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path: root/fs/xfs/xfs_mount.c
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* [XFS] Re-initialize the per-cpu superblock counters after recovery.Lachlan McIlroy2007-02-10
| | | | | | | | | | | | | | After filesystem recovery the superblock is re-read to bring in any changes. If the per-cpu superblock counters are not re-initialized from the superblock then the next time the per-cpu counters are disabled they might overwrite the global counter with a bogus value. SGI-PV: 957348 SGI-Modid: xfs-linux-melb:xfs-kern:27999a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
* [XFS] Fix block reservation mechanism.David Chinner2007-02-10
| | | | | | | | | | | | | | | | The block reservation mechanism has been broken since the per-cpu superblock counters were introduced. Make the block reservation code work with the per-cpu counters by syncing the counters, snapshotting the amount of available space and then doing a modifcation of the counter state according to the result. Continue in a loop until we either have no space available or we reserve some space. SGI-PV: 956323 SGI-Modid: xfs-linux-melb:xfs-kern:27895a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
* [XFS] Make growfs work for amounts greater than 2TBDavid Chinner2007-02-10
| | | | | | | | | | | | | | The free block modification code has a 32bit interface, limiting the size the filesystem can be grown even on 64 bit machines. On 32 bit machines, there are other 32bit variables in transaction structures and interfaces that need to be expanded to allow this to work. SGI-PV: 959978 SGI-Modid: xfs-linux-melb:xfs-kern:27894a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com>
* [XFS] Fix UP build breakage due to undefined m_icsb_mutex.David Chinner2007-02-10
| | | | | | | | | SGI-PV: 952227 SGI-Modid: xfs-linux-melb:xfs-kern:27692a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
* [XFS] Reduction global superblock lock contention near ENOSPC.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The existing per-cpu superblock counter code uses the global superblock spin lock when we approach ENOSPC for global synchronisation. On larger machines than this code was originally tested on this can still get catastrophic spinlock contention due increasing rebalance frequency near ENOSPC. By introducing a sleeping lock that is used to serialise balances and modifications near ENOSPC we prevent contention from needlessly from wasting the CPU time of potentially hundreds of CPUs. To reduce the number of balances occuring, we separate the need rebalance case from the slow allocate case. Now, a counter running dry will trigger a rebalance during which counters are disabled. Any thread that sees a disabled counter enters a different path where it waits on the new mutex. When it gets the new mutex, it checks if the counter is disabled. If the counter is disabled, then we _know_ that we have to use the global counter and lock and it is safe to do so immediately. Otherwise, we drop the mutex and go back to trying the per-cpu counters which we know were re-enabled. SGI-PV: 952227 SGI-Modid: xfs-linux-melb:xfs-kern:27612a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
* [XFS] Keep stack usage down for 4k stacks by using noinline.David Chinner2007-02-10
| | | | | | | | | | | | | | | | | | | | gcc-4.1 and more recent aggressively inline static functions which increases XFS stack usage by ~15% in critical paths. Prevent this from occurring by adding noinline to the STATIC definition. Also uninline some functions that are too large to be inlined and were causing problems with CONFIG_FORCED_INLINING=y. Finally, clean up all the different users of inline, __inline and __inline__ and put them under one STATIC_INLINE macro. For debug kernels the STATIC_INLINE macro uninlines those functions. SGI-PV: 957159 SGI-Modid: xfs-linux-melb:xfs-kern:27585a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
* [XFS] Prevent free space oversubscription and xfssyncd looping.David Chinner2006-09-07
| | | | | | | | | | | | | | | | | | | | | | | | | | The fix for recent ENOSPC deadlocks introduced certain limitations on allocations. The fix could cause xfssyncd to loop endlessly if we did not leave some space free for the allocator to work correctly. Basically, we needed to ensure that we had at least 4 blocks free for an AG free list and a block for the inode bmap btree at all times. However, this did not take into account the fact that each AG has a free list that needs 4 blocks. Hence any filesystem with more than one AG could cause oversubscription of free space and make xfssyncd spin forever trying to allocate space needed for AG freelists that was not available in the AG. The following patch reserves space for the free lists in all AGs plus the inode bmap btree which prevents oversubscription. It also prevents those blocks from being reported as free space (as they can never be used) and makes the SMP in-core superblock accounting code and the reserved block ioctl respect this requirement. SGI-PV: 955674 SGI-Modid: xfs-linux-melb:xfs-kern:26894a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: David Chatterton <chatz@sgi.com>
* Merge git://oss.sgi.com:8090/nathans/xfs-2.6Linus Torvalds2006-06-27
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | * git://oss.sgi.com:8090/nathans/xfs-2.6: [XFS] Fixup whitespace damage in log_write, remove final warning. [XFS] Rework code snippets slightly to remove remaining recent-gcc [XFS] Fix realtime subvolume expansion, a porting bug b0rked it. Coverity [XFS] Remove a race condition where a linked inode could BUG_ON in [XFS] Remove redundant directory checks from inode link operation. [XFS] Remove a couple of no-longer-used macros. [XFS] Reduce size of xfs_trans_t structure. * remove ->t_forw, ->t_back -- [XFS] remove unused behaviour lock - shrink XFS vnode as a side effect. [XFS] * There is trivial "inode => vnode => inode" conversion, but only [XFS] link(2) on directory is banned in VFS.
