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* Merge branch 'upstream-linus' of ↵Linus Torvalds2009-09-23
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2 * 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (85 commits) ocfs2: Use buffer IO if we are appending a file. ocfs2: add spinlock protection when dealing with lockres->purge. dlmglue.c: add missed mlog lines ocfs2: __ocfs2_abort() should not enable panic for local mounts ocfs2: Add ioctl for reflink. ocfs2: Enable refcount tree support. ocfs2: Implement ocfs2_reflink. ocfs2: Add preserve to reflink. ocfs2: Create reflinked file in orphan dir. ocfs2: Use proper parameter for some inode operation. ocfs2: Make transaction extend more efficient. ocfs2: Don't merge in 1st refcount ops of reflink. ocfs2: Modify removing xattr process for refcount. ocfs2: Add reflink support for xattr. ocfs2: Create an xattr indexed block if needed. ocfs2: Call refcount tree remove process properly. ocfs2: Attach xattr clusters to refcount tree. ocfs2: Abstract ocfs2 xattr tree extend rec iteration process. ocfs2: Abstract the creation of xattr block. ocfs2: Remove inode from ocfs2_xattr_bucket_get_name_value. ...
| * ocfs2: Call refcount tree remove process properly.Tao Ma2009-09-22
| | | | | | | | | | | | | | | | | | | | | | | | | | Now with xattr refcount support, we need to check whether we have xattr refcounted before we remove the refcount tree. Now the mechanism is: 1) Check whether i_clusters == 0, if no, exit. 2) check whether we have i_xattr_loc in dinode. if yes, exit. 2) Check whether we have inline xattr stored outside, if yes, exit. 4) Remove the tree. Signed-off-by: Tao Ma <tao.ma@oracle.com>
| * ocfs2: CoW a reflinked cluster when it is truncated.Tao Ma2009-09-22
| | | | | | | | | | | | | | | | | | | | | | When we truncate a file to a specific size which resides in a reflinked cluster, we need to CoW it since ocfs2_zero_range_for_truncate will zero the space after the size(just another type of write). So we add a "max_cpos" in ocfs2_refcount_cow so that it will stop when it hit the max cluster offset. Signed-off-by: Tao Ma <tao.ma@oracle.com>
| * ocfs2: Integrate CoW in file write.Tao Ma2009-09-22
| | | | | | | | | | | | | | | | | | When we use mmap, we CoW the refcountd clusters in ocfs2_write_begin_nolock. While for normal file io(including directio), we do CoW in ocfs2_prepare_inode_for_write. Signed-off-by: Tao Ma <tao.ma@oracle.com>
| * ocfs2: Pass ocfs2_caching_info into ocfs_init_*_extent_tree().Joel Becker2009-09-04
| | | | | | | | | | | | | | With this commit, extent tree operations are divorced from inodes and rely on ocfs2_caching_info. Phew! Signed-off-by: Joel Becker <joel.becker@oracle.com>
| * ocfs2: ocfs2_add_clusters_in_btree() no longer needs struct inode.Joel Becker2009-09-04
| | | | | | | | | | | | | | One more function that doesn't need a struct inode to pass to its children. Signed-off-by: Joel Becker <joel.becker@oracle.com>
| * ocfs2: Pass struct ocfs2_caching_info to the journal functions.Joel Becker2009-09-04
| | | | | | | | | | | | | | | | | | | | | | | | | | The next step in divorcing metadata I/O management from struct inode is to pass struct ocfs2_caching_info to the journal functions. Thus the journal locks a metadata cache with the cache io_lock function. It also can compare ci_last_trans and ci_created_trans directly. This is a large patch because of all the places we change ocfs2_journal_access..(handle, inode, ...) to ocfs2_journal_access..(handle, INODE_CACHE(inode), ...). Signed-off-by: Joel Becker <joel.becker@oracle.com>
* | ocfs2: Update syncing after splicing to match generic versionJan Kara2009-09-14
| | | | | | | | | | | | | | | | | | | | | | | | Update ocfs2 specific splicing code to use generic syncing helper. The sync now does not happen under rw_lock because generic_write_sync() acquires i_mutex which ranks above rw_lock. That should not matter because standard fsync path does not hold it either. Acked-by: Joel Becker <Joel.Becker@oracle.com> Acked-by: Mark Fasheh <mfasheh@suse.com> CC: ocfs2-devel@oss.oracle.com Signed-off-by: Jan Kara <jack@suse.cz>
* | ocfs2: Use __generic_file_aio_write instead of generic_file_aio_write_nolockJan Kara2009-09-14
|/ | | | | | | | | | | Use the new helper. We have to submit data pages ourselves in case of O_SYNC write because __generic_file_aio_write does not do it for us. OCFS2 developpers might think about moving the sync out of i_mutex which seems to be easily possible but that's out of scope of this patch. CC: ocfs2-devel@oss.oracle.com Acked-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Jan Kara <jack@suse.cz>
* ocfs2: Initialize count in aio_write before generic_write_checksGoldwyn Rodrigues2009-07-20
| | | | | | | | | generic_write_checks() expects count to be initialized to the size of the write. Writes to files open with O_DIRECT|O_LARGEFILE write 0 bytes because count is uninitialized. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: log the actual return value of ocfs2_file_aio_write()Wengang Wang2009-07-10
