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* ocfs2: clean up bh null checksMark Fasheh2008-01-25
| | | | | | | | | If we know a buffer_head is non-null, then brelse() is unnecessary and put_bh() can be used instead. Also, an explicit check for NULL is unnecessary when using brelse(). This patch only covers buffer_head_io.c and resize.c, which have recently added code which exhibits this problem. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: document access rules for blocked_lock_listMark Fasheh2008-01-25
| | | | | | | | | ocfs2_super->blocked_lock_list and ocfs2_super->blocked_lock_count have some usage restrictions which aren't immediately obvious to anyone reading the code. It's a good idea to document this so that we avoid making costly mistakes in the future. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: bump version numberMark Fasheh2008-01-25
| | | | | | | Bump the printed version to 1.5.0. This helps us quickly identify which version of Ocfs2 a bug filer is running. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2/dlm: Clear joining_node on hearbeat node downTao Ma2008-01-25
| | | | | | | | | | | | | | | | Currently the process of dlm join contains 2 steps: query join and assert join. After query join, the joined node will set its joining_node. So if the joining node happens to panic before the 2nd step, the joined node will fail to clear its joining_node flag because that node isn't in the domain map. It at least cause 2 problems. 1. All the new join request will fail. So no new node can mount the volume. 2. The joined node can't umount the volume since during the umount process it has to wait for the joining_node to be unknown. So the umount will be hanged. The solution is to clear the joining_node before we check the domain map. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: convert byte order of constant instead of variableMarcin Slusarz2008-01-25
| | | | | | | | Convert byte order of constant instead of variable it will be done at compile time vs run time. Remove unused le32_and_cpu. Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Update default cluster timeoutsSunil Mushran2008-01-25
| | | | | | | | | | Lots of people are having trouble with the default timeouts, which are too low. These new values are derived from an informal survey taken on ocfs2-users, as well as data from bug reports. This should reduce the amount of cluster disconnects and subsequent fencing seen during normal workloads. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: printf fixesJan Kara2008-01-25
| | | | | | | Explicitely convert loff_t to long long in printf. Just for sure... Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Use generic_file_llseekJan Kara2008-01-25
| | | | | | | | We should use generic_file_llseek() and not default_llseek() so that s_maxbytes gets properly checked when seeking. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Safer read_inline_data()Jan Kara2008-01-25
| | | | | | | | | In ocfs2_read_inline_data() we should store file size in loff_t. Although the file size should fit in 32 bits we cannot be sure in case filesystem is corrupted. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Silence false lockdep warningsJan Kara2008-01-25
| | | | | | | | | Create separate lockdep lock classes for system file's i_mutexes. They are used to guard allocations and similar things and thus rank differently than i_mutex of a regular file or directory. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH 2/2] ocfs2: cluster aware flock()Mark Fasheh2008-01-25
| | | | | | | | Hook up ocfs2_flock(), using the new flock lock type in dlmglue.c. A new mount option, "localflocks" is added so that users can revert to old functionality as need be. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH 1/2] ocfs2: add flock lock typeMark Fasheh2008-01-25
| | | | | | | | | | | | | | | | | | This adds a new dlmglue lock type which is intended to back flock() requests. Since these locks are driven from userspace, usage rules are much more liberal than the typical Ocfs2 internal cluster lock. As a result, we can't make use of most dlmglue features - lock caching and lock level optimizations in particular. Additionally, userspace is free to deadlock itself, so we have to deal with that in the same way as the rest of the kernel - by allowing a signal to abort a lock request. In order to keep ocfs2_cluster_lock() complexity down, ocfs2_file_lock() does it's own dlm coordination. We still use the same helper functions though, so duplicated code is kept to a minimum. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Local alloc window size changeable via mount optionSunil Mushran2008-01-25
