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* 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>
* 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: 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: 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: convert to new aopsNick Piggin2007-10-16
| | | | | | | | | | | Plug ocfs2 into the ->write_begin and ->write_end aops. A bunch of custom code is now gone - the iovec iteration stuff during write and the ocfs2 splice write actor. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: Write support for inline dataMark Fasheh2007-10-12
| | | | | | | | | | | | | | | | | | This fixes up write, truncate, mmap, and RESVSP/UNRESVP to understand inline inode data. For the most part, the changes to the core write code can be relied on to do the heavy lifting. Any code calling ocfs2_write_begin (including shared writeable mmap) can count on it doing the right thing with respect to growing inline data to an extent tree. Size reducing truncates, including UNRESVP can simply zero that portion of the inode block being removed. Size increasing truncatesm, including RESVP have to be a little bit smarter and grow the inode to an extent tree if necessary. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: move nonsparse hole-filling into ocfs2_write_begin()Mark Fasheh2007-10-12
| | | | | | | | | By doing this, we can remove any higher level logic which has to have knowledge of btree functionality - any callers of ocfs2_write_begin() can now expect it to do anything necessary to prepare the inode for new data. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Reviewed-by: Joel Becker <joel.becker@oracle.com>
* ocfs2: Allow smaller allocations during large writesMark Fasheh2007-09-20
| | | | | | | | | | | | | | | | | | | | | | | | The ocfs2 write code loops through a page much like the block code, except that ocfs2 allocation units can be any size, including larger than page size. Typically it's equal to or larger than page size - most kernels run 4k pages, the minimum ocfs2 allocation (cluster) size. Some changes introduced during 2.6.23 changed the way writes to pages are handled, and inadvertantly broke support for > 4k page size. Instead of just writing one cluster at a time, we now handle the whole page in one pass. This means that multiple (small) seperate allocations might happen in the same pass. The allocation code howver typically optimizes by getting the maximum which was reserved. This triggered a BUG_ON in the extend code where it'd ask for a single bit (for one part of a > 4k page) and get back more than it asked for. Fix this by providing a variant of the high level allocation function which allows the caller to specify a maximum. The traditional function remains and just calls the new one with a maximum determined from the initial reservation. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Fix calculation of i_blocks during truncateMark Fasheh2007-09-11
| | | | | | | We were setting i_blocks too early - before truncating any allocation. Correct things to set i_blocks after the allocation change. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: check ia_size limits in setattrMark Fasheh2007-08-09
| | | | | | | We have to manually check the requested truncate size as the check in vmtruncate() comes too late for Ocfs2. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Fix some casting errors related to file writesMark Fasheh2007-08-09
| | | | | | | | ocfs2_align_clusters_to_page_index() needs to cast the clusters shift to pgoff_t and ocfs2_file_buffered_write() needs loff_t when calculating destination start for memcpy. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: use s_maxbytes directly in ocfs2_change_file_space()Mark Fasheh2007-08-09
| | | | | | | | There's no need to recalculate things via ocfs2_max_file_offset() as we've already done that to fill s_maxbytes, so use that instead. We can also un-export ocfs2_max_file_offset() then. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Restrict inode changes in ocfs2_update_inode_atime()Mark Fasheh2007-08-09
| | | | | | | | | | | ocfs2_update_inode_atime() calls ocfs2_mark_inode_dirty() to push changes from the struct inode into the ocfs2 disk inode. The problem is, ocfs2_mark_inode_dirty() might change other fields, depending on what happened to the struct inode. Since we don't always have locking to serialize changes to other fields (like i_size, etc), just fix things up to only touch the atime field. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: bad kunmap_atomic()Jens Axboe2007-07-24
| | | | | | | | | kunmap_atomic() takes the virtual address, not the mapped page as argument. Signed-off-by: Jens Axboe <jens.axboe@oracle.com> Cc: Mark Fasheh <mark.fasheh@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: ->fallocate() supportMark Fasheh2007-07-19
| | | | | | | Plug ocfs2 into the ->fallocate() callback. This just re-uses the existing preallocation code. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* arch/i386/* fs/* ipc/*: mark variables with uninitialized_var()Jeff Garzik2007-07-17
| | | | | | | | Mark variables with uninitialized_var() if such a warning appears, and analysis proves that the var is initialized properly on all paths it is used. Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ocfs2: Support xfs style space reservation ioctlsMark Fasheh2007-07-10
