retry our own slot when space is freed
back to the global bitmap, or whenever we've allocated more than 1024 inodes
from another slot.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add ac_alloc_slot in ocfs2_alloc_context
Tao Ma [Mon, 3 Mar 2008 09:12:30 +0000 (17:12 +0800)]
ocfs2: Add ac_alloc_slot in ocfs2_alloc_context

In inode stealing, we no longer restrict the allocation to
happen in the local node. So it is neccessary for us to add
a new member in ocfs2_alloc_context to indicate which slot
we are using for allocation. We also modify the process of
local alloc so that this member can be used there also.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add a new parameter for ocfs2_reserve_suballoc_bits
Tao Ma [Mon, 3 Mar 2008 09:12:09 +0000 (17:12 +0800)]
ocfs2: Add a new parameter for ocfs2_reserve_suballoc_bits

In some cases(Inode stealing from other nodes), we may not want
ocfs2_reserve_suballoc_bits to allocate new groups from the
global_bitmap since it may already be full. So add a new parameter
for this.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Enable cross extent block merge.
Tao Ma [Wed, 30 Jan 2008 06:21:32 +0000 (14:21 +0800)]
ocfs2: Enable cross extent block merge.

In ocfs2_figure_merge_contig_type, we judge whether there exists
a cross extent block merge and enable it by setting CONTIG_LEFT
and CONTIG_RIGHT accordingly.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add support for cross extent block
Tao Ma [Wed, 30 Jan 2008 06:21:05 +0000 (14:21 +0800)]
ocfs2: Add support for cross extent block

In ocfs2_merge_rec_left, when we find the merge extent is "CONTIG_RIGHT"
with the first extent record of the next extent block, we will merge it to
the next extent block and change all the related extent blocks accordingly.

In ocfs2_merge_rec_right, when we find the merge extent is "CONTIG_LEFT"
with the last extent record of the previous extent block, we will merge
it to the prevoius extent block and change all the related extent blocks
accordingly.

As for CONTIG_LEFTRIGHT, we will handle CONTIG_RIGHT first so that when
the index is zero, the merge process will be more efficient and easier.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Move /sys/o2cb to /sys/fs/o2cb
Mark Fasheh [Wed, 30 Jan 2008 01:08:26 +0000 (17:08 -0800)]
ocfs2: Move /sys/o2cb to /sys/fs/o2cb

/sys/fs is where we really want file system specific sysfs objects.

Ocfs2-tools has been updated to look in /sys/fs/o2cb. We can maintain
backwards compatibility with old ocfs2-tools by using a sysfs symlink. After
some time (2 years), the symlink can be safely removed. This patch also adds
documentation to make it easier for people to figure out what /sys/fs/o2cb
is used for.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agosysfs: Allow removal of symlinks in the sysfs root
Mark Fasheh [Tue, 29 Jan 2008 22:35:18 +0000 (14:35 -0800)]
sysfs: Allow removal of symlinks in the sysfs root

Allow callers of sysfs_remove_link() to pass a NULL kobj, in which case
sysfs_root will be used as the parent directory. This allows us to tear down
top level symlinks created via sysfs_create_link(), which already has
similar handling of a NULL parent object.

Signed-off-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoocfs2: Reconnect after idle time out.
Tao Ma [Wed, 5 Mar 2008 07:50:12 +0000 (15:50 +0800)]
ocfs2:  Reconnect after idle time out.

Currently, o2net connects to a node on hb_up and disconnects on
hb_down and net timeout.

It disconnects on net timeout is ok, but it should attempt to
reconnect back. This is because sometimes nodes get overloaded
enough that the network connection breaks but the disk hb does not.
And if we get into that situation, we either fence (unnecessarily)
or wait for its disk hb to die (and sometimes hang in the process).

So in this updated scheme, when the network disconnects, we keep
attempting to reconnect till we succeed or we get a disk hb down
event.

If the other node is really dead, then we will eventually get a
node down event. If not, we should be able to connect again and
continue.

Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Cleanup lockres print
Sunil Mushran [Fri, 14 Mar 2008 18:18:24 +0000 (11:18 -0700)]
ocfs2/dlm: Cleanup lockres print

A previous patch added KERN_NOTICE to printks printing the lockres that
cluttered the output. This patch removes the log level. For people concerned
with syslog clutter, please note we now use this facility to print lockres
only during an error.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Fix lockname in lockres print function
Sunil Mushran [Mon, 10 Mar 2008 22:16:29 +0000 (15:16 -0700)]
ocfs2/dlm: Fix lockname in lockres print function

__dlm_print_one_lock_resource was printing lockname incorrectly.
Also, we now use printk directly instead of mlog as the latter prints
the line context which is not useful for this print.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Move dlm_print_one_mle() from dlmmaster.c to dlmdebug.c
Sunil Mushran [Mon, 10 Mar 2008 22:16:28 +0000 (15:16 -0700)]
ocfs2/dlm: Move dlm_print_one_mle() from dlmc to dlmdebug.c

