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Dynamically create the kset instead of declaring it statically.
Also use the new kobj_attribute which cleans up this file a _lot_.
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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We don't need a "default" ktype for a kset. We should set this
explicitly every time for each kset. This change is needed so that we
can make ksets dynamic, and cleans up one of the odd, undocumented
assumption that the kset/kobject/ktype model has.
This patch is based on a lot of help from Kay Sievers.
Nasty bug in the block code was found by Dave Young
<hidave.darkstar@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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endianness annotations in networking code had been in place for quite a
while; in particular, sin_port and s_addr are annotated as big-endian.
Code in ocfs2 had __force casts added apparently to shut the sparse
warnings up; of course, these days they only serve to *produce* warnings
for no reason whatsoever...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It's almost never worth printing in that situation and we keep forgetting to
manually filter it out.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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...and fix a couple of bugs in the NBD, CIFS and OCFS2 socket handlers.
Looking at the sock->op->shutdown() handlers, it looks as if all of them
take a SHUT_RD/SHUT_WR/SHUT_RDWR argument instead of the
RCV_SHUTDOWN/SEND_SHUTDOWN arguments.
Add a helper, and then define the SHUT_* enum to ensure that kernel users
of shutdown() don't get confused.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Acked-by: Mark Fasheh <mark.fasheh@oracle.com>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We should subtract start of our IO from PAGE_CACHE_SIZE to get the right
length of the write we want to perform.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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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.
[akpm@linux-foundation.org: git-drm went and changed lots of stuff]
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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A kset should not have its name set directly, so dynamically set the
name at runtime.
This is needed to remove the static array in the kobject structure which
will be changed in a future patch.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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As bi_end_io is only called once when the reqeust 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: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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Instead of treating EAGAIN, returned from sendpage(), as an error, this
patch retries the operation.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (32 commits)
[PATCH] ocfs2: zero_user_page conversion
ocfs2: Support xfs style space reservation ioctls
ocfs2: support for removing file regions
ocfs2: update truncate handling of partial clusters
ocfs2: btree support for removal of arbirtrary extents
ocfs2: Support creation of unwritten extents
ocfs2: support writing of unwritten extents
ocfs2: small cleanup of ocfs2_write_begin_nolock()
ocfs2: btree changes for unwritten extents
ocfs2: abstract btree growing calls
ocfs2: use all extent block suballocators
ocfs2: plug truncate into cached dealloc routines
ocfs2: simplify deallocation locking
ocfs2: harden buffer check during mapping of page blocks
ocfs2: shared writeable mmap
ocfs2: factor out write aops into nolock variants
ocfs2: rework ocfs2_buffered_write_cluster()
ocfs2: take ip_alloc_sem during entire truncate
ocfs2: Add "preferred slot" mount option
[KJ PATCH] Replacing memset(<addr>,0,PAGE_SIZE) with clear_page() in fs/ocfs2/dlm/dlmrecovery.c
...
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sysfs is now completely out of driver/module lifetime game. After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners. Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.
This patch kills now unnecessary attribute->owner. Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.
For more info regarding lifetime rule cleanup, please read the
following message.
http://article.gmane.org/gmane.linux.kernel/510293
(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Tell o2cb_region_dev_write() to wake up if rmdir(2) happens on the
heartbeat region while it is starting up. Then o2hb_region_dev_write()
can check to see if it is alive and act accordingly. This prevents a hang
(not being woken) and a crash (if it's woken by a signal).
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Removing the local node configuration out from underneath a running
heartbeat is "bad". Provide an API in the ocfs2 nodemanager to request
a configfs dependancy on the local node, then use it in heartbeat.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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ocfs2 mounts require a heartbeat region. Use the new configfs_depend_item()
facility to actually depend on them so they can't go away from under us.
First, teach cluster/nodemanager.c to depend an item on the o2cb subsystem.
Then teach o2hb_register_callbacks to take a UUID and depend on the
appropriate region. Finally, teach all users of o2hb to pass a UUID or
NULL if they don't require a pin.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Convert the su_sem member of struct configfs_subsystem to a struct
mutex, as that's what it is. Also convert all the users and update
Documentation/configfs.txt and Documentation/configfs_example.c
accordingly.