| | | | | | | | | | | | | | | We re-use the RESVSP/UNRESVSP ioctls from xfs which allow the user to allocate and deallocate regions to a file without zeroing data or changing i_size. Though renamed, the structure passed in from user is identical to struct xfs_flock64. The three fields that are actually used right now are l_whence, l_start and l_len. This should get ocfs2 immediate compatibility with userspace software using the pre-existing xfs ioctls. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: support for removing file regionsMark Fasheh2007-07-10
| | | | | | | | | | Provide an internal interface for the removal of arbitrary file regions. ocfs2_remove_inode_range() takes a byte range within a file and will remove existing extents within that range. Partial clusters will be zeroed so that any read from within the region will return zeros. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: update truncate handling of partial clustersMark Fasheh2007-07-10
| | | | | | | | | The partial cluster zeroing code used during truncate usually assumes that the rightmost byte in the range to be zeroed lies on a cluster boundary. This makes sense for truncate, but punching holes might require zeroing on non-aligned rightmost boundaries. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Support creation of unwritten extentsMark Fasheh2007-07-10
| | | | | | | | | | This can now be trivially supported with re-use of our existing extend code. ocfs2_allocate_unwritten_extents() takes a start offset and a byte length and iterates over the inode, adding extents (marked as unwritten) until len is reached. Existing extents are skipped over. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: support writing of unwritten extentsMark Fasheh2007-07-10
| | | | | | | | | | Update the write code to detect when the user is asking to write to an unwritten extent. Like writing to a hole, we must zero the region between the write and the cluster boundaries. Most of the existing cluster zeroing logic can be re-used with some additional checks for the unwritten flag on extent records. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: shared writeable mmapMark Fasheh2007-07-10
| | | | | | | Implement cluster consistent shared writeable mappings using the ->page_mkwrite() callback. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: rework ocfs2_buffered_write_cluster()Mark Fasheh2007-07-10
| | | | | | | | | | | Use some ideas from the new-aops patch series and turn ocfs2_buffered_write_cluster() into a 2 stage operation with the caller copying data in between. The code now understands multiple cluster writes as a result of having to deal with a full page write for greater than 4k pages. This sets us up to easily call into the write path during ->page_mkwrite(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: take ip_alloc_sem during entire truncateMark Fasheh2007-07-10
| | | | | | | Use of the alloc sem during truncate was too narrow - we want to protect the i_size change and page truncation against mmap now. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* pipe: change the ->pin() operation to ->confirm()Jens Axboe2007-07-10
| | | | | | | | | | | | The name 'pin' was badly chosen, it doesn't pin a pipe buffer in the most commonly used sense in the kernel. So change the name to 'confirm', after debating this issue with Hugh Dickins a bit. A good return from ->confirm() means that the buffer is really there, and that the contents are good. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* splice: divorce the splice structure/function definitions from the pipe headerJens Axboe2007-07-10
| | | | | | | | | We need to move even more stuff into the header so that folks can use the splice_to_pipe() implementation instead of open-coding a lot of pipe knowledge (see relay implementation), so move to our own header file finally. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* sendfile: remove .sendfile from filesystems that use generic_file_sendfile()Jens Axboe2007-07-10
| | | | | | | They can use generic_file_splice_read() instead. Since sys_sendfile() now prefers that, there should be no change in behaviour. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* vmsplice: add vmsplice-to-user supportJens Axboe2007-07-10
| | | | | | | | A bit of a cheat, it actually just copies the data to userspace. But this makes the interface nice and symmetric and enables people to build on splice, with room for future improvement in performance. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* splice: abstract out actor dataJens Axboe2007-07-10
| | | | | | | | | | | | For direct splicing (or private splicing), the output may not be a file. So abstract out the handling into a specified actor function and put the data in the splice_desc structure earlier, so we can build on top of that. This is the first step in better splice handling for drivers, and also for implementing vmsplice _to_ user memory. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [PATCH] ocfs2: use generic_segment_checksChristoph Hellwig2007-05-25
| | | | | Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: unmap_mapping_range() in ocfs2_truncate()Mark Fasheh2007-05-25
| | | | | | | We weren't calling this before, but since ocfs2 handles the entire truncate operation, we should. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: fix sparse warnings in fs/ocfs2Mark Fasheh2007-05-02