This patch helps in consolidating debugging related functions in dlmdebug.c.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Dumps the purgelist into a debugfs file
Sunil Mushran [Mon, 10 Mar 2008 22:16:27 +0000 (15:16 -0700)]
ocfs2/dlm: Dumps the purgelist into a debugfs file

This patch dumps all the lockres' on the purgelist it can fit in one page
into a debugfs file. Useful for debugging.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Dumps the mles into a debugfs file
Sunil Mushran [Mon, 10 Mar 2008 22:16:26 +0000 (15:16 -0700)]
ocfs2/dlm: Dumps the mles into a debugfs file

This patch dumps all mles it can fit in one page into a debugfs file.
Useful for debugging.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Move struct dlm_master_list_entry to dlmcommon.h
Sunil Mushran [Mon, 10 Mar 2008 22:16:25 +0000 (15:16 -0700)]
ocfs2/dlm: Move struct dlm_master_list_entry to dlmcommon.h

This patch moves some mle related definitions from dlmmaster.c
to dlmcommon.h. Future patches need these definitions to dump mle
debugging information.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.beckeroracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Dumps the lockres' into a debugfs file
Sunil Mushran [Mon, 10 Mar 2008 22:16:24 +0000 (15:16 -0700)]
ocfs2/dlm: Dumps the lockres' into a debugfs file

This patch dumps all the lockres' alongwith all the locks into
a debugfs file. Useful for debugging.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Dump the dlm state in a debugfs file
Sunil Mushran [Mon, 10 Mar 2008 22:16:23 +0000 (15:16 -0700)]
ocfs2/dlm: Dump the dlm state in a debugfs file

This patch dumps the dlm state (dlm_ctxt) into a debugfs file.
Useful for debugging.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Create debugfs dirs
Sunil Mushran [Mon, 10 Mar 2008 22:16:22 +0000 (15:16 -0700)]
ocfs2/dlm: Create debugfs dirs

This patch creates the debugfs directories that will hold the
files to be used to dump the dlm state.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Link all lockres' to a tracking list
Sunil Mushran [Mon, 10 Mar 2008 22:16:21 +0000 (15:16 -0700)]
ocfs2/dlm: Link all lockres' to a tracking list

This patch links all the lockres' to a tracking list in dlm_ctxt.
We will use this in an upcoming patch that will walk the entire
list and to dump the lockres states to a debugfs file.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Create slabcaches for lock and lockres
Sunil Mushran [Mon, 10 Mar 2008 22:16:20 +0000 (15:16 -0700)]
ocfs2/dlm: Create slabcaches for lock and lockres

This patch makes the o2dlm allocate memory for lockres, lockname and lock
structures from slabcaches rather than kmalloc. This allows us to not only
make these allocs more efficient but also allows us to track the memory being
consumed by these structures.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2/dlm: Rename slabcache dlm_mle_cache to o2dlm_mle
Sunil Mushran [Mon, 10 Mar 2008 22:16:19 +0000 (15:16 -0700)]
ocfs2/dlm: Rename slabcache dlm_mle_cache to o2dlm_mle

This patch renames dlm_mle_slabcache to prevent namespace clashes with fs/dlm.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Document /sys/fs/ocfs2
Joel Becker [Mon, 31 Mar 2008 23:22:55 +0000 (16:22 -0700)]
ocfs2: Document /sys/fs/ocfs2

Add ABI documentation for these files:

/sys/fs/ocfs2/max_locking_protocol
/sys/fs/ocfs2/loaded_cluster_plugins
/sys/fs/ocfs2/active_cluster_plugin
/sys/fs/ocfs2/cluster_stack

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Allow selection of cluster plug-ins.
Joel Becker [Wed, 5 Mar 2008 01:58:56 +0000 (17:58 -0800)]
ocfs2: Allow selection of cluster plug-ins.

ocfs2 now supports plug-ins for the classic O2CB stack as well as
userspace cluster stacks in conjunction with fs/dlm.  This allows zero,
one, or both of the plug-ins to be selected in Kconfig.  For local mounts
(non-clustered), neither plug-in is needed.  Both plugins can be loaded
at one time, the runtime will select the one needed for the cluster
systme in use.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add kbuild for ocfs2_stack_user.ko
Joel Becker [Wed, 28 Nov 2007 22:53:30 +0000 (14:53 -0800)]
ocfs2: Add kbuild for ocfs2_stack_user.ko

Add ocfs2_stack_user.ko to the Makefile so that it builds.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Change mlog_bug_on to BUG_ON in ocfs2_lockid.h
Joel Becker [Wed, 5 Mar 2008 00:09:39 +0000 (16:09 -0800)]
ocfs2: Change mlog_bug_on to BUG_ON in ocfs2_lockid.h

The masklog code is in the o2cb stack, but ocfs2_lockid.h now needs to
be included by the user stack.  The BUG() in ocfs2_lock_type_string()
does not need masklog support, so change it to a regular BUG_ON().