[ Conflict in fs/dlm/config.c with commit
3168b0780d06ace875696f8a648d04d6089654e5 manually resolved. --Mark ]
Inspired-by: Satyam Sharma <ssatyam@cse.iitk.ac.in>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Some of the sysfs changes inadvertantly broke the simple runtime debug log
filtering employed in ocfs2. Fix this by properly exporting the masklog
category filter names.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Fix gcc warning and Oops that it causes:
fs/ocfs2/cluster/masklog.c:161: warning: assignment from incompatible pointer type
[ 2776.204120] OCFS2 Node Manager 1.3.3
[ 2776.211729] BUG: spinlock bad magic on CPU#0, modprobe/4424
[ 2776.214269] lock: ffff810021c8fe18, .magic: ffffffff, .owner: /6394416, .owner_cpu: 0
[ 2776.217864] [ 2776.217865] Call Trace:
[ 2776.219662] [<ffffffff803426c8>] spin_bug+0x9e/0xe9
[ 2776.221921] [<ffffffff803427bf>] _raw_spin_lock+0x23/0xf9
[ 2776.224417] [<ffffffff8051acf4>] _spin_lock+0x9/0xb
[ 2776.226676] [<ffffffff8033c3b1>] kobject_shadow_add+0x98/0x1ac
[ 2776.229367] [<ffffffff8033c4d0>] kobject_add+0xb/0xd
[ 2776.231665] [<ffffffff8033c4df>] kset_add+0xd/0xf
[ 2776.233845] [<ffffffff8033c5a6>] kset_register+0x23/0x28
[ 2776.236309] [<ffffffff8808ccb7>] :ocfs2_nodemanager:mlog_sys_init+0x68/0x6d
[ 2776.239518] [<ffffffff8808ccee>] :ocfs2_nodemanager:o2cb_sys_init+0x32/0x4a
[ 2776.242726] [<ffffffff880b80a6>] :ocfs2_nodemanager:init_o2nm+0xa6/0xd5
[ 2776.245772] [<ffffffff8025266c>] sys_init_module+0x1471/0x15d2
[ 2776.248465] [<ffffffff8033f250>] simple_strtoull+0x0/0xdc
[ 2776.250959] [<ffffffff8020948e>] system_call+0x7e/0x83
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Acked-by: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2:
ocfs2: Force use of GFP_NOFS in ocfs2_write()
ocfs2: fix sparse warnings in fs/ocfs2/cluster
ocfs2: fix sparse warnings in fs/ocfs2/dlm
ocfs2: fix sparse warnings in fs/ocfs2
[PATCH] Copy i_flags to ocfs2 inode flags on write
[PATCH] ocfs2: use __set_current_state()
ocfs2: Wrap access of directory allocations with ip_alloc_sem.
[PATCH] fs/ocfs2/: make 3 functions static
ocfs2: Implement compat_ioctl()
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We need to work on cleaning up the relationship between kobjects, ksets and
ktypes. The removal of 'struct subsystem' is the first step of this,
especially as it is not really needed at all.
Thanks to Kay for fixing the bugs in this patch.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Ocfs2 currently does cluster-wide node messaging to check the open state of
an inode during delete. This patch removes that mechanism in favor of an
inode cluster lock which is taken at shared read when an inode is first read
and dropped in clear_inode(). This allows a deleting node to test the
liveness of an inode by attempting to take an exclusive lock.
Signed-off-by: Tiger Yang <tiger.yang@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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We have noticed panic() hanging leading us to a situation in which
the node, while otherwise dead, is still disk heartbeating. This
leads to a hung cluster as the other nodes are waiting for this
node to stop disk heartbeating. This situation is only resolved
by power resetting the box.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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This means that a build-up and a teardown could race which would result in a
double-kthread_stop().
Protect the setting and clearing of hr_task with o2hb_live_lock, as it's not
a common thing and not performance critical.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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If ocfs2_register_hb_callbacks() succeeds on its first callback but fails
its second, it doesn't release the first on the way out. Fix that.
While we're at it, o2hb_unregister_callback() never returns anything but
0, so let's make it void.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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The semantic effect of insert_at_head is that it would allow new registered
sysctl entries to override existing sysctl entries of the same name. Which is
pain for caching and the proc interface never implemented.
I have done an audit and discovered that none of the current users of
register_sysctl care as (excpet for directories) they do not register
duplicate sysctl entries.
So this patch simply removes the support for overriding existing entries in
the sys_sysctl interface since no one uses it or cares and it makes future
enhancments harder.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Corey Minyard <minyard@acm.org>
Cc: Neil Brown <neilb@suse.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: David Chinner <dgc@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ocfs2 was did not have the binary number it uses under CTL_FS registered in
sysctl.h. Register it to avoid future conflicts, and change the name of the
definition to be in line with the rest of the sysctl numbers.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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As was already pointed out Mathieu Avila on Thu, 07 Sep 2006 03:15:25 -0700
that OCFS2 is expecting bio_add_page() to add pages to BIOs in an easily
predictable manner.
That is not true, especially for devices with own merge_bvec_fn().
Therefore OCFS2's heartbeat code is very likely to fail on such devices.
Move the bio_put() call into the bio's bi_end_io() function. This makes the
whole idea of trying to predict the behaviour of bio_add_page() unnecessary.
Removed compute_max_sectors() and o2hb_compute_request_limits().
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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When there is a lot of multithreaded I/O usage, two threads can collide
while sending out a message to the other nodes. This is due to the lack of
locking between threads while sending out the messages.