| | | | | | | None of these are actually harmful, but the noise makes looking for real problems difficult. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [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: Implement compat_ioctl()Mark Fasheh2007-05-02
| | | | | | We need this to support 32 bit system calls on 64 bit kernels. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Remember rw lock level during direct ioMark Fasheh2007-04-26
| | | | | | | Cluster locking might have been redone because a direct write won't complete, so this needs to be reflected in the iocb. 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: Read from an unwritten extent returns zerosMark Fasheh2007-04-26
| | | | | | | | Return an optional extent flags field from our lookup functions and wire up callers to treat unwritten regions as holes for the purpose of returning zeros to the user. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: make room for unwritten extents flagMark Fasheh2007-04-26
| | | | | | | | | | Due to the size of our group bitmaps, we'll never have a leaf node extent record with more than 16 bits worth of clusters. Split e_clusters up so that leaf nodes can get a flags field where we can mark unwritten extents. Interior nodes whose length references all the child nodes beneath it can't split their e_clusters field, so we use a union to preserve sizing there. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: Use own splice write actorMark Fasheh2007-04-26
| | | | | | | | We need to fill holes during a splice write. Provide our own splice write actor which can call ocfs2_file_buffered_write() with a splice-specific callback. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: zero tail of sparse files on truncateMark Fasheh2007-04-26
| | | | | | | | | | Since we don't zero on extend anymore, truncate needs to be fixed up to zero the part of a file between i_size and and end of it's cluster. Otherwise a subsequent extend could expose bad data. This introduced a new helper, which can be used in ocfs2_write(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: teach ocfs2_file_aio_write() about sparse filesMark Fasheh2007-04-26
| | | | | | | | | | | | Unfortunately, ocfs2 can no longer make use of generic_file_aio_write_nlock() because allocating writes will require zeroing of pages adjacent to the I/O for cluster sizes greater than page size. Implement a custom file write here, which can order page locks for zeroing. This also has the advantage that cluster locks can easily be ordered outside of the page locks. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: abstract out allocation lockingMark Fasheh2007-04-26
| | | | | | | | | | | | | | | | | Right now, file allocation for ocfs2 is done within ocfs2_extend_file(), which is either called from ->setattr() (for an i_size change), or at the top of ocfs2_file_aio_write(). Inodes on file systems with sparse file support will want to do their allocation during the actual write call. In either case the cluster locking decisions are the same. We abstract out that code into a new function, ocfs2_lock_allocators() which will be used by a later patch to enable writing to sparse files. This also provides a nice cleanup of ocfs2_extend_allocation(). Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: teach extend/truncate about sparse filesMark Fasheh2007-04-26
| | | | | | | | | | | | | | | | | For ocfs2_truncate_file(), we eliminate the "simple" truncate case which no longer exists since i_size is not tied to i_clusters. In ocfs2_extend_file(), we skip the allocation / page zeroing code for file systems which understand sparse files. The core truncate code is changed to do a bottom up tree traversal. This gets abstracted out into it's own function. To make things more readable, most of the special case handling for in-inode extents from ocfs2_do_truncate() is also removed. Though write support for sparse files comes in a later patch, we at least update ocfs2_prepare_inode_for_write() to skip allocation for sparse files. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: sparse b-tree supportMark Fasheh2007-04-26
| | | | | | | | | | | | Introduce tree rotations into the b-tree code. This will allow ocfs2 to support sparse files. Much of the added code is designed to be generic (in the ocfs2 sense) so that it can later be re-used to implement large extended attributes. This patch only adds the rotation code and does minimal updates to callers of the extent api. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* ocfs2: filter more error printsMark Fasheh2007-04-26
| | | | | | | | | | | We don't want to print anything at all in ocfs2_lookup() when getting an error from ocfs2_iget() - it could be something as innocuous as a signal being detected in the dlm. ocfs2_permission() should filter on -ENOENT which ocfs2_meta_lock() can return if the inode was deleted on another node. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
* [PATCH] mark struct inode_operations const 2Arjan van de Ven2007-02-12
| | | | | | | | | | | Many struct inode_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ocfs2: ignore NULL vfsmnt in ocfs2_should_update_atime()Mark Fasheh2006-12-28
| | | | | | This can come from NFSD. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
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