| | | | | | | | | | | | | | Local alloc is a performance optimization in ocfs2 in which a node takes a window of bits from the global bitmap and then uses that for all small local allocations. This window size is fixed to 8MB currently. This patch allows users to specify the window size in MB including disabling it by passing in 0. If the number specified is too large, the fs will use the default value of 8MB. mount -o localalloc=X /dev/sdX /mntpoint Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Support commit= mount optionMark Fasheh2008-01-25
| | | | | | | | | Mostly taken from ext3. This allows the user to set the jbd commit interval, in seconds. The default of 5 seconds stays the same, but now users can easily increase the commit interval. Typically, this would be increased in order to benefit performance at the expense of data-safety. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Add missing permission checksMark Fasheh2008-01-25
| | | | | | | Check that an online resize is being driven by a user with permission to change system resource limits. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH 2/2] ocfs2: Implement group add for online resizeTao Ma2008-01-25
| | | | | | | | | | | | | | | | This patch adds the ability for a userspace program to request that a properly formatted cluster group be added to the main allocation bitmap for an Ocfs2 file system. The request is made via an ioctl, OCFS2_IOC_GROUP_ADD. On a high level, this is similar to ext3, but we use a different ioctl as the structure which has to be passed through is different. During an online resize, tunefs.ocfs2 will format any new cluster groups which must be added to complete the resize, and call OCFS2_IOC_GROUP_ADD on each one. Kernel verifies that the core cluster group information is valid and then does the work of linking it into the global allocation bitmap. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH 1/2] ocfs2: Add group extend for online resizeTao Ma2008-01-25
| | | | | | | | | | | | | This patch adds the ability for a userspace program to request an extend of last cluster group on an Ocfs2 file system. The request is made via ioctl, OCFS2_IOC_GROUP_EXTEND. This is derived from EXT3_IOC_GROUP_EXTEND, but is obviously Ocfs2 specific. tunefs.ocfs2 would call this for an online-resize operation if the last cluster group isn't full. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Initalize bitmap_cpg of ocfs2_super to be the maximum.Tao Ma2008-01-25
| | | | | | | | | | | | | | | | | | | | This value is initialized from global_bitmap->id2.i_chain.cl_cpg. If there is only 1 group, it will be equal to the total clusters in the volume. So as for online resize, it should change for all the nodes in the cluster. It isn't easy and there is no corresponding lock for it. bitmap_cpg is only used in 2 areas: 1. Check whether the suballoc is too large for us to allocate from the global bitmap, so it is little used. And now the suballoc size is 2048, it rarely meet this situation and the check is almost useless. 2. Calculate which group a cluster belongs to. We use it during truncate to figure out which cluster group an extent belongs too. But we should be OK if we increase it though as the cluster group calculated shouldn't change and we only ever have a small bitmap_cpg on file systems with a single cluster group. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Readpages supportMark Fasheh2008-01-25
| | | | | | | | Add ->readpages support to Ocfs2. This is rather trivial - all it required is a small update to ocfs2_get_block (for mapping full extents via b_size) and an ocfs2_readpages() function which partially mirrors ocfs2_readpage(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Rename ocfs2_meta_[un]lockMark Fasheh2008-01-25
| | | | | | | Call this the "inode_lock" now, since it covers both data and meta data. This patch makes no functional changes. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove data locksMark Fasheh2008-01-25
| | | | | | | | | | | | | | The meta lock now covers both meta data and data, so this just removes the now-redundant data lock. Combining locks saves us a round of lock mastery per inode and one less lock to ping between nodes during read/write. We don't lose much - since meta locks were always held before a data lock (and at the same level) ordered writeout mode (the default) ensured that flushing for the meta data lock also pushed out data anyways. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Add data downconvert worker to inode lockMark Fasheh2008-01-25
| | | | | | | | In order to extend inode lock coverage to inode data, we use the same data downconvert worker with only a small modification to only do work for regular files. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove mount/unmount votesMark Fasheh2008-01-25
