summaryrefslogtreecommitdiff
path