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path: root/fs/xfs/xfs_iomap.c
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2007-05-08[XFS] Fix to prevent the notorious 'NULL files' problem after a crash.Lachlan McIlroy
The problem that has been addressed is that of synchronising updates of the file size with writes that extend a file. Without the fix the update of a file's size, as a result of a write beyond eof, is independent of when the cached data is flushed to disk. Often the file size update would be written to the filesystem log before the data is flushed to disk. When a system crashes between these two events and the filesystem log is replayed on mount the file's size will be set but since the contents never made it to disk the file is full of holes. If some of the cached data was flushed to disk then it may just be a section of the file at the end that has holes. There are existing fixes to help alleviate this problem, particularly in the case where a file has been truncated, that force cached data to be flushed to disk when the file is closed. If the system crashes while the file(s) are still open then this flushing will never occur. The fix that we have implemented is to introduce a second file size, called the in-memory file size, that represents the current file size as viewed by the user. The existing file size, called the on-disk file size, is the one that get's written to the filesystem log and we only update it when it is safe to do so. When we write to a file beyond eof we only update the in- memory file size in the write operation. Later when the I/O operation, that flushes the cached data to disk completes, an I/O completion routine will update the on-disk file size. The on-disk file size will be updated to the maximum offset of the I/O or to the value of the in-memory file size if the I/O includes eof. SGI-PV: 958522 SGI-Modid: xfs-linux-melb:xfs-kern:28322a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-05-08[XFS] The last argument "lsn" of xfs_trans_commit() is always called withEric Sandeen
NULL. Patch provided by Eric Sandeen. SGI-PV: 961693 SGI-Modid: xfs-linux-melb:xfs-kern:28199a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-02-10[XFS] Remove unused header files for MAC and CAP checking functionality.Eric Sandeen
xfs_mac.h and xfs_cap.h provide definitions and macros that aren't used anywhere in XFS at all. They are left-overs from "to be implement at some point in the future" functionality that Irix XFS has. If this functionality ever goes into Linux, it will be provided at a different layer, most likely through the security hooks in the kernel so we will never need this functionality in XFS. Patch provided by Eric Sandeen (sandeen@sandeen.net). SGI-PV: 960895 SGI-Modid: xfs-linux-melb:xfs-kern:28036a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-02-10[XFS] Remove unused argument to xfs_bmap_finishEric Sandeen
The firstblock argument to xfs_bmap_finish is not used by that function. Remove it and cleanup the code a bit. Patch provided by Eric Sandeen. SGI-PV: 960196 SGI-Modid: xfs-linux-melb:xfs-kern:28034a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Improve error handling for the zero-fsblock extent detection code.Nathan Scott
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26802a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-06-20[XFS] Remove version 1 directory code. Never functioned on Linux, justNathan Scott
pure bloat. SGI-PV: 952969 SGI-Modid: xfs-linux-melb:xfs-kern:26251a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-06-09[XFS] Add parameters to xfs_bmapi() and xfs_bunmapi() to have them reportOlaf Weber
the range spanned by modifications to the in-core extent map. Add XFS_BUNMAPI() and XFS_SWAP_EXTENTS() macros that call xfs_bunmapi() and xfs_swap_extents() via the ioops vector. Change all calls that may modify the in-core extent map for the data fork to go through the ioops vector. This allows a cache of extent map data to be kept in sync. SGI-PV: 947615 SGI-Modid: xfs-linux-melb:xfs-kern:209226a Signed-off-by: Olaf Weber <olaf@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-03-22[XFS] Fixing KDB's xrwtrc command, also added the current process id intoYingping Lu
the trace. SGI-PV: 948300 SGI-Modid: xfs-linux-melb:xfs-kern:208069a Signed-off-by: Yingping Lu <yingping@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-12Merge HEAD from oss.sgi.com:/oss/git/linux-2.6.git Nathan Scott
2006-01-11[XFS] Fix compiler warnings from older gcc versions wrt printfalikeNathan Scott
arguments. SGI-PV: 907752 SGI-Modid: xfs-linux-melb:xfs-kern:24901a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11[XFS] Sort out cosmetic differences between user and kernel copies of someNathan Scott
sources. SGI-PV: 907752 SGI-Modid: xfs-linux-melb:xfs-kern:24659a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11[XFS] Implement the di_extsize allocator hint for non-realtime files asNathan Scott
well. Also provides a mechanism for inheriting this property from the parent directory for new files. SGI-PV: 945264 SGI-Modid: xfs-linux-melb:xfs-kern:24367a Signed-off-by: Nathan Scott <nathans@sgi.com>
2006-01-11xfs: header included twiceNicolas Kaiser
Header included twice. Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2005-11-02[XFS] remove unused code from xfs_iomap_write_directEric Sandeen
SGI-PV: 943266 SGI-Modid: xfs-linux:xfs-kern:200996a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Remove dead code in xfs_iomap_write_direct; save some stackEric Sandeen
SGI-PV: 943266 SGI-Modid: xfs-linux:xfs-kern:199750a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Update license/copyright notices to match the prefered SGINathan Scott
boilerplate. SGI-PV: 913862 SGI-Modid: xfs-linux:xfs-kern:23903a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-11-02[XFS] Remove xfs_macros.c, xfs_macros.h, rework headers a whole lot.Nathan Scott
SGI-PV: 943122 SGI-Modid: xfs-linux:xfs-kern:23901a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-09-05[XFS] Fix incorrect use of BMAPI_READ in unwritten extent handlingNathan Scott
(luckily just cosmetic). SGI-PV: 942232 SGI-Modid: xfs-linux-melb:xfs-kern:23718a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-09-02[XFS] Fix regression in transaction reserved-block accounting for directNathan Scott
writes. SGI-PV: 938145 SGI-Modid: xfs-linux:xfs-kern:23088a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-06-21[XFS] Merge fixes into realtime quota code, since one/two reported, stillNathan Scott
not enabled though. SGI-PV: 938145 SGI-Modid: xfs-linux:xfs-kern:22900a Signed-off-by: Nathan Scott <nathans@sgi.com>
2005-05-06[XFS] Fix a bug in xfs_iomap for extent handling of write casesRussell Cattelan
This may be the cause of several open PV's of incorrect delay flags being set and then tripping asserts. Do not return a delay alloc extent when the caller is asking to do a write. SGI Modid: xfs-linux:xfs-kern:189616a Signed-off-by: Russell Cattelan <cattelan@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Cleanup use of loff_t vs xfs_off_t in the core code.Nathan Scott
SGI Modid: xfs-linux:xfs-kern:22378a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
2005-05-05[XFS] Use the right offset when ensuring a delayed allocate conversion has ↵Nathan Scott
covered the offset originally requested. Can cause data corruption when multiple processes are performing writeout on different areas of the same file. Quite difficult to hit though. SGI Modid: xfs-linux:xfs-kern:22377a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com> .
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
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