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: add fsdlm to stackglue
David Teigland [Wed, 20 Feb 2008 22:29:27 +0000 (14:29 -0800)]
ocfs2: add fsdlm to stackglue

Add code to use fs/dlm.

[ Modified to be part of the stack_user module -- Joel ]

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add the 'set version' message to the ocfs2_control device.
Joel Becker [Wed, 20 Feb 2008 23:39:44 +0000 (15:39 -0800)]
ocfs2: Add the 'set version' message to the ocfs2_control device.

The "SETV" message sets the filesystem locking protocol version as
negotiated by the client.  The client negotiates based on the maximum
version advertised in /sys/fs/ocfs2/max_locking_protocol.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add the local node id to the handshake.
Joel Becker [Wed, 20 Feb 2008 22:44:34 +0000 (14:44 -0800)]
ocfs2: Add the local node id to the handshake.

This is the second part of the ocfs2_control handshake.  After
negotiating the ocfs2_control protocol, the daemon tells the filesystem
what the local node id is via the SETN message.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Introduce the DOWN message to ocfs2_control
Joel Becker [Tue, 19 Feb 2008 01:07:09 +0000 (17:07 -0800)]
ocfs2: Introduce the DOWN message to ocfs2_control

When the control daemon sees a node go down, it sends a DOWN message
through the ocfs2_control device.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Start the ocfs2_control handshake.
Joel Becker [Tue, 19 Feb 2008 03:40:12 +0000 (19:40 -0800)]
ocfs2: Start the ocfs2_control handshake.

When a control daemon opens the ocfs2_control device, it must perform a
handshake to tell the filesystem it is something capable of monitoring
cluster status.  Only after the handshake is complete will the filesystem
allow mounts.

This is the first part of the handshake.  The daemon reads all supported
ocfs2_control protocols, then writes in the protocol it will use.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add the ocfs2_control misc device.
Joel Becker [Tue, 19 Feb 2008 03:23:28 +0000 (19:23 -0800)]
ocfs2: Add the ocfs2_control misc device.

The ocfs2_control misc device is how a userspace control daemon (controld)
talks to the filesystem.  Introduce the bare-bones filesystem ops.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add the user stack module.
Joel Becker [Wed, 28 Nov 2007 22:38:40 +0000 (14:38 -0800)]
ocfs2: Add the user stack module.

Add a skeleton for the stack_user module.  It's just the barebones module
code.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add the 'cluster_stack' sysfs file.
Joel Becker [Fri, 1 Feb 2008 23:17:30 +0000 (15:17 -0800)]
ocfs2: Add the 'cluster_stack' sysfs file.

Userspace can now query and specify the cluster stack in use via the
/sys/fs/ocfs2/cluster_stack file.  By default, it is 'o2cb', which is
the classic stack.  Thus, old tools that do not know how to modify this
file will work just fine.  The stack cannot be modified if there is a
live filesystem.

ocfs2_cluster_connect() now takes the expected cluster stack as an
argument.  This way, the filesystem and the stack glue ensure they are
speaking to the same backend.

If the stack is 'o2cb', the o2cb stack plugin is used.  For any other
value, the fsdlm stack plugin is selected.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Add the USERSPACE_STACK incompat bit.
Joel Becker [Fri, 1 Feb 2008 23:08:23 +0000 (15:08 -0800)]
ocfs2: Add the USERSPACE_STACK incompat bit.

The filesystem gains the USERSPACE_STACK incomat bit and the
s_cluster_info field on the superblock.  When a userspace stack is in
use, the name of the stack is stored on-disk for mount-time
verification.

The "cluster_stack" option is added to mount(2) processing.  The mount
process needs to pass the matching stack name.  If the passed name and
the on-disk name do not match, the mount is failed.

When using the classic o2cb stack, the incompat bit is *not* set and no
mount option is used other than the usual heartbeat=local.  Thus, the
filesystem is compatible with older tools.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Create stack glue sysfs files.
Joel Becker [Fri, 1 Feb 2008 07:56:17 +0000 (23:56 -0800)]
ocfs2: Create stack glue sysfs files.

Introduce a set of sysfs files that describe the current stack glue
state.  The files live under /sys/fs/ocfs2.  The locking_protocol file
displays the version of ocfs2's locking code.  The
loaded_cluster_plugins file displays all of the currently loaded stack
plugins.  When filesystems are mounted, the active_cluster_plugin file
will display the plugin in use.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Break out stackglue into modules.
Joel Becker [Fri, 1 Feb 2008 23:03:57 +0000 (15:03 -0800)]
ocfs2: Break out stackglue into modules.