| * [XFS] Rework code snippets slightly to remove remaining recent-gccNathan Scott2006-06-27
| | | | | | | | | | | | | | | | | | warnings. SGI-PV: 904196 SGI-Modid: xfs-linux-melb:xfs-kern:26364a Signed-off-by: Nathan Scott <nathans@sgi.com>
* | [PATCH] cpu hotplug: use hotplug version of cpu notifier in appropriate placesChandra Seetharaman2006-06-27
|/ | | | | | | | | | Make use the of newly defined hotplug version of cpu_notifier functionality wherever appropriate. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Cc: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [XFS] Remove version 1 directory code. Never functioned on Linux, justNathan Scott2006-06-19
| | | | | | | | | pure bloat. SGI-PV: 952969 SGI-Modid: xfs-linux-melb:xfs-kern:26251a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Resolve a namespace collision on vnode/vnodeops for FreeBSD porters.Nathan Scott2006-06-09
| | | | | | | SGI-PV: 953338 SGI-Modid: xfs-linux-melb:xfs-kern:26107a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Resolve a namespace collision on vfs/vfsops for FreeBSD porters.Nathan Scott2006-06-09
| | | | | | | SGI-PV: 9533338 SGI-Modid: xfs-linux-melb:xfs-kern:26106a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Portability changes: remove prdev, stick to one diagnosticNathan Scott2006-06-09
| | | | | | | | | interface. SGI-PV: 953338 SGI-Modid: xfs-linux-melb:xfs-kern:26103a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] In actual allocation of file system blocks and freeing extents, theYingping Lu2006-06-09
| | | | | | | | | | | | | | | | | transaction within each such operation may involve multiple locking of AGF buffer. While the freeing extent function has sorted the extents based on AGF number before entering into transaction, however, when the file system space is very limited, the allocation of space would try every AGF to get space allocated, this could potentially cause out-of-order locking, thus deadlock could happen. This fix mitigates the scarce space for allocation by setting aside a few blocks without reservation, and avoid deadlock by maintaining ascending order of AGF locking. SGI-PV: 947395 SGI-Modid: xfs-linux-melb:xfs-kern:210801a Signed-off-by: Yingping Lu <yingping@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Fix superblock validation regression for the zero imaxpct case. Nathan Scott2006-04-11
| | | | | | | | | Thanks to kjamieson for noticing. SGI-PV: 951661 SGI-Modid: xfs-linux-melb:xfs-kern:25675a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Implement the silent parameter to fill_super, previously ignored.Nathan Scott2006-03-30
| | | | | | | SGI-PV: 951299 SGI-Modid: xfs-linux-melb:xfs-kern:25632a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] We really suck at spulling. Thanks to Chris Pascoe for fixing allNathan Scott2006-03-28
| | | | | | | | | these typos. SGI-PV: 904196 SGI-Modid: xfs-linux-melb:xfs-kern:25539a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Additional mount time superblock validation checks.Nathan Scott2006-03-13
| | | | | | | SGI-PV: 950491 SGI-Modid: xfs-linux-melb:xfs-kern:25354a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] using a spinlock per cpu for superblock counter exclusion results inDavid Chinner2006-03-13
| | | | | | | | | | | | a preēmpt counter overflow at 256p and above. Change the exclusion mechanism to use atomic bit operations and busy wait loops to emulate the spin lock exclusion mechanism but without the preempt count issues. SGI-PV: 950027 SGI-Modid: xfs-linux-melb:xfs-kern:25338a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Add support for hotplug CPUs to the per-CPU superblock counters byDavid Chinner2006-03-13
| | | | | | | | | | | registering a notifier callback that listens to CPU up/down events to modify the counters appropriately. SGI-PV: 949726 SGI-Modid: xfs-linux-melb:xfs-kern:25214a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] On machines with more than 8 cpus, when running parallel I/ODavid Chinner2006-03-13
