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* ocfs2: Pass ocfs2_caching_info into ocfs_init_*_extent_tree().Joel Becker2009-09-041-6/+9
| | | | | | | 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_insert_extent() no longer needs struct inode.Joel Becker2009-09-041-7/+5
| | | | | | One more function down, no inode in the entire insert-extent chain. Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: ocfs2_find_path() only needs the caching infoJoel Becker2009-09-041-1/+2
| | | | | | | | ocfs2_find_path and ocfs2_find_leaf() walk our btrees, reading extent blocks. They need struct ocfs2_caching_info for that, but not struct inode. Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Pass ocfs2_caching_info to ocfs2_read_extent_block().Joel Becker2009-09-041-1/+1
| | | | | | | | | extent blocks belong to btrees on more than just inodes, so we want to pass the ocfs2_caching_info structure directly to ocfs2_read_extent_block(). A number of places in alloc.c can now drop struct inode from their argument list. Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Pass struct ocfs2_caching_info to the journal functions.Joel Becker2009-09-041-23/+29
| | | | | | | | | | | | | 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: Take the inode out of the metadata read/write paths.Joel Becker2009-09-041-10/+13
| | | | | | | | | We are really passing the inode into the ocfs2_read/write_blocks() functions to get at the metadata cache. This commit passes the cache directly into the metadata block functions, divorcing them from the inode. Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Correct ordering of ip_alloc_sem and localloc locks for directoriesJan Kara2009-06-031-11/+10
| | | | | | | | | | We use ordering ip_alloc_sem -> local alloc locks in ocfs2_write_begin(). So change lock ordering in ocfs2_extend_dir() and ocfs2_expand_inline_dir() to also use this lock ordering. Signed-off-by: Jan Kara <jack@suse.cz> Acked-by: Mark Fasheh <mfasheh@suse.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Fix 2 warning during ocfs2 make.Tao Ma2009-04-211-1/+1
| | | | | | | | | | | fs/ocfs2/dir.c: In function ‘ocfs2_extend_dir’: fs/ocfs2/dir.c:2700: warning: ‘ret’ may be used uninitialized in this function fs/ocfs2/suballoc.c: In function ‘ocfs2_get_suballoc_slot_bit’: fs/ocfs2/suballoc.c:2216: warning: comparison is always true due to limited range of data type Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Reserve 1 more cluster in expanding_inline_dir for indexed dir.Tao Ma2009-04-071-1/+1
| | | | | | | | | In ocfs2_expand_inline_dir, we calculate whether we need 1 extra cluster if we can't store the dx inline the root and save it in dx_alloc. So add it when we call ocfs2_reserve_clusters. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: fix leaf start calculation in ocfs2_dx_dir_rebalance()Mark Fasheh2009-04-031-2/+1
| | | | | | | | | | | | ocfs2_dx_dir_rebalance() is passed the block offset of a dx leaf which needs rebalancing. Since we rebalance an entire cluster at a time however, this function needs to calculate the beginning of that cluster, in blocks. The calculation was wrong, which would result in a read of non-leaf blocks. Fix the calculation by adding ocfs2_block_to_cluster_start() which is a more straight-forward way of determining this. Reported-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Add total entry count to dx_root_blockMark Fasheh2009-04-031-43/+119
| | | | | | | This little bit of extra accounting speeds up ocfs2_empty_dir() dramatically by allowing us to short-circuit the full directory scan. Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Introduce dir free space listMark Fasheh2009-04-031-86/+472
| | | | | | | | | | | The only operation which doesn't get faster with directory indexing is insert, which still has to walk the entire unindexed directory portion to find a free block. This patch provides an improvement in directory insert performance by maintaining a singly linked list of directory leaf blocks which have space for additional dirents. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Acked-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Store dir index records inlineMark Fasheh2009-04-031-138/+434
| | | | | | | | | | | Allow us to store a small number of directory index records in the ocfs2_dx_root_block. This saves us a disk read on small to medium sized directories (less than about 250 entries). The inline root is automatically turned into a root block with extents if the directory size increases beyond it's capacity. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Acked-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Add a name indexed b-tree to directory inodesMark Fasheh2009-04-031-63/+1845
| | | | | | | | | | | | | | | | This patch makes use of Ocfs2's flexible btree code to add an additional tree to directory inodes. The new tree stores an array of small, fixed-length records in each leaf block. Each record stores a hash value, and pointer to a block in the traditional (unindexed) directory tree where a dirent with the given name hash resides. Lookup exclusively uses this tree to find dirents, thus providing us with constant time name lookups. Some of the hashing code was copied from ext3. Unfortunately, it has lots of unfixed checkpatch errors. I left that as-is so that tracking changes would be easier. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Acked-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Introduce dir lookup helper structMark Fasheh2009-04-031-45/+54