We define the ocfs2_stack_plugin structure to represent a stack driver.
The o2cb stack code is split into stack_o2cb.c.  This becomes the
ocfs2_stack_o2cb.ko module.

The stackglue generic functions are similarly split into the
ocfs2_stackglue.ko module.  This module now provides an interface to
register drivers.  The ocfs2_stack_o2cb driver registers itself.  As
part of this interface, ocfs2_stackglue can load drivers on demand.
This is accomplished in ocfs2_cluster_connect().

ocfs2_cluster_disconnect() is now notified when a _hangup() is pending.
If a hangup is pending, it will not release the driver module and will
let _hangup() do that.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
16 years agoocfs2: Create ocfs2_stack_operations and split out the o2cb stack.
Joel Becker [Fri, 1 Feb 2008 23:02:36 +0000 (15:02 -0800)]
ocfs2: Create ocfs2_stack_operations and split out the o2cb stack.

Define the ocfs2_stack_operations structure.  Build o2cb_stack_ops from
all of the o2cb-specific stack functions.  Change the generic stack glue
functions to call the stack_ops instead of the o2cb functions directly.

The o2cb functions are moved to stack_o2cb.c.  The headers are cleaned up
to where only needed headers are included.

In this code, stackglue.c and stack_o2cb.c refer to some shared
extern variables.  When they become modules, that will change.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Split o2cb code from generic stack functions.
Joel Becker [Fri, 1 Feb 2008 22:51:03 +0000 (14:51 -0800)]
ocfs2: Split o2cb code from generic stack functions.

Split off the o2cb-specific funtionality from the generic stack glue
calls.  This is a precurser to wrapping the o2cb functionality in an
operations vector.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Clean up stackglue initialization
Joel Becker [Thu, 31 Jan 2008 00:58:36 +0000 (16:58 -0800)]
ocfs2: Clean up stackglue initialization

The stack glue initialization function needs a better name so that it can be
used cleanly when stackglue becomes a module.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Abstract out a debugging function for underlying dlms.
Joel Becker [Wed, 30 Jan 2008 00:59:55 +0000 (16:59 -0800)]
ocfs2: Abstract out a debugging function for underlying dlms.

dlmglue.c was still referencing a raw o2dlm lksb in one instance.  Let's
create a generic ocfs2_dlm_dump_lksb() function.  This allows underlying
DLMs to print whatever they want about their lock.

We then move the o2dlm dump into stackglue.c where it belongs.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: handle async EAGAIN from NOQUEUE request
David Teigland [Thu, 31 Jan 2008 00:52:53 +0000 (16:52 -0800)]
ocfs2: handle async EAGAIN from NOQUEUE request

When using fsdlm, -EAGAIN is returned in the async callback for NOQUEUE
requests. Fix up dlmglue to expect this.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Remove CANCELGRANT from the view of dlmglue.
Joel Becker [Fri, 1 Feb 2008 22:45:08 +0000 (14:45 -0800)]
ocfs2: Remove CANCELGRANT from the view of dlmglue.

o2dlm has the non-standard behavior of providing a cancel callback
(unlock_ast) even when the cancel has failed (the locking operation
succeeded without canceling).  This is called CANCELGRANT after the
status code sent to the callback.  fs/dlm does not provide this
callback, so dlmglue must be changed to live without it.
o2dlm_unlock_ast_wrapper() in stackglue now ignores CANCELGRANT calls.

Because dlmglue no longer sees CANCELGRANT, ocfs2_unlock_ast() no longer
needs to check for it.  ocfs2_locking_ast() must catch that a cancel was
tried and clear the cancel state.

Making these changes opens up a locking race.  dlmglue uses the the
OCFS2_LOCK_BUSY flag to ensure only one thread is calling the dlm at any
one time.  But dlmglue must unlock the lockres before calling into the
dlm.  In the small window of time between unlocking the lockres and
calling the dlm, the downconvert thread can try to cancel the lock.  The
downconvert thread is checking the OCFS2_LOCK_BUSY flag - it doesn't
know that ocfs2_dlm_lock() has not yet been called.

Because ocfs2_dlm_lock() has not yet been called, the cancel operation
will just be a no-op.  There's nothing to cancel.  With CANCELGRANT,
dlmglue uses the CANCELGRANT callback to clear up the cancel state.
When it comes around again, it will retry the cancel.  Eventually, the
first thread will have called into ocfs2_dlm_lock(), and either the
lock or the cancel will succeed.  The downconvert thread can then do its
downconvert.

Without CANCELGRANT, there is nothing to clean up the cancellation
state.  The downconvert thread does not know to retry its operations.
More importantly, the original lock may be blocking on the other node
that is trying to cancel us.  With neither able to make progress, the
ast is never called and the cancellation state is never cleaned up that
way.  dlmglue is deadlocked.