| | | | | | | | | | | | | threads, the incore superblock lock becomes the limiting factor for buffered write throughput. Make the contended fields in the incore superblock use per-cpu counters so that there is no global lock to limit scalability. SGI-PV: 946630 SGI-Modid: xfs-linux-melb:xfs-kern:25106a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* return statement cleanup - kill pointless parenthesesJesper Juhl2006-01-14
| | | | | | | This patch removes pointless parentheses from return statements. Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [XFS] Fix an intermittent pquota panic caused by dodgey quota flags to anNathan Scott2006-01-10
| | | | | | | | | umount dquot flush call. SGI-PV: 946444 SGI-Modid: xfs-linux-melb:xfs-kern:24680a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Mark some lookup tables const. Thanks to Arjan van de Ven forChristoph Hellwig2006-01-10
| | | | | | | | | | spotting these. SGI-PV: 946028 SGI-Modid: xfs-linux-melb:xfs-kern:202617a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [PATCH] mutex subsystem, semaphore to mutex: XFSJes Sorensen2006-01-09
| | | | | | | | | | This patch switches XFS over to use the new mutex code directly as opposed to the previous workaround patch I posted earlier that avoided the namespace clash by forcing it back to semaphores. This falls in the 'works for me<tm>' category. Signed-off-by: Jes Sorensen <jes@trained-monkey.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* [XFS] Fix calculation of reserved AGs for inodes in 32-bit inode modeEric Sandeen2005-11-01
| | | | | | | | | | Spotted by Roger Willcocks <willcor @at@ gmail.com> SGI-PV: 944858 SGI-Modid: xfs-linux:xfs-kern:201213a Signed-off-by: Eric Sandeen <sandeen@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Rework fid encode/decode wrt 64 bit inums interacting with NFS.Nathan Scott2005-11-01
| | | | | | | SGI-PV: 937127 SGI-Modid: xfs-linux:xfs-kern:24201a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Update license/copyright notices to match the prefered SGINathan Scott2005-11-01
| | | | | | | | | boilerplate. SGI-PV: 913862 SGI-Modid: xfs-linux:xfs-kern:23903a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Remove xfs_macros.c, xfs_macros.h, rework headers a whole lot.Nathan Scott2005-11-01
| | | | | | | SGI-PV: 943122 SGI-Modid: xfs-linux:xfs-kern:23901a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Track external log/realtime device names for correct reporting inNathan Scott2005-11-01
| | | | | | | | | /proc/mounts. SGI-PV: 942984 SGI-Modid: xfs-linux:xfs-kern:23862a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Ondisk format extension for extended attributes (attr2). Basically,Nathan Scott2005-11-01
| | | | | | | | | | | | | | the data/attr forks now grow up/down from either end of the literal area, rather than dividing the literal area into two chunks and growing both upward. Means we can now make much more efficient use of the attribute space, incl. fitting DMF attributes inline in 256 byte inodes, and large jumps in dbench3 performance numbers. It is self enabling, but can be forced on/off via the attr2/noattr2 mount options. SGI-PV: 941645 SGI-Modid: xfs-linux:xfs-kern:23835a Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Add format checking to cmn_err and icmn_errChristoph Hellwig2005-11-01
| | | | | | | | SGI-PV: 942243 SGI-Modid: xfs-linux:xfs-kern:198658a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] remove xfs_incore_relseChristoph Hellwig2005-06-21
| | | | | | | | SGI-PV: 936977 SGI-Modid: xfs-linux:xfs-kern:193409a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] rewrite xfs_iflush_allChristoph Hellwig2005-06-21
| | | | | | | | SGI-PV: 936890 SGI-Modid: xfs-linux:xfs-kern:193349a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] mark various symbols static Patch from Adrian BunkChristoph Hellwig2005-06-21
| | | | | | | | SGI-PV: 936255 SGI-Modid: xfs-linux:xfs-kern:192760a Signed-off-by: Christoph Hellwig <hch@sgi.com> Signed-off-by: Nathan Scott <nathans@sgi.com>
* [XFS] Block mount attempts for filesystems with version 1 directories.Nathan Scott2005-05-05
| | | | | | | SGI Modid: xfs-linux:xfs-kern:21937a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Christoph Hellwig <hch@sgi.com>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
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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