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path: root/fs/ocfs2/dlmglue.c
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* [PATCH] ocfs2: use list_for_each_entry where beneficalChristoph Hellwig2007-07-10
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* header cleaning: don't include smp_lock.h when not usedRandy Dunlap2007-05-08
| | | | | | | | | | | | Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [PATCH] fs/ocfs2/: make 3 functions staticAdrian Bunk2007-05-02
| | | | | | | | | | | This patch makes the following needlessly global functions static: - aops.c: ocfs2_write_data_page() - dlmglue.c: ocfs2_dump_meta_lvb_info() - file.c: ocfs2_set_inode_size() Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Cache extent recordsMark Fasheh2007-04-26
| | | | | | | | | | | | | | | The extent map code was ripped out earlier because of an inability to deal with holes. This patch adds back a simpler caching scheme requiring far less code. Our old extent map caching was designed back when meta data block caching in Ocfs2 didn't work very well, resulting in many disk reads. These days our metadata caching is much better, resulting in no un-necessary disk reads. As a result, extent caching doesn't have to be as fancy, nor does it have to cache as many extents. Keeping the last 3 extents seen should be sufficient to give us a small performance boost on some streaming workloads. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Fix up i_blocks calculation to know about holesMark Fasheh2007-04-26
| | | | | | | | Older file systems which didn't support holes did a dumb calculation of i_blocks based on i_size. This is no longer accurate, so fix things up to take actual allocation into account. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: temporarily remove extent map cachingMark Fasheh2007-04-26
| | | | | | | | | | | The code in extent_map.c is not prepared to deal with a subtree being rotated between lookups. This can happen when filling holes in sparse files. Instead of a lengthy patch to update the code (which would likely lose the benefit of caching subtree roots), we remove most of the algorithms and implement a simple path based lookup. A less ambitious extent caching scheme will be added in a later patch. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove delete inode voteTiger Yang2007-04-26
| | | | | | | | | | | 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>
* ocfs2: Local mounts should skip inode updatesMark Fasheh2007-04-26
| | | | | | | | | | We don't want the extent map and uptodate cache destruction in ocfs2_meta_lock_update() on a local mount, so skip that. This fixes several bugs with uptodate being cleared on buffers and extent maps being corrupted. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: always unmap in ocfs2_data_convert_worker()Mark Fasheh2006-12-28
| | | | | | | | Mmap-heavy clustered workloads were sometimes finding stale data on mmap reads. The solution is to call unmap_mapping_range() on any down convert of a data lock. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: local mountsSunil Mushran2006-12-07
| | | | | | | | | | This allows users to format an ocfs2 file system with a special flag, OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT. When the file system sees this flag, it will not use any cluster services, nor will it require a cluster configuration, thus acting like a 'local' file system. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: core atime update functionsTiger Yang2006-12-01
| | | | | | | This patch adds the core routines for updating atime in ocfs2. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: remove unused handle argument from ocfs2_meta_lock_full()Mark Fasheh2006-12-01
| | | | | | Now that this is unused and all callers pass NULL, we can safely remove it. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: remove unused ocfs2_handle_add_lock()Mark Fasheh2006-12-01
| | | | | | | | | | This gets us rid of a slab we no longer need, as well as removing the majority of what's left on ocfs2_journal_handle. ocfs2_commit_unstarted_handle() has no more real work to do, so remove that function too. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [2.6 patch] make ocfs2_create_new_lock() staticAdrian Bunk2006-12-01
| | | | | | | This patch makes the needlessly global ocfs2_create_new_lock() static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] inode_diet: Replace inode.u.generic_ip with inode.i_privateTheodore Ts'o2006-09-27
| | | | | | | | | | | | | | | | | | | | | | | | | The following patches reduce the size of the VFS inode structure by 28 bytes on a UP x86. (It would be more on an x86_64 system). This is a 10% reduction in the inode size on a UP kernel that is configured in a production mode (i.e., with no spinlock or other debugging functions enabled; if you want to save memory taken up by in-core inodes, the first thing you should do is disable the debugging options; they are responsible for a huge amount of bloat in the VFS inode structure). This patch: The filesystem or device-specific pointer in the inode is inside a union, which is pretty pointless given that all 30+ users of this field have been using the void pointer. Get rid of the union and rename it to i_private, with a comment to explain who is allowed to use the void pointer. This is just a cleanup, but it allows us to reuse the union 'u' for something something where the union will actually be used. [judith@osdl.org: powerpc build fix] Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Judith Lebzelter <judith@osdl.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* ocfs2: Teach ocfs2_drop_lock() to use ->set_lvb() callbackMark Fasheh2006-09-24
| | | | | | | | With this, we don't need to pass an additional struct with function pointer. Now that the callbacks are fully used, comment the remaining API. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove ->unblock lockres operationMark Fasheh2006-09-24
| | | | | | | | | | | Have ocfs2_process_blocked_lock() call ocfs2_generic_unblock_lock(), which gets to be ocfs2_unblock_lock() now that it's the only possible unblock function. Remove the ->unblock() callback from the structure, and all lock type specific unblock functions. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: move downconvert worker to lockres opsMark Fasheh2006-09-24