The OCFS2_LOCK_PENDING flag is introduced to remedy this window.  It is
set at the same time OCFS2_LOCK_BUSY is.  Thus, the downconvert thread
can check whether the lock is cancelable.  If not, it just loops around
to try again.  Once ocfs2_dlm_lock() is called, the thread then clears
OCFS2_LOCK_PENDING and wakes the downconvert thread.  Now, if the
downconvert thread finds the lock BUSY, it can safely try to cancel it.
Whether the cancel works or not, the state will be properly set and the
lock processing can continue.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Fill node number during cluster stack init
Mark Fasheh [Wed, 30 Jan 2008 00:59:56 +0000 (16:59 -0800)]
ocfs2: Fill node number during cluster stack init

It doesn't make sense to query for a node number before connecting to the
cluster stack. This should be safe to do because node_num is only just
printed,
and we're actually only moving the setting of node num a small amount
further in the mount process.

[ Disconnect when node query fails -- Joel ]

Reviewed-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Move o2hb functionality into the stack glue.
Joel Becker [Wed, 30 Jan 2008 00:59:56 +0000 (16:59 -0800)]
ocfs2: Move o2hb functionality into the stack glue.

The last bit of classic stack used directly in ocfs2 code is o2hb.
Specifically, the check for heartbeat during mount and the call to
ocfs2_hb_ctl during unmount.

We create an extra API, ocfs2_cluster_hangup(), to encapsulate the call
to ocfs2_hb_ctl.  Other stacks will just leave hangup() empty.

The check for heartbeat is moved into ocfs2_cluster_connect().  It will
be matched by a similar check for other stacks.

With this change, only stackglue.c includes cluster/ headers.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Abstract out node number queries.
Joel Becker [Wed, 30 Jan 2008 23:38:24 +0000 (15:38 -0800)]
ocfs2: Abstract out node number queries.

ocfs2 asks the cluster stack for the local node's node number for two
reasons; to fill the slot map and to print it. While the slot map isn't
necessary for userspace cluster stacks, the printing is very nice for
debugging. Thus we add ocfs2_cluster_this_node() as a generic API to get
this value. It is anticipated that the slot map will not be used under a
userspace cluster stack, so validity checks of the node num only need to
exist in the slot map code. Otherwise, it just gets used and printed as an
opaque value.

[ Fixed up some "int" versus "unsigned int" issues and made osb->node_num
  truly opaque. --Mark ]

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Introduce the new ocfs2_cluster_connect/disconnect() API.
Joel Becker [Fri, 1 Feb 2008 22:39:35 +0000 (14:39 -0800)]
ocfs2: Introduce the new ocfs2_cluster_connect/disconnect() API.

This step introduces a cluster stack agnostic API for initializing and
exiting.  fs/ocfs2/dlmglue.c no longer uses o2cb/o2dlm knowledge to
connect to the stack.  It is all handled in stackglue.c.

heartbeat.c no longer needs to know how it gets called.
ocfs2_do_node_down() is now a clean recovery trigger.

The big gotcha is the ordering of initializations and de-initializations done
underneath ocfs2_cluster_connect().  ocfs2_dlm_init() used to do all
o2dlm initialization in one block.  Thus, the o2dlm functionality of
ocfs2_cluster_connect() is very straightforward.  ocfs2_dlm_shutdown(),
however, did a few things between de-registration of the eviction
callback and actually shutting down the domain.  Now de-registration and
shutdown of the domain are wrapped within the single
ocfs2_cluster_disconnect() call.  I've checked the code paths to make
sure we can safely tear down things in ocfs2_dlm_shutdown() before
calling ocfs2_cluster_disconnect().  The filesystem has already set
itself to ignore the callback.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Create the lock status block union.
Joel Becker [Fri, 1 Feb 2008 20:16:57 +0000 (12:16 -0800)]
ocfs2: Create the lock status block union.

Wrap the lock status block (lksb) in a union.  Later we will add a union
element for the fs/dlm lksb.  Create accessors for the status and lvb
fields.

Other than a debugging function, dlmglue.c does not directly reference
the o2dlm locking path anymore.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Use -errno instead of dlm_status for ocfs2_dlm_lock/unlock() API.
Joel Becker [Fri, 1 Feb 2008 20:15:37 +0000 (12:15 -0800)]
ocfs2: Use -errno instead of dlm_status for ocfs2_dlm_lock/unlock() API.

Change the ocfs2_dlm_lock/unlock() functions to return -errno values.
This is the first step towards elminiating dlm_status in
fs/ocfs2/dlmglue.c.  The change also passes -errno values to
->unlock_ast().

[ Fix a return code in dlmglue.c and change the error translation table into
  an array of ints. --Mark ]

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Use global DLM_ constants in generic code.
Joel Becker [Fri, 1 Feb 2008 20:14:57 +0000 (12:14 -0800)]
ocfs2: Use global DLM_ constants in generic code.