| | | | | | | | | | | Many directory manipulation calls pass around a tuple of dirent, and it's containing buffer_head. Dir indexing has a bit more state, but instead of adding yet more arguments to functions, we introduce 'struct ocfs2_dir_lookup_result'. In this patch, it simply holds the same tuple, but future patches will add more state. Signed-off-by: Mark Fasheh <mfasheh@suse.com> Acked-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Checksum and ECC for directory blocks.Joel Becker2009-01-051-2/+35
| | | | | | | | Use the db_check field of ocfs2_dir_block_trailer to crc/ecc the dirblocks. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Add directory block trailers.Mark Fasheh2009-01-051-14/+183
| | | | | | | | | | | | | | | | Future ocfs2 features metaecc and indexed directories need to store a little bit of data in each dirblock. For compatibility, we place this in a trailer at the end of the dirblock. The trailer plays itself as an empty dirent, so that if the features are turned off, it can be reused without requiring a tunefs scan. This code adds the trailer and validates it when the block is read in. [ Mark is the original author, but I reinserted this code before his dir index work. -- Joel ] Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Use metadata-specific ocfs2_journal_access_*() functions.Joel Becker2009-01-051-17/+31
| | | | | | | | | | | | | | | | | | | | | | | | 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 Kara2009-01-051-2/+22
| | | | | | | | | | 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: Convert ocfs2_read_dir_block() to ocfs2_read_virt_blocks()Joel Becker2009-01-051-33/+5
| | | | | | | | Now that we've centralized the ocfs2_read_virt_blocks() code, let's use it in ocfs2_read_dir_block(). Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Validate metadata only when it's read from disk.Joel Becker2009-01-051-9/+4
| | | | | | | | | | | | | | | | | | | | Add an optional validation hook to ocfs2_read_blocks(). Now the validation function is only called when a block was actually read off of disk. It is not called when the buffer was in cache. We add a buffer state bit BH_NeedsValidate to flag these buffers. It must always be one higher than the last JBD2 buffer state bit. The dinode, dirblock, extent_block, and xattr_block validators are lifted to this scheme directly. The group_descriptor validator needs to be split into two pieces. The first part only needs the gd buffer and is passed to ocfs2_read_block(). The second part requires the dinode as well, and is called every time. It's only 3 compares, so it's tiny. This also allows us to clean up the non-fatal gd check used by resize.c. It now has no magic argument. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Wrap dirblock reads in a dedicated function.Joel Becker2009-01-051-62/+88
| | | | | | | | | | We have ocfs2_bread() as a vestige of the original ext-based dir code. It's only used by directories, though. Turn it into ocfs2_read_dir_block(), with a prototype matching the other metadata read functions. It's set up to validate dirblocks when the time comes. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Wrap inode block reads in a dedicated function.Joel Becker2009-01-051-3/+3
| | | | | | | | | | | | | | | | | | | | | | | 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: Make cached block reads the common case.Joel Becker2008-10-141-1/+1
| | | | | | | | | | | ocfs2_read_blocks() currently requires the CACHED flag for cached I/O. However, that's the common case. Let's flip it around and provide an IGNORE_CACHE flag for the special users. This has the added benefit of cleaning up the code some (ignore_cache takes on its special meaning earlier in the loop). Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Kill the last naked wait_on_buffer() for cached reads.Joel Becker2008-10-141-4/+3
| | | | | | | | | ocfs2's cached buffer I/O goes through ocfs2_read_block(s)(). dir.c had a naked wait_on_buffer() to wait for some readahead, but it should use ocfs2_read_block() instead. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Move ocfs2_bread() into dir.cJoel Becker2008-10-141-0/+43
| | | | | | | | dir.c is the only place using ocfs2_bread(), so let's make it static to that file. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Simplify ocfs2_read_block()Joel Becker2008-10-141-6/+3
| | | | | | | | | | 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 Becker2008-10-141-6/+6
| | | | | | | | | | 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 Fasheh2008-10-131-16/+8
| | | | | | This is pointless as brelse() already does the check. Signed-off-by: Mark Fasheh
* ocfs2: Change ocfs2_get_*_extent_tree() to ocfs2_init_*_extent_tree()Joel Becker2008-10-131-4/+2
| | | | | | | | | | | | | 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 Becker2008-10-131-8/+12
| | | | | | | | | | | | | | | | | | | | | | 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 extent tree operation for xattr value btreesTao Ma2008-10-131-5/+6
| | | | | | | | | | | | | | | | | | | | | | 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 Ma2008-10-131-3/+3
| | | | | | | | | | 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 Ma2008-10-131-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | 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 Ma2008-10-131-2/+3
| | | | | | | | | | | | 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 Ma2008-10-131-1/+2
| | | | | | | | | | | 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: correctly set i_blocks after inline dir gets expandedMark Fasheh2008-08-221-1/+6