| | | | | | | This way lock types don't have to manually pass it to ocfs2_generic_unblock_lock(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove unused dlmglue functionsMark Fasheh2006-09-24
| | | | | | | The meta data unblocking code no longer needs ocfs2_do_unblock_meta() or ocfs2_can_downconvert_meta_lock(), so remove them. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Have the metadata lock use generic dlmglue functionsMark Fasheh2006-09-24
| | | | | | | | Fill in the ->check_downconvert and ->set_lvb callbacks with meta data specific operations and switch ocfs2_unblock_meta() to call ocfs2_generic_unblock_lock() Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Add ->set_lvb callback in dlmglueMark Fasheh2006-09-24
| | | | | | This allows a lock type to set the value block before downconvert. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Add ->check_downconvert callback in dlmglueMark Fasheh2006-09-24
| | | | | | This will allow lock types to force a requeue of a lock downconvert. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Check for refreshing locks in generic unblock functionMark Fasheh2006-09-24
| | | | | | Tidy up the exit path a bit too. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: don't unconditionally pass LVB flagsMark Fasheh2006-09-24
| | | | | | | | | Allow a lock type to specifiy whether it makes use of the LVB. The only type which does this right now is the meta data lock. This should save us some space on network messages since they won't have to needlessly transmit value blocks. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: combine inode and generic blocking AST functionsMark Fasheh2006-09-24
| | | | | | | There is extremely little difference between the two now. We can remove the callback from ocfs2_lock_res_ops as well. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Add ->get_osb() dlmglue locking operationMark Fasheh2006-09-24
| | | | | | Will be used to find the ocfs2_super structure from a given lockres. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: remove ->unlock_ast() callback from ocfs2_lock_res_opsMark Fasheh2006-09-24
| | | | | | | This was always defined to the same function in all locks, so clean things up by removing and passing ocfs2_unlock_ast() directly to the DLM. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: combine inode and generic AST functionsMark Fasheh2006-09-24
| | | | | | | There is extremely little difference between the two now. We can remove the callback from ocfs2_lock_res_ops as well. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Clean up lock resource refresh flagsMark Fasheh2006-09-24
| | | | | | | Use of the refresh mechanism is lock-type wide, so move knowledge of that to the ocfs2_lock_res_ops structure. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remove i_generation from inode lock namesMark Fasheh2006-09-24
| | | | | | | | | | | | | | | | | | | | | | | 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>
* ocfs2: Encode i_generation in the meta data lvbMark Fasheh2006-09-24
| | | | | | | | When i_generation is removed from the lockname, this will help us determine whether a meta data lvb has information that is in sync with the local struct inode. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Free up some space in the lvbMark Fasheh2006-09-24
| | | | | | | | lvb_version doesn't need to be a whole 32 bits. Make it an 8 bit field to free up some space. This should be backwards compatible until we use one of the fields, in which case we'd bump the lvb version anyway. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Add new cluster lock typeMark Fasheh2006-09-24
| | | | | | | | | | | | | | | | | | | Replace the dentry vote mechanism with a cluster lock which covers a set of dentries. This allows us to force d_delete() only on nodes which actually care about an unlink. Every node that does a ->lookup() gets a read only lock on the dentry, until an unlink during which the unlinking node, will request an exclusive lock, forcing the other nodes who care about that dentry to d_delete() it. The effect is that we retain a very lightweight ->d_revalidate(), and at the same time get to make large improvements to the average case performance of the ocfs2 unlink and rename operations. This patch adds the cluster lock type which OCFS2 can attach to dentries. A small number of fs/ocfs2/dcache.c functions are stubbed out so that this change can compile. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Update dlmglue for new dlmlock() APIMark Fasheh2006-09-24
| | | | | | | File system lock names are very regular right now, so we really only need to pass an extra parameter to dlmlock(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: add ext2 attributesHerbert Poetzl2006-09-20
| | | | | | | | | Support immutable, and other attributes. Some renaming and other minor fixes done by myself. Signed-off-by: Herbert Poetzl <herbert@13thfloor.at> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: clean up some osb fieldsMark Fasheh2006-06-29
| | | | | | | | Get rid of osb->uuid, osb->proc_sub_dir, and osb->osb_id. Those fields were unused, or could easily be removed. As a result, we also no longer need MAX_OSB_ID or ocfs2_globals_lock. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] spin/rwlock init cleanupsIngo Molnar2006-06-27
| | | | | | | | | | | | | | | | | | | | | 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>
* [PATCH] Make most file operations structs in fs/ constArjan van de Ven2006-03-28
| | | | | | | | | | | | | | This is a conversion to make the various file_operations structs in fs/ const. Basically a regexp job, with a few manual fixups The goal is both to increase correctness (harder to accidentally write to shared datastructures) and reducing the false sharing of cachelines with things that get dirty in .data (while .rodata is nicely read only and thus cache clean) Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* ocfs2: don't use MLF* in the file systemMark Fasheh2006-03-24
| | | | Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] OCFS2: The Second Oracle Cluster FilesystemMark Fasheh2006-01-03
The OCFS2 file system module. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
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