| | | | | | | | | | | | The node maps that are set/unset by these votes are no longer relevant, thus we can remove the mount and umount votes. Since those are the last two remaining votes, we can also remove the entire vote infrastructure. The vote thread has been renamed to the downconvert thread, and the small amount of functionality related to managing it has been moved into fs/ocfs2/dlmglue.c. All references to votes have been removed or updated. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove fs dependency on ocfs2_heartbeat moduleMark Fasheh2008-01-25
| | | | | | | | | Now that the dlm exposes domain information to us, we don't need generic node up / node down callbacks. And since the DLM is only telling us when a node goes down unexpectedly, we no longer need to optimize away node down callbacks via the umount map. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2_dlm: Call node eviction callbacks from heartbeat handlerMark Fasheh2008-01-25
| | | | | | | | With this, a dlm client can take advantage of the group protocol in the dlm to get full notification whenever a node within the dlm domain leaves unexpectedly. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* kset: convert ocfs2 to use kset_createGreg Kroah-Hartman2008-01-24
| | | | | | | | | | | | 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>
* kobject: remove struct kobj_type from struct ksetGreg Kroah-Hartman2008-01-24
| | | | | | | | | | | | | | | | | 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>
* ocfs2: Re-journal buffers after transaction extendMark Fasheh2007-12-17
| | | | | | | | | ocfs2_extend_trans() might call journal_restart() which will commit dirty buffers and then restart the transaction. This means that any buffers which still need changes should be passed to journal_access() again. Some paths during extend weren't doing this right. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Allow for debugging of transaction extendsMark Fasheh2007-12-17
| | | | | | | | | The nastiest cases of transaction extends are also the rarest. We can expose them more quickly at the expense of performance by going straight to the journal_restart() in ocfs2_extend_trans(). Wrap things in OCFS2_DEBUG_FS so that we only do this when "expensive debugging" is turned on. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Don't panic when truncating an empty extentMark Fasheh2007-12-17
| | | | | | | This BUG_ON() was unintentionally left in after the sparse file support was written. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: fix exit-while-locked bug in ocfs2_queue_orphans()Mark Fasheh2007-12-17
| | | | | | | We're holding the cluster lock when a failure might happen in ocfs2_dir_foreach() so it needs to be released. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* remove nonsense force-casts from ocfs2Al Viro2007-12-05
| | | | | | | | | | | | 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>
* ocfs2: reverse inline-data truncate argsMark Fasheh2007-11-27
| | | | | | | | | | | ocfs2_truncate() and ocfs2_remove_inode_range() had reversed their "set i_size" arguments to ocfs2_truncate_inline(). Fix things so that truncate sets i_size, and punching a hole ignores it. This exposed a problem where punching a hole in an inline-data file wasn't updating the page cache, so fix that too. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Fix comparison in ocfs2_size_fits_inline_data()Mark Fasheh2007-11-27
| | | | | | This was causing us to prematurely push out inline data by one byte. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove bug statement in ocfs2_dentry_iput()Mark Fasheh2007-11-27
| | | | | | | | | | | | | | The existing bug statement didn't take into account unhashed dentries which might not have a cluster lock on them. This could happen if a node exporting the file system via NFS is rebooted, re-exported to nfs clients and then unmounted. It's fine in this case to not have a dentry cluster lock. Just remove the bug statement and replace it with an error print, which does the proper checks. Though we want to know if something has happened which might have prevented a cluster lock from being created, it's definitely not necessary to panic the machine for this. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] ocfs2: Remove expensive bitmap scanningJan Kara2007-11-27
| | | | | | | | | | Enable expensive bitmap scanning only if DEBUG option is enabled. The bitmap scanning quite loads the CPU and on my machine the write throughput of dd if=/dev/zero of=/ocfs2/file bs=1M count=500 conv=sync improves from 37 MB/s to 45.4 MB/s in local mode... Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: log valid inode # on bad inodeMark Fasheh2007-11-27