| | | | | | | | | | | | | We were setting i_blocks based on allocation before the extent insert, which is wrong as the value is a calculation based on ip_clusters which gets updated as a result of the insert. This patch moves the line in question to just after the call to ocfs2_insert_extent(). Without this fix, inline directories were temporarily having an i_blocks value of zero immediately after expansion to extents. Reported-and-tested-by: Tristan Ye <tristan.ye@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* ocfs2: Jump to correct label in ocfs2_expand_inline_dir()Tao Ma2008-08-221-2/+2
| | | | | | | | When we fail to insert extent in ocfs2_expand_inline_dir(), we should go to out_commit, not out. Signed-off-by: Tao Ma <tao.ma@oracle.com> Signed-off-by: Mark Fasheh <mfasheh@suse.com>
* [PATCH] ocfs2: le*_add_cpu conversionMarcin Slusarz2008-03-031-3/+2
| | | | | | | | | | | | replace all: little_endian_variable = cpu_to_leX(leX_to_cpu(little_endian_variable) + expression_in_cpu_byteorder); with: leX_add_cpu(&little_endian_variable, expression_in_cpu_byteorder); generated with semantic patch Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* fs/: Spelling fixesJoe Perches2008-02-031-1/+1
| | | | | Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* ocfs2: Rename ocfs2_meta_[un]lockMark Fasheh2008-01-251-4/+4
| | | | | | | 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>
* [2.6 patch] make ocfs2_find_entry_el() staticAdrian Bunk2007-11-061-3/+3
| | | | | | | ocfs2_find_entry_el() can become static. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* Fix f_version type: should be u64 instead of unsigned longMathieu Desnoyers2007-10-171-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix f_version type: should be u64 instead of long There is a type inconsistency between struct inode i_version and struct file f_version. fs.h: struct inode u64 i_version; and struct file unsigned long f_version; Users do: fs/ext3/dir.c: if (filp->f_version != inode->i_version) { So why isn't f_version a u64 ? It becomes a problem if versions gets higher than 2^32 and we are on an architecture where longs are 32 bits. This patch changes the f_version type to u64, and updates the users accordingly. It applies to 2.6.23-rc2-mm2. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Martin Bligh <mbligh@google.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: <linux-ext4@vger.kernel.org> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: "J. Bruce Fields" <bfields@fieldses.org> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: Optionally return filldir errorsMark Fasheh2007-10-121-11/+22
| | | | | | | | | | Modify ocfs2_dir_foreach_blk() to optionally return any error from the filldir callback. This way ocfs2_dirforeach() can terminate early, as opposed to always passing through the entire directory. This fixes a bug introduced during a previous code refactor where ocfs2_empty_dir() would loop infinitely. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Write support for directories with inline dataMark Fasheh2007-10-121-77/+541
| | | | | | | | | | | | | Create all new directories with OCFS2_INLINE_DATA_FL and the inline data bytes formatted as an empty directory. Inode size field reflects the actual amount of inline data available, which makes searching for dirent space very similar to the regular directory search. Inline-data directories are automatically pushed out to extents on any insert request which is too large for the available space. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Read support for directories with inline dataMark Fasheh2007-10-121-8/+168
| | | | | | | | | | | This splits out extent based directory read support and implements inline-data versions of those functions. All knowledge of inline-data versus extent based directories is internalized. For lookups the code uses ocfs2_find_entry_id(), full dir iterations make use of ocfs2_dir_foreach_blk_id(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Cleanup dirent size checkMark Fasheh2007-10-121-8/+28
| | | | | | | | | The check to see if a new dirent would fit in an old one is pretty ugly, and it's done at least twice. Clean things up by putting this in it's own easier-to-read function. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Rename cleanupsMark Fasheh2007-10-121-0/+22
| | | | | | | | | | ocfs2_rename() does direct manipulation of the dirent it's gotten back from a directory search. Wrap this manipulation inside of a function so that we can transparently change directory update behavior in the future. As an added bonus, this gets rid of an ugly macro. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Provide convenience function for ino lookupMark Fasheh2007-10-121-0/+17
| | | | | | | | | | | A couple paths which needed to just match a parent dir + name pair to an inode number were a bit messy because they had to deal with ocfs2_find_files_on_disk() which returns a larger number of values. Provide a convenience function, ocfs2_lookup_ino_from_name() which internalizes all the extra accounting. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Implement ocfs2_empty_dir() as a caller of ocfs2_dir_foreach()Mark Fasheh2007-10-121-51/+45
| | | | | | | | | | We can preserve the behavior of ocfs2_empty_dir(), while getting rid of the open coded directory walk by just providing a smart filldir callback. This also automatically gets to use the dir readahead code, though in this case any advantage is minor at best. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
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