When a connected TCP send(), sendto(), or sendmsg() arrives in the Linux
kernel, it eventually comes through tcp_sendmsg(). tcp_sendmsg() protects
itself by acquiring a lock at invocation by calling lock_sock().
tcp_sendmsg() then loops over the buffers in the iovec, allocating
associated sk_buff's and cache pages for use in the actual send. As it does
so, it pushes the data out to tcp for actual transmission. However, if one
of those allocation fails (because a large number of large sends is being
processed, for example), it must wait for memory to become available. It
does so by jumping to wait_for_sndbuf or wait_for_memory, both of which
eventually cause a call to sk_stream_wait_memory(). sk_stream_wait_memory()
contains a code path that calls sk_wait_event(). Finally, sk_wait_event()
contains the call to release_sock().
The following patch adds a lock to the socket container in order to
properly serialize outbound requests.
From: Zhen Wei <zwei@novell.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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There is a small window where a joining node may not see the node(s) that
just died but are still part of the domain. To fix this, we must disallow
join requests if the joining node has a different node map.
A new field node_map is added to dlm_query_join_request to send the current
nodes nodemap along with join request. On the receiving end the nodes that
are part of the cluster verifies if this new node sees all the nodes that
are still part of the cluster. They disallow the join if the maps mismatch.
Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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This patch binds the o2net listener to the configured ip address
instead of INADDR_ANY for security. Fixes oss.oracle.com bugzilla#814.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Currently o2net allows one handler function per message type. This
patch adds the ability to call another function to be called after
the handler has returned the message to the other node.
Handlers are now given the option of returning a context (in the form of a
void **) which will be passed back into the post message handler function.
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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This was previously broken and migration of some locks had to be temporarily
disabled. We use a new (and backward-incompatible) set of network messages
to account for all references to a lock resources held across the cluster.
once these are all freed, the master node may then free the lock resource
memory once its local references are dropped.
Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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The patch allows the ocfs2 heartbeat thread to prioritize I/O which may
help cut down on spurious fencing. Most of this will be in the tools -
we can have a pid configfs attribute and let userspace (ocfs2_hb_ctl)
calls the ioprio_set syscall after starting heartbeat, but only cfq
scheduler supports I/O priorities now.
Signed-off-by: Zhen Wei <zwei@novell.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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All kcalloc() calls of the form "kcalloc(1,...)" are converted to the
equivalent kzalloc() calls, and a few kcalloc() calls with the incorrect
ordering of the first two arguments are fixed.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dominik Brodowski <linux@dominikbrodowski.net>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Greg KH <greg@kroah.com>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Modify the OCFS2 handshake to ensure essential timeouts are configured
identically on all nodes.
Only allow changes when there are no connected peers
Improves the logic in o2net_advance_rx() which broke now that
sizeof(struct o2net_handshake) is greater than sizeof(struct o2net_msg)
Included is the field for userspace-heartbeat timeout to avoid the need for
further protocol changes.
Uses a global spinlock to ensure the decisions to update configfs entries
are made on the correct value. The region covered by the spinlock when
incrementing the counter is much larger as this is the more critical case.
Small cleanup contributed by Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Beekhof <abeekhof@suse.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Allow configuration of OCFS2 timeouts from userspace via configfs
Signed-off-by: Andrew Beekhof <abeekhof@suse.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Subsequent patches (namely userspace heartbeat and configurable timeouts)
require access to the o2nm_cluster struct. This patch does the necessary
shuffling.
Signed-off-by: Andrew Beekhof <abeekhof@suse.de>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Fix up for make allyesconfig.
Signed-Off-By: David Howells <dhowells@redhat.com>
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This patch deletes redundant memcmp() while looking up in rb tree.
Signed-off-by: Akinbou Mita <akinobu.mita@gmail.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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OCFS2 puts inode meta data in the "lock value block" provided by the DLM.
Typically, i_generation is encoded in the lock name so that a deleted inode
on and a new one in the same block don't share the same lvb.
Unfortunately, that scheme means that the read in ocfs2_read_locked_inode()
is potentially thrown away as soon as the meta data lock is taken - we
cannot encode the lock name without first knowing i_generation, which
requires a disk read.
This patch encodes i_generation in the inode meta data lvb, and removes the
value from the inode meta data lock name. This way, the read can be covered
by a lock, and at the same time we can distinguish between an up to date and
a stale LVB.
This will help cold-cache stat(2) performance in particular.
Since this patch changes the protocol version, we take the opportunity to do
a minor re-organization of two of the LVB fields.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Actually replace the vote calls with the new dentry operations. Make any
necessary adjustments to get the scheme to work.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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This fixes things for devices which set max_sectors to 8.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Print a warning to the user when a node with a different dead count joins
the region.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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Give gcc the chance to compile out the debug logging code in ocfs2.
This saves some size at the expense of being able to debug the code.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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locking init cleanups:
- convert " = SPIN_LOCK_UNLOCKED" to spin_lock_init() or DEFINE_SPINLOCK()
- convert rwlocks in a similar manner
this patch was generated automatically.
Motivation:
- cleanliness
- lockdep needs control of lock initialization, which the open-coded
variants do not give
- it's also useful for -rt and for lock debugging in general
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Propagate errors received in o2hb_bio_end_io() back to the heartbeat thread
so it can skip re-arming the timer.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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