| | | | | | | | | If the inode block isn't valid then we don't want to print the value from that, instead print the block number which was passed in (which should always be correct). Also, turn this into a debug print for now - folks who hit an actual problem always have other logs indicating what the source is. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Filter -ENOSPC in mlog_errno()Mark Fasheh2007-11-27
| | | | | | | 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>
* [PATCH] fs/ocfs2: Add missing "space"Joe Perches2007-11-27
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Reset journal parameters after s_mount_opt updateMark Fasheh2007-11-27
| | | | | | | Right now we're just setting them from the existing parameters, not the new ones that a remount specified. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [NET]: Add the helper kernel_sock_shutdown()Trond Myklebust2007-11-12
| | | | | | | | | | | | | | | ...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>
* ocfs2: fix rename vs unlink raceSrinivas Eeda2007-11-06
| | | | | | | | | | If another node unlinks the destination while ocfs2_rename() is waiting on a cluster lock, ocfs2_rename() simply logs an error and continues. This causes a crash because the renaming node is now trying to delete a non-existent inode. The correct solution is to return -ENOENT. Signed-off-by: Srinivas Eeda <srinivas.eeda@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] Fix possibly too long write in o2hb_setup_one_bio()Jan Kara2007-11-06
| | | | | | | | 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>
* ocfs2: fix write() performance regressionMark Fasheh2007-11-06
| | | | | | | | | On file systems which don't support sparse files, Ocfs2_map_page_blocks() was reading blocks on appending writes. This caused write performance to suffer dramatically. Fix this by detecting an appending write on a nonsparse fs and skipping the read. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Commit journal on sync writesMark Fasheh2007-11-06
| | | | | | | | | We're missing a meta data commit for extending sync writes. In thoery, write could return with the meta data required to read the data uncommitted to disk. Fix that by detecting an allocating write and forcing a journal commit in the sync case. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Re-order iput in ocfs2_drop_dentry_lockMark Fasheh2007-11-06
| | | | | | | | | | | | Do this to avoid a theoretical (I haven't seen this in practice) race where the downconvert thread might drop the dentry lock, allowing a remote unlink to proceed before dropping the inode locks. This could bounce access to the orphan dir between nodes. There doesn't seem to be a need to do the same in ocfs2_dentry_iput() as that's never called for the last ref drop from the downconvert thread. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Create locks at initially requested levelMark Fasheh2007-11-06
| | | | | | | | | | | | | | If we have not yet created a cluster lock, ocfs2_cluster_lock() will first create it at NLMODE, and then convert the lock to either PRMODE or EXMODE (whichever is requested). Change ocfs2_cluster_lock() to just create the lock at the initially requested level. ocfs2_locking_ast() handles this case fine, so the only update required was in setup of locking state. This should reduce the number of network messages required for a new lock by one, providing an incremental performance enhancement. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] Fix priority mistakes in fs/ocfs2/{alloc.c, dlmglue.c}Roel Kluin2007-11-06
| | | | | | | Fixes priority mistakes similar to '!x & y' Signed-off-by: Roel Kluin <12o3l@tiscali.nl> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [2.6 patch] make ocfs2_find_entry_el() staticAdrian Bunk2007-11-06
| | | | | | | ocfs2_find_entry_el() can become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* exportfs: make struct export_operations constChristoph Hellwig2007-10-22
| | | | | | | | | | | | | | | | | | | | | | | Now that nfsd has stopped writing to the find_exported_dentry member we an mark the export_operations const Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Neil Brown <neilb@suse.de> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: <linux-ext4@vger.kernel.org> Cc: Dave Kleikamp <shaggy@austin.ibm.com> Cc: Anton Altaparmakov <aia21@cantab.net> Cc: David Chinner <dgc@sgi.com> Cc: Timothy Shimmin <tes@sgi.com> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Hugh Dickins <hugh@veritas.com> Cc: Chris Mason <mason@suse.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: "Vladimir V. Saveliev" <vs@namesys.com> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: 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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