| | | | | | | | in ocfs2_file_aio_write(), log_exit() could don't log the value which is really returned. this patch fixes it. Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Update atime in splice read if necessary.Tao Ma2009-06-22
| | | | | | | | | We should call ocfs2_inode_lock_atime instead of ocfs2_inode_lock in ocfs2_file_splice_read like we do in ocfs2_file_aio_read so that we can update atime in splice read if necessary. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: fdatasync should skip unimportant metadata writeoutHisashi Hifumi2009-06-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In ocfs2, fdatasync and fsync are identical. I think fdatasync should skip committing transaction when inode->i_state is set just I_DIRTY_SYNC and this indicates only atime or/and mtime updates. Following patch improves fdatasync throughput. #sysbench --num-threads=16 --max-requests=300000 --test=fileio --file-block-size=4K --file-total-size=16G --file-test-mode=rndwr --file-fsync-mode=fdatasync run Results: -2.6.30-rc8 Test execution summary: total time: 107.1445s total number of events: 119559 total time taken by event execution: 116.1050 per-request statistics: min: 0.0000s avg: 0.0010s max: 0.1220s approx. 95 percentile: 0.0016s Threads fairness: events (avg/stddev): 7472.4375/303.60 execution time (avg/stddev): 7.2566/0.64 -2.6.30-rc8-patched Test execution summary: total time: 86.8529s total number of events: 300016 total time taken by event execution: 24.3077 per-request statistics: min: 0.0000s avg: 0.0001s max: 0.0336s approx. 95 percentile: 0.0001s Threads fairness: events (avg/stddev): 18751.0000/718.75 execution time (avg/stddev): 1.5192/0.05 Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Acked-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Fix possible deadlock with quotas in ocfs2_setattr()Jan Kara2009-06-03
| | | | | | | | | | | | | | | | | | | We called vfs_dq_transfer() with global quota file lock held. This can lead to deadlocks as if vfs_dq_transfer() has to allocate new quota structure, it calls ocfs2_dquot_acquire() which tries to get quota file lock again and this can block if another node requested the lock in the mean time. Since we have to call vfs_dq_transfer() with transaction already started and quota file lock ranks above the transaction start, we cannot just rely on ocfs2_dquot_acquire() or ocfs2_dquot_release() on getting the lock if they need it. We fix the problem by acquiring pointers to all quota structures needed by vfs_dq_transfer() already before calling the function. By this we are sure that all quota structures are properly allocated and they can be freed only after we drop references to them. Thus we don't need quota file lock anywhere inside vfs_dq_transfer(). Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: fix i_mutex locking in ocfs2_splice_to_file()Miklos Szeredi2009-04-15
| | | | | | | | | | Rearrange locking of i_mutex on destination and call to ocfs2_rw_lock() so locks are only held while buffers are copied with the pipe_to_file() actor, and not while waiting for more data on the pipe. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* splice: fix deadlock in splicing to fileMiklos Szeredi2009-04-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a possible deadlock in generic_file_splice_write(), splice_from_pipe() and ocfs2_file_splice_write(): - task A calls generic_file_splice_write() - this calls inode_double_lock(), which locks i_mutex on both pipe->inode and target inode - ordering depends on inode pointers, can happen that pipe->inode is locked first - __splice_from_pipe() needs more data, calls pipe_wait() - this releases lock on pipe->inode, goes to interruptible sleep - task B calls generic_file_splice_write(), similarly to the first - this locks pipe->inode, then tries to lock inode, but that is already held by task A - task A is interrupted, it tries to lock pipe->inode, but fails, as it is already held by task B - ABBA deadlock Fix this by explicitly ordering locks: the outer lock must be on target inode and the inner lock (which is later unlocked and relocked) must be on pipe->inode. This is OK, pipe inodes and target inodes form two nonoverlapping sets, generic_file_splice_write() and friends are not called with a target which is a pipe. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz> Acked-by: Mark Fasheh <mfasheh@suse.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* remove lots of double-semicolonsFernando Carrijo2009-01-08
| | | | | | | | | | | | | Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Acked-by: Theodore Ts'o <tytso@mit.edu> Acked-by: Mark Fasheh <mfasheh@suse.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: James Morris <jmorris@namei.org> Acked-by: Casey Schaufler <casey@schaufler-ca.com> Acked-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.Joel Becker2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | | The per-metadata-type ocfs2_journal_access_*() functions hook up jbd2 commit triggers and allow us to compute metadata ecc right before the buffers are written out. This commit provides ecc for inodes, extent blocks, group descriptors, and quota blocks. It is not safe to use extened attributes and metaecc at the same time yet. The ocfs2_extent_tree and ocfs2_path abstractions in alloc.c both hide the type of block at their root. Before, it didn't matter, but now the root block must use the appropriate ocfs2_journal_access_*() function. To keep this abstract, the structures now have a pointer to the matching journal_access function and a wrapper call to call it. A few places use naked ocfs2_write_block() calls instead of adding the blocks to the journal. We make sure to calculate their checksum and ecc before the write. Since we pass around the journal_access functions. Let's typedef them in ocfs2.h. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Add quota calls for allocation and freeing of inodes and spaceJan Kara2009-01-05
| | | | | | | | | | Add quota calls for allocation and freeing of inodes and space, also update estimates on number of needed credits for a transaction. Move out inode allocation from ocfs2_mknod_locked() because vfs_dq_init() must be called outside of a transaction. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Implementation of local and global quota file handlingJan Kara2009-01-05
| | | | | | | | | | | | | | | | | For each quota type each node has local quota file. In this file it stores changes users have made to disk usage via this node. Once in a while this information is synced to global file (and thus with other nodes) so that limits enforcement at least aproximately works. Global quota files contain all the information about usage and limits. It's mostly handled by the generic VFS code (which implements a trie of structures inside a quota file). We only have to provide functions to convert structures from on-disk format to in-memory one. We also have to provide wrappers for various quota functions starting transactions and acquiring necessary cluster locks before the actual IO is really started. Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Wrap inode block reads in a dedicated function.Joel Becker2009-01-05
| | | | | | | | | | | | | | | | | | | | | | | The ocfs2 code currently reads inodes off disk with a simple ocfs2_read_block() call. Each place that does this has a different set of sanity checks it performs. Some check only the signature. A couple validate the block number (the block read vs di->i_blkno). A couple others check for VALID_FL. Only one place validates i_fs_generation. A couple check nothing. Even when an error is found, they don't all do the same thing. We wrap inode reading into ocfs2_read_inode_block(). This will validate all the above fields, going readonly if they are invalid (they never should be). ocfs2_read_inode_block_full() is provided for the places that want to pass read_block flags. Every caller is passing a struct inode with a valid ip_blkno, so we don't need a separate blkno argument either. We will remove the validation checks from the rest of the code in a later commit, as they are no longer necessary. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: add ocfs2_acl_chmodTiger Yang2009-01-05
| | | | | | | This function is used to update acl xattrs during file mode changes. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: add ocfs2_check_aclTiger Yang2009-01-05
| | | | | | | This function is used to enhance permission checking with POSIX ACLs. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: turn __ocfs2_remove_inode_range() into ocfs2_remove_btree_range()Mark Fasheh2009-01-05
| | | | | | | | | | | | This patch genericizes the high level handling of extent removal. ocfs2_remove_btree_range() is nearly identical to __ocfs2_remove_inode_range(), except that extent tree operations have been used where necessary. We update ocfs2_remove_inode_range() to use the generic helper. Now extent tree based structures have an easy way to truncate ranges. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Acked-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: truncate outstanding block after direct io failureDmitri Monakhov2008-11-10
| | | | | | | | | | Signed-off-by: Dmitri Monakhov <dmonakhov@openvz.org> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: Joel Becker <Joel.Becker@oracle.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Fix check of return value of ocfs2_start_trans()Jan Kara2008-11-10
| | | | | | | | | On failure, ocfs2_start_trans() returns values like ERR_PTR(-ENOMEM). Thus checks for !handle are wrong. Fix them to use IS_ERR(). Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* fs: remove prepare_write/commit_writeNick Piggin2008-10-30
| | | | | | | | | | | Nothing uses prepare_write or commit_write. Remove them from the tree completely. [akpm@linux-foundation.org: schedule simple_prepare_write() for unexporting] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: Simplify ocfs2_read_block()Joel Becker2008-10-14
