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path: root/fs/ocfs2/aops.c
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2007-06-07ocfs2: Fix invalid assertion during write on 64k pagesMark Fasheh1-10/+10
The write path code intends to bug if a math error (or unhandled case) results in a write outside of the current cluster boundaries. The actual BUG_ON() statements however are incorrect, leading to a crash on kernels with 64k page size. Fix those by checking against the right variables. Also, move the assertions higher up within the functions so that they trip *before* the code starts to mark buffers. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-05-25[PATCH] ocfs2: use zero_user_pageNate Diller1-4/+1
Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-05-25ocfs2: trylock in ocfs2_readpage()Mark Fasheh1-1/+5
Similarly to the page lock / cluster lock inversion in ocfs2_readpage, we can deadlock on ip_alloc_sem. We can down_read_trylock() instead and just return AOP_TRUNCATED_PAGE if the operation fails. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-05-03ocfs2: Force use of GFP_NOFS in ocfs2_write()Mark Fasheh1-1/+1
We can otherwise recurse into the file system. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-05-03ocfs2: fix sparse warnings in fs/ocfs2Mark Fasheh1-1/+2
None of these are actually harmful, but the noise makes looking for real problems difficult. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-05-03[PATCH] fs/ocfs2/: make 3 functions staticAdrian Bunk1-3/+3
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>
2007-04-27ocfs2: Remember rw lock level during direct ioMark Fasheh1-2/+7
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>
2007-04-27ocfs2: Fix up i_blocks calculation to know about holesMark Fasheh1-1/+1
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>
2007-04-27ocfs2: Fix extent lookup to return true size of holesMark Fasheh1-2/+1
Initially, we had wired things to return a size '1' of holes. Cook up a small amount of code to find the next extent and calculate the number of clusters between the virtual offset and the next allocated extent. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-04-27ocfs2: Read from an unwritten extent returns zerosMark Fasheh1-7/+14
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>
2007-04-27ocfs2: Use own splice write actorMark Fasheh1-0/+69
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>
2007-04-27ocfs2: zero tail of sparse files on truncateMark Fasheh1-19/+15
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>
2007-04-27ocfs2: Teach ocfs2_get_block() about holesMark Fasheh1-38/+61
ocfs2_get_block() didn't understand sparse files, fix that. Also remove some code that isn't really useful anymore. We can fix up ocfs2_direct_IO_get_blocks() at the same time. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-04-27ocfs2: remove ocfs2_prepare_write() and ocfs2_commit_write()Mark Fasheh1-120/+5
These are no longer used, and can't handle file systems with sparse file allocation. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2007-04-27ocfs2: teach ocfs2_file_aio_write() about sparse filesMark Fasheh1-16/+663
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>
2007-04-27ocfs2: temporarily remove extent map cachingMark Fasheh1-5/+3
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>
2007-03-15ocfs2: add some missing address space callbacksJoel Becker1-1/+25
Under load, OCFS2 would crash in invalidate_inode_pages2_range() because invalidate_complete_page2() was unable to invalidate a page. It would appear that JBD is holding on to the page. ext3 has a specific ->releasepage() handler to cover this case. Steal ext3's ->releasepage(), ->invalidatepage(), and ->migratepage(), as they appear completely appropriate for OCFS2. Signed-off-by: Joel Becker <joel.becker@oracle.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-29ocfs2: Allow direct I/O read past end of fileMark Fasheh1-7/+17
ocfs2_direct_IO_get_blocks() was incorrectly returning -EIO for a direct I/O read whose start block was past the end of the file allocation tree. Fix things so that we return a hole instead. do_direct_IO() will then notice that the range start is past eof and return a short read. While there, remove the unused vbo_max variable. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-08[PATCH] struct path: convert ocfs2Josef Sipek1-2/+2
Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-02ocfs2: Remove struct ocfs2_journal_handle in favor of handle_tMark Fasheh1-4/+4
This is mostly a search and replace as ocfs2_journal_handle is now no more than a container for a handle_t pointer. ocfs2_commit_trans() becomes very straight forward, and we remove some out of date comments / code. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-02ocfs2: remove handle argument to ocfs2_start_trans()Mark Fasheh1-1/+1
All callers either pass in NULL directly, or a local variable that is already set to NULL. The internals of ocfs2_start_trans() get a nice cleanup as a result. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-02ocfs2: pass ocfs2_super * into ocfs2_commit_trans()Mark Fasheh1-2/+2
This sets us up to remove handle->journal. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-12-02ocfs2: remove unused handle argument from ocfs2_meta_lock_full()Mark Fasheh1-4/+4
Now that this is unused and all callers pass NULL, we can safely remove it. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-09-21ocfs2: properly update i_mtime on buffered writeMark Fasheh1-49/+34
We weren't always updating i_mtime on writes, so fix ocfs2_commit_write() to handle this. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com> Acked-by: Zach Brown <zach.brown@oracle.com>
2006-06-30ocfs2: remove redundant NULL checks in ocfs2_direct_IO_get_blocks()Florin Malita1-8/+1
Signed-off-by: Florin Malita <fmalita@gmail.com> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-06-29[PATCH] mark address_space_operations constChristoph Hellwig1-1/+1
Same as with already do with the file operations: keep them in .rodata and prevents people from doing runtime patching. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Steven French <sfrench@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-05-18ocfs2: take data locks around extendMark Fasheh1-7/+39
We need to take a data lock around extends to protect the pages that ocfs2_zero_extend is going to be pulling into the page cache. Otherwise an extend on one node might populate the page cache with data pages that have no lock coverage. Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-03-26[PATCH] remove ->get_blocks() supportBadari Pulavarty1-1/+1
Now that get_block() can handle mapping multiple disk blocks, no need to have ->get_blocks(). This patch removes fs specific ->get_blocks() added for DIO and makes it users use get_block() instead. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-25ocfs2: don't use MLF* in the file systemMark Fasheh1-8/+10
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
2006-01-03[PATCH] OCFS2: The Second Oracle Cluster FilesystemMark Fasheh1-0/+643
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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