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2008-06-16ocfs2: Remove ->hangup() from stack glue operations.Joel Becker4-23/+6
The ->hangup() call was only used to execute ocfs2_hb_ctl. Now that the generic stack glue code handles this, the underlying stack drivers don't need to know about it. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-06-16ocfs2: Move the call of ocfs2_hb_ctl into the stack glue.Joel Becker3-48/+40
Take o2hb_stop() out of the o2cb code and make it part of the generic stack glue as ocfs2_leave_group(). This also allows us to remove the ocfs2_get_hb_ctl_path() function - everything to do with hb_ctl is now part of stackglue.c. o2cb no longer needs a ->hangup() function. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-06-16ocfs2: Move the hb_ctl_path sysctl into the stack glue.Joel Becker5-78/+89
ocfs2 needs to call out to the hb_ctl program at unmount for all cluster stacks. The first step is to move the hb_ctl_path sysctl out of the o2cb code and into the generic stack glue. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-31[PATCH 3/3] ocfs2/net: Silence build warningsSunil Mushran2-19/+41
This patch silences the build warnings concerning o2net_init_nst() and friends when building without CONFIG_DEBUG_FS enabled. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-31[PATCH 2/3] ocfs2/dlm: Silence build warningsSunil Mushran1-6/+6
This patch silences the build warnings concerning dlm_debug_init() and friends when building without CONFIG_DEBUG_FS enabled. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-31[PATCH 1/3] ocfs2/net: Silence build warningsSunil Mushran1-6/+6
This patch silences the build warnings concerning o2net_debugfs_init() and friends when building without CONFIG_DEBUG_FS enabled. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-31ocfs2: Rename 'user_stack' plugin structure to 'ocfs2_user_plugin'Joel Becker1-17/+17
The static structure describing the userspace cluster plugin for ocfs2 was named 'user_stack', which is a real pain when people are grep(1)ing the tree for the program stack object 'user_stack'. Change the name to something distinct and namespaced. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-22ocfs2 endianness fixesAl Viro1-2/+2
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-05-01ocfs2: Use GFP_NOFS in kmalloc during localalloc window moveSunil Mushran1-2/+2
kmalloc() during a localalloc window move can trigger the mm to prune the dcache which inturn can trigger the fs to delete an inode causing it start a recursive transaction. The fix also makes the change in kmalloc during localalloc shutdown just to be safe. Fixes oss bugzilla#901 http://oss.oracle.com/bugzilla/show_bug.cgi?id=901 Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-01ocfs2: Allow uid/gid/perm changes of symlinksSunil Mushran2-0/+6
This patch adds the ability to change attributes of a symlink. Fixes oss bugzilla#963 http://oss.oracle.com/bugzilla/show_bug.cgi?id=963 Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-01ocfs2/dlm: dlmdebug.c: make 2 functions staticAdrian Bunk1-3/+5
This patch makes the following needlessly global functions static: - stringify_lockname() - dlm_debug_put() Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-01ocfs2: make struct o2cb_stack_ops staticAdrian Bunk1-1/+1
This patch makes the needlessly global struct o2cb_stack_ops static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-01ocfs2: make struct ocfs2_control_device staticAdrian Bunk1-1/+1
This patch makes the needlessly global struct ocfs2_control_device static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-05-01ocfs2: Correct merge of 52f7c21 (Move /sys/o2cb to /sys/fs/o2cb)Joel Becker1-1/+1
Commit 52f7c21b613f80cb425d115c9e5b4ed958a133c0 was intended to move /sys/o2cb to /sys/fs/o2cb, providing /sys/o2cb as a symlink for backwards compatibility. However, the merge apparently added the symlink but failed to move the directory, resulting in a duplicate filename error. It's a one-line change that was missing. Signed-off-by: Joel Becker <joel.becker@oracle.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
2008-04-30mm: bdi: add separate writeback accounting capabilityMiklos Szeredi1-1/+1
Add a new BDI capability flag: BDI_CAP_NO_ACCT_WB. If this flag is set, then don't update the per-bdi writeback stats from test_set_page_writeback() and test_clear_page_writeback(). Misc cleanups: - convert bdi_cap_writeback_dirty() and friends to static inline functions - create a flag that includes all three dirty/writeback related flags, since almst all users will want to have them toghether Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-19[PATCH] r/o bind mounts: elevate write count for ioctls()Dave Hansen1-5/+6