| | | | | | | | | | More than 30 callers of ocfs2_read_block() pass exactly OCFS2_BH_CACHED. Only six pass a different flag set. Rather than have every caller care, let's make ocfs2_read_block() take no flags and always do a cached read. The remaining six places can call ocfs2_read_blocks() directly. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Require an inode for ocfs2_read_block(s)().Joel Becker2008-10-14
| | | | | | | | | | Now that synchronous readers are using ocfs2_read_blocks_sync(), all callers of ocfs2_read_blocks() are passing an inode. Use it unconditionally. Since it's there, we don't need to pass the ocfs2_super either. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Don't check for NULL before brelse()Mark Fasheh2008-10-13
| | | | | | This is pointless as brelse() already does the check. Signed-off-by: Mark Fasheh
* ocfs2: Switch over to JBD2.Joel Becker2008-10-13
| | | | | | | | | | | | | | | | | | | | | | ocfs2 wants JBD2 for many reasons, not the least of which is that JBD is limiting our maximum filesystem size. It's a pretty trivial change. Most functions are just renamed. The only functional change is moving to Jan's inode-based ordered data mode. It's better, too. Because JBD2 reads and writes JBD journals, this is compatible with any existing filesystem. It can even interact with JBD-based ocfs2 as long as the journal is formated for JBD. We provide a compatibility option so that paranoid people can still use JBD for the time being. This will go away shortly. [ Moved call of ocfs2_begin_ordered_truncate() from ocfs2_delete_inode() to ocfs2_truncate_for_delete(). --Mark ] Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Change ocfs2_get_*_extent_tree() to ocfs2_init_*_extent_tree()Joel Becker2008-10-13
| | | | | | | | | | | | | The original get/put_extent_tree() functions held a reference on et_root_bh. However, every single caller already has a safe reference, making the get/put cycle irrelevant. We change ocfs2_get_*_extent_tree() to ocfs2_init_*_extent_tree(). It no longer gets a reference on et_root_bh. ocfs2_put_extent_tree() is removed. Callers now have a simpler init+use pattern. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Make ocfs2_extent_tree the first-class representation of a tree.Joel Becker2008-10-13
| | | | | | | | | | | | | | | | | | | | | | We now have three different kinds of extent trees in ocfs2: inode data (dinode), extended attributes (xattr_tree), and extended attribute values (xattr_value). There is a nice abstraction for them, ocfs2_extent_tree, but it is hidden in alloc.c. All the calling functions have to pick amongst a varied API and pass in type bits and often extraneous pointers. A better way is to make ocfs2_extent_tree a first-class object. Everyone converts their object to an ocfs2_extent_tree() via the ocfs2_get_*_extent_tree() calls, then uses the ocfs2_extent_tree for all tree calls to alloc.c. This simplifies a lot of callers, making for readability. It also provides an easy way to add additional extent tree types, as they only need to be defined in alloc.c with a ocfs2_get_<new>_extent_tree() function. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Add extended attribute supportTiger Yang2008-10-13
| | | | | | | | | | This patch implements storing extended attributes both in inode or a single external block. We only store EA's in-inode when blocksize > 512 or that inode block has free space for it. When an EA's value is larger than 80 bytes, we will store the value via b-tree outside inode or block. Signed-off-by: Tiger Yang <tiger.yang@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Add extent tree operation for xattr value btreesTao Ma2008-10-13
| | | | | | | | | | | | | | | | | | | | | | Add some thin wrappers around ocfs2_insert_extent() for each of the 3 different btree types, ocfs2_inode_insert_extent(), ocfs2_xattr_value_insert_extent() and ocfs2_xattr_tree_insert_extent(). The last is for the xattr index btree, which will be used in a followup patch. All the old callers in file.c etc will call ocfs2_dinode_insert_extent(), while the other two handle the xattr issue. And the init of extent tree are handled by these functions. When storing xattr value which is too large, we will allocate some clusters for it and here ocfs2_extent_list and ocfs2_extent_rec will also be used. In order to re-use the b-tree operation code, a new parameter named "private" is added into ocfs2_extent_tree and it is used to indicate the root of ocfs2_exent_list. The reason is that we can't deduce the root from the buffer_head now. It may be in an inode, an ocfs2_xattr_block or even worse, in any place in an ocfs2_xattr_bucket. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Make high level btree extend code genericTao Ma2008-10-13