The ocfs2 generic code should use the values in <linux/dlmconstants.h>.
stackglue.c will convert them to o2dlm values.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Separate out dlm lock functions.
Joel Becker [Wed, 30 Jan 2008 01:37:32 +0000 (17:37 -0800)]
ocfs2: Separate out dlm lock functions.

This is the first in a series of patches to isolate ocfs2 from the
underlying cluster stack. Here we wrap the dlm locking functions with
ocfs2-specific calls. Because ocfs2 always uses the same dlm lock status
callbacks, we can eliminate the callbacks from the filesystem visible
functions.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: New slot map format
Joel Becker [Fri, 1 Feb 2008 20:06:54 +0000 (12:06 -0800)]
ocfs2: New slot map format

The old slot map had a few limitations:

- It was limited to one block, so the maximum slot count was 255.
- Each slot was signed 16bits, limiting node numbers to INT16_MAX.
- An empty slot was marked by the magic 0xFFFF (-1).

The new slot map format provides 32bit node numbers (UINT32_MAX), a
separate space to mark a slot in use, and extra room to grow.  The slot
map is now bounded by i_size, not a block.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Define the contents of the slot_map file.
Joel Becker [Fri, 1 Feb 2008 19:59:05 +0000 (11:59 -0800)]
ocfs2: Define the contents of the slot_map file.

The slot map file is merely an array of __le16.  Wrap it in a structure for
cleaner reference.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: De-magic the in-memory slot map.
Joel Becker [Fri, 1 Feb 2008 20:04:48 +0000 (12:04 -0800)]
ocfs2: De-magic the in-memory slot map.

The in-memory slot map uses the same magic as the on-disk one.  There is
a special value to mark a slot as invalid.  It relies on the size of
certain types and so on.

Write a new in-memory map that keeps validity as a separate field.  Outside
of the I/O functions, OCFS2_INVALID_SLOT now means what it is supposed to.
It also is no longer tied to the type size.

This also means that only the I/O functions refer to 16bit quantities.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: slot_map I/O based on max_slots.
Joel Becker [Fri, 1 Feb 2008 19:59:07 +0000 (11:59 -0800)]
ocfs2: slot_map I/O based on max_slots.

The slot map code assumed a slot_map file has one block allocated.
This changes the code to I/O as many blocks as will cover max_slots.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Change the recovery map to an array of node numbers.
Joel Becker [Fri, 1 Feb 2008 20:03:57 +0000 (12:03 -0800)]
ocfs2: Change the recovery map to an array of node numbers.

The old recovery map was a bitmap of node numbers.  This was sufficient
for the maximum node number of 254.  Going forward, we want node numbers
to be UINT32.  Thus, we need a new recovery map.

Note that we can't keep track of slots here.  We must write down the
node number to recovery *before* we get the locks needed to convert a
node number into a slot number.

The recovery map is now an array of unsigned ints, max_slots in size.
It moves to journal.c with the rest of recovery.

Because it needs to be initialized, we move all of recovery initialization
into a new function, ocfs2_recovery_init().  This actually cleans up
ocfs2_initialize_super() a little as well.  Following on, recovery cleaup
becomes part of ocfs2_recovery_exit().

A number of node map functions are rendered obsolete and are removed.

Finally, waiting on recovery is wrapped in a function rather than naked
checks on the recovery_event.  This is a cleanup from Mark.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Make ocfs2_slot_info private.
Joel Becker [Fri, 1 Feb 2008 20:01:05 +0000 (12:01 -0800)]
ocfs2: Make ocfs2_slot_info private.

Just use osb_lock around the ocfs2_slot_info data.  This allows us to
take the ocfs2_slot_info structure private in slot_info.c.  All access
is now via accessors.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoocfs2: Move slot map access into slot_map.c
Mark Fasheh [Fri, 1 Feb 2008 19:59:09 +0000 (11:59 -0800)]
ocfs2: Move slot map access into slot_map.c

journal.c and dlmglue.c would refresh the slot map by hand.  Instead, have
the update and clear functions do the work inside slot_map.c.  The eventual
result is to make ocfs2_slot_info defined privately in slot_map.c

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
16 years agoMerge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6
Linus Torvalds [Fri, 18 Apr 2008 15:39:39 +0000 (08:39 -0700)]
Merge branch 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6

* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: (87 commits)
  [XFS] Fix merge failure
  [XFS] The forward declarations for the xfs_ioctl() helpers and the
  [XFS] Update XFS documentation for noikeep/ikeep.
  [XFS] Update XFS Documentation for ikeep and ihashsize
  [XFS] Remove unused HAVE_SPLICE macro.
  [XFS] Remove CONFIG_XFS_SECURITY.
  [XFS] xfs_bmap_compute_maxlevels should be based on di_forkoff
  [XFS] Always use di_forkoff when checking for attr space.
  [XFS] Ensure the inode is joined in xfs_itruncate_finish
  [XFS] Remove periodic logging of in-core superblock counters.
  [XFS] fix logic error in xfs_alloc_ag_vextent_near()
  [XFS] Don't error out on good I/Os.
  [XFS] Catch log unmount failures.
  [XFS] Sanitise xfs_log_force error checking.
  [XFS] Check for errors when changing buffer pointers.
  [XFS] Don't allow silent errors in xfs_inactive().
  [XFS] Catch errors from xfs_imap().
  [XFS] xfs_bulkstat_one_dinode() never returns an error.
  [XFS] xfs_iflush_fork() never returns an error.
  [XFS] Catch unwritten extent conversion errors.
  ...

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Fri, 18 Apr 2008 15:39:24 +0000 (08:39 -0700)]
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (58 commits)
  ide: remove ide_init_default_irq() macro
  ide: move default IDE ports setup to ide_generic host driver
  ide: remove obsoleted "idex=noprobe" kernel parameter (take 2)
  ide: remove needless hwif->irq check from ide_hwif_configure()
  ide: init hwif->{io_ports,irq} explicitly in legacy VLB host drivers
  ide: limit legacy VLB host drivers to alpha, x86 and mips
  cmd640: init hwif->{io_ports,irq} explicitly
  cmd640: cleanup setup_device_ptrs()
  ide: add ide-4drives host driver (take 3)
  ide: remove ppc ifdef from init_ide_data()
  ide: remove ide_default_io_ctl() macro
  ide: remove CONFIG_IDE_ARCH_OBSOLETE_INIT
  ide: add CONFIG_IDE_ARCH_OBSOLETE_DEFAULTS (take 2)
  ppc/pmac: remove no longer needed IDE quirk
  ppc: don't include <linux/ide.h>
  ppc: remove ppc_ide_md
  ppc/pplus: remove ppc_ide_md.ide_init_hwif hook
  ppc/sandpoint: remove ppc_ide_md hooks
  ppc/lopec: remove ppc_ide_md hooks
  ppc/mpc8xx: remove ppc_ide_md hooks
  ...

16 years agoMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
Linus Torvalds [Fri, 18 Apr 2008 15:38:55 +0000 (08:38 -0700)]
Merge branch 'next' of git://git./linux/kernel/git/djbw/async_tx

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx:
  dmaengine: ack to flags: make use of the unused bits in the 'ack' field
  iop-adma: remove the workaround for missed interrupts on iop3xx
  async_tx: kill ->device_dependency_added
  async_tx: fix multiple dependency submission
  fsldma: Split the MPC83xx event from MPC85xx and refine irq codes.
  fsldma: Remove CONFIG_FSL_DMA_SELFTEST, keep fsl_dma_self_test() running always.

16 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Fri, 18 Apr 2008 15:38:06 +0000 (08:38 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (79 commits)
  ata-acpi: don't call _GTF for disabled drive
  sata_mv add temporary 3 second init delay for SiliconImage PMs
  sata_mv remove redundant edma init code
  sata_mv add basic port multiplier support
  sata_mv fix SOC flags, enable NCQ on SOC
  sata_mv disable hotplug for now
  sata_mv cosmetics
  sata_mv hardreset rework
  [libata] improve Kconfig help text for new PMP, SFF options
  libata: make EH fail gracefully if no reset method is available
  libata: Be a bit more slack about early devices
  libata: cable logic
  libata: move link onlineness check out of softreset methods
  libata: kill dead code paths in reset path
  pata_scc: fix build breakage
  libata: make PMP support optional
  libata: implement PMP helpers
  libata: separate PMP support code from core code
  libata: make SFF support optional
  libata: don't use ap->ioaddr in non-SFF drivers
  ...

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt
Linus Torvalds [Fri, 18 Apr 2008 15:37:41 +0000 (08:37 -0700)]
Merge git://git./linux/kernel/git/tglx/linux-2.6-hrt

* git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-hrt:
  clocksource: make clocksource watchdog cycle through online CPUs
  Documentation: move timer related documentation to a single place
  clockevents: optimise tick_nohz_stop_sched_tick() a bit
  locking: remove unused double_spin_lock()
  hrtimers: simplify lockdep handling
  timers: simplify lockdep handling
  posix-timers: fix shadowed variables
  timer_list: add annotations to workqueue.c
  hrtimer: use nanosleep specific restart_block fields
  hrtimer: add nanosleep specific restart_block member

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy...
Linus Torvalds [Fri, 18 Apr 2008 15:37:19 +0000 (08:37 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/shaggy/jfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/shaggy/jfs-2.6:
  jfs: replace __inline with inline
  jfs: le*_add_cpu conversion