Some ioctl()s can cause writes to the filesystem. Take these, and make them use mnt_want/drop_write() instead. [AV: updated] Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2008-04-18ocfs2/net: Add debug interface to o2netSunil Mushran6-3/+569
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>
2008-04-18ocfs2: Only build ocfs2/dlm with the o2cb stack moduleMark Fasheh1-1/+1
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>
2008-04-18ocfs2/cluster: Get rid of arguments to the timeout routinesJeff Mahoney1-27/+20
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>
2008-04-18ocfs2: Use BUG_ONJulia Lawall2-4/+2
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>
2008-04-18ocfs2: Convert ocfs2 over to unlocked_ioctlAndi Kleen3-13/+6
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>
2008-04-18ocfs2: Improve rename lockingJan Kara1-1/+1
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>
2008-04-18fs/ocfs2/aops.c: test for IS_ERR rather than 0Julia Lawall1-3/+3
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>
2008-04-18ocfs2: Add inode stealing for ocfs2_reserve_new_inodeTao Ma6-5/+116
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>
2008-04-18ocfs2: Add ac_alloc_slot in ocfs2_alloc_contextTao Ma3-0/+4
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>
2008-04-18ocfs2: Add a new parameter for ocfs2_reserve_suballoc_bitsTao Ma1-4/+18
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>
2008-04-18ocfs2: Enable cross extent block merge.Tao Ma1-8/+86
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>
2008-04-18ocfs2: Add support for cross extent blockTao Ma1-41/+325
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>
2008-04-18ocfs2: Move /sys/o2cb to /sys/fs/o2cbMark Fasheh1-0/+9
/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>
2008-04-18ocfs2: Reconnect after idle time out.Tao Ma2-15/+38
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>
2008-04-18ocfs2/dlm: Cleanup lockres printSunil Mushran1-11/+11
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>
2008-04-18ocfs2/dlm: Fix lockname in lockres print functionSunil Mushran1-75/+51
__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>
2008-04-18ocfs2/dlm: Move dlm_print_one_mle() from dlmmaster.c to dlmdebug.cSunil Mushran3-160/+85
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>
2008-04-18ocfs2/dlm: Dumps the purgelist into a debugfs fileSunil Mushran2-0/+72
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>
2008-04-18ocfs2/dlm: Dumps the mles into a debugfs fileSunil Mushran2-0/+120
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>
2008-04-18ocfs2/dlm: Move struct dlm_master_list_entry to dlmcommon.hSunil Mushran2-37/+35
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>
2008-04-18ocfs2/dlm: Dumps the lockres' into a debugfs fileSunil Mushran2-0/+255
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>
2008-04-18ocfs2/dlm: Dump the dlm state in a debugfs fileSunil Mushran4-0/+325
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>
2008-04-18ocfs2/dlm: Create debugfs dirsSunil Mushran4-2/+125
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>
2008-04-18ocfs2/dlm: Link all lockres' to a tracking listSunil Mushran3-0/+26
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>
2008-04-18ocfs2/dlm: Create slabcaches for lock and lockresSunil Mushran4-17/+99
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>
2008-04-18ocfs2/dlm: Rename slabcache dlm_mle_cache to o2dlm_mleSunil Mushran2-2/+4
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>
2008-04-18ocfs2: Allow selection of cluster plug-ins.Joel Becker1-4/+6
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>
2008-04-18ocfs2: Add kbuild for ocfs2_stack_user.koJoel Becker1-1/+6
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>
2008-04-18ocfs2: Change mlog_bug_on to BUG_ON in ocfs2_lockid.hJoel Becker1-1/+1
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>
2008-04-18ocfs2: add fsdlm to stackglueDavid Teigland3-6/+243
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>
2008-04-18ocfs2: Add the 'set version' message to the ocfs2_control device.Joel Becker1-12/+119
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>
2008-04-18ocfs2: Add the local node id to the handshake.Joel Becker1-49/+173
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>
2008-04-18ocfs2: Introduce the DOWN message to ocfs2_controlJoel Becker1-5/+89
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>
2008-04-18ocfs2: Start the ocfs2_control handshake.Joel Becker1-5/+139
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>
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