| | | | | | | | | | Factor out the non-inode specifics of ocfs2_do_extend_allocation() into a more generic function, ocfs2_do_cluster_allocation(). ocfs2_do_extend_allocation calls ocfs2_do_cluster_allocation() now, but the latter can be used for other btree types as well. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Abstract ocfs2_extent_tree in b-tree operations.Tao Ma2008-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | In the old extent tree operation, we take the hypothesis that we are using the ocfs2_extent_list in ocfs2_dinode as the tree root. As xattr will also use ocfs2_extent_list to store large value for a xattr entry, we refactor the tree operation so that xattr can use it directly. The refactoring includes 4 steps: 1. Abstract set/get of last_eb_blk and update_clusters since they may be stored in different location for dinode and xattr. 2. Add a new structure named ocfs2_extent_tree to indicate the extent tree the operation will work on. 3. Remove all the use of fe_bh and di, use root_bh and root_el in extent tree instead. So now all the fe_bh is replaced with et->root_bh, el with root_el accordingly. 4. Make ocfs2_lock_allocators generic. Now it is limited to be only used in file extend allocation. But the whole function is useful when we want to store large EAs. Note: This patch doesn't touch ocfs2_commit_truncate() since it is not used for anything other than truncate inode data btrees. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Use ocfs2_extent_list instead of ocfs2_dinode.Tao Ma2008-10-13
| | | | | | | | | | | | ocfs2_extend_meta_needed(), ocfs2_calc_extend_credits() and ocfs2_reserve_new_metadata() are all useful for extent tree operations. But they are all limited to an inode btree because they use a struct ocfs2_dinode parameter. Change their parameter to struct ocfs2_extent_list (the part of an ocfs2_dinode they actually use) so that the xattr btree code can use these functions. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Modify ocfs2_num_free_extents for future xattr usage.Tao Ma2008-10-13
| | | | | | | | | | | ocfs2_num_free_extents() is used to find the number of free extent records in an inode btree. Hence, it takes an "ocfs2_dinode" parameter. We want to use this for extended attribute trees in the future, so genericize the interface the take a buffer head. A future patch will allow that buffer_head to contain any structure rooting an ocfs2 btree. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: POSIX file locks supportMark Fasheh2008-10-13
| | | | | | | | | | | | | | This is actually pretty easy since fs/dlm already handles the bulk of the work. The Ocfs2 userspace cluster stack module already uses fs/dlm as the underlying lock manager, so I only had to add the right calls. Cluster-aware POSIX locks ("plocks") can be turned off by the same means at UNIX locks - mount with 'noflocks', or create a local-only Ocfs2 volume. Internally, the file system uses two sets of file_operations, depending on whether cluster aware plocks is required. This turns out to be easier than implementing local-only versions of ->lock. Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: fiemap supportMark Fasheh2008-10-03
| | | | | | | | | | | | | | Plug ocfs2 into ->fiemap. Some portions of ocfs2_get_clusters() had to be refactored so that the extent cache can be skipped in favor of going directly to the on-disk records. This makes it easier for us to determine which extent is the last one in the btree. Also, I'm not sure we want to be caching fiemap lookups anyway as they're not directly related to data read/write. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu> Cc: ocfs2-devel@oss.oracle.com Cc: linux-fsdevel@vger.kernel.org
* [PATCH] ocfs2: Release mutex in error handling codeJulia Lawall2008-07-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mutex is released on a successful return, so it would seem that it should be released on an error return as well. The semantic patch finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression l; @@ mutex_lock(l); ... when != mutex_unlock(l) when any when strict ( if (...) { ... when != mutex_unlock(l) + mutex_unlock(l); return ...; } | mutex_unlock(l); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* [PATCH] sanitize ->permission() prototypeAl Viro2008-07-26
| | | | | | | | | | | | | | | * kill nameidata * argument; map the 3 bits in ->flags anybody cares about to new MAY_... ones and pass with the mask. * kill redundant gfs2_iop_permission() * sanitize ecryptfs_permission() * fix remaining places where ->permission() instances might barf on new MAY_... found in mask. The obvious next target in that direction is permission(9) folded fix for nfs_permission() breakage from Miklos Szeredi <mszeredi@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* ocfs2: Silence an error message in ocfs2_file_aio_read()Sunil Mushran2008-07-14
| | | | | | | | This patch silences an EINVAL error message in ocfs2_file_aio_read() that is always due to a user error. Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Allow uid/gid/perm changes of symlinksSunil Mushran2008-04-30
| | | | | | | | | 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>
* ocfs2: Convert ocfs2 over to unlocked_ioctlAndi Kleen2008-04-18
| | | | | | | | 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>
* 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>
* [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>
* 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>
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