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb
Linus Torvalds [Fri, 18 Apr 2008 15:37:01 +0000 (08:37 -0700)]
Merge git://git./linux/kernel/git/mingo/linux-2.6-kgdb

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-kgdb:
  kgdb: always use icache flush for sw breakpoints
  kgdb: fix SMP NMI kgdb_handle_exception exit race
  kgdb: documentation fixes
  kgdb: allow static kgdbts boot configuration
  kgdb: add documentation
  kgdb: Kconfig fix
  kgdb: add kgdb internal test suite
  kgdb: fix several kgdb regressions
  kgdb: kgdboc pl011 I/O module
  kgdb: fix optional arch functions and probe_kernel_*
  kgdb: add x86 HW breakpoints
  kgdb: print breakpoint removed on exception
  kgdb: clocksource watchdog
  kgdb: fix NMI hangs
  kgdb: fix kgdboc dynamic module configuration
  kgdb: document parameters
  x86: kgdb support
  consoles: polling support, kgdboc
  kgdb: core
  uaccess: add probe_kernel_write()

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux...
Linus Torvalds [Fri, 18 Apr 2008 15:25:51 +0000 (08:25 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/x86/linux-2.6-x86

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (613 commits)
  x86: standalone trampoline code
  x86: move suspend wakeup code to C
  x86: coding style fixes to arch/x86/kernel/acpi/sleep.c
  x86: setup_trampoline() - fix section mismatch warning
  x86: section mismatch fixes, #1
  x86: fix paranoia about using BIOS quickboot mechanism.
  x86: print out buggy mptable
  x86: use cpu_online()
  x86: use cpumask_of_cpu()
  x86: remove unnecessary tmp local variable
  x86: remove unnecessary memset()
  x86: use ioapic_read_entry() and ioapic_write_entry()
  x86: avoid redundant loop in io_apic_level_ack_pending()
  x86: remove superfluous initialisation in boot code.
  x86: merge mpparse_{32,64}.c
  x86: unify mp_register_gsi
  x86: unify mp_config_acpi_legacy_irqs
  x86: unify mp_register_ioapic
  x86: unify uniq_io_apic_id
  x86: unify smp_scan_config
  ...

16 years agoMerge branch 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc
Linus Torvalds [Fri, 18 Apr 2008 15:25:29 +0000 (08:25 -0700)]
Merge branch 'semaphore' of git://git./linux/kernel/git/willy/misc

* 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc:
  Remove DEBUG_SEMAPHORE from Kconfig
  Improve semaphore documentation
  Simplify semaphore implementation
  Add down_timeout and change ACPI to use it
  Introduce down_killable()
  Generic semaphore implementation
  Add semaphore.h to kernel_lock.c
  Fix quota.h includes

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Fri, 18 Apr 2008 15:20:06 +0000 (08:20 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (104 commits)
  IB/iser: Don't change itt endianness
  IB/mlx4: Update module version and release date
  IPoIB: Handle case when P_Key is deleted and re-added at same index
  IB/iser: Release connection resources on RDMA_CM_EVENT_DEVICE_REMOVAL event
  IB/mlx4: Fix incorrect comment
  IB/mlx4: Fix race when detaching a QP from a multicast group
  IB/ehca: Support all ibv_devinfo values in query_device() and query_port()
  RDMA/nes: Free IRQ before killing tasklet
  IB/mthca: Update module version and release date
  IB/mlx4: Update QP state if query QP succeeds
  IB/mthca: Update QP state if query QP succeeds
  RDMA/amso1100: Add check for NULL reply_msg in c2_intr()
  IB/mlx4: Add support for resizing CQs
  IB/mlx4: Add support for modifying CQ moderation parameters
  IPoIB: Support modifying IPoIB CQ event moderation
  IB/core: Add support for modify CQ
  IPoIB: Add basic ethtool support
  mlx4_core: Increase max number of QPs to 128K
  RDMA/amso1100: Add support for "send with invalidate" work requests
  IB/core: Add support for "send with invalidate" work requests
  ...

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Fri, 18 Apr 2008 15:19:40 +0000 (08:19 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/selinux-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  security: enhance DEFAULT_MMAP_MIN_ADDR description
  SELinux: add netport.[ch]
  SELinux: Add network port SID cache
  SELinux: turn mount options strings into defines
  selinux/ss/services.c should #include <linux/selinux.h>
  selinux: introduce permissive types
  selinux: remove ptrace_sid
  SELinux: requesting no permissions in avc_has_perm_noaudit is a BUG()
  security: code cleanup
  security: replace remaining __FUNCTION__ occurrences
  SELinux: create new open permission
  selinux: selinux/netlabel.c should #include "netlabel.h"
  SELinux: unify printk messages
  SELinux: remove unused backpointers from security objects
  SELinux: Correct the NetLabel locking for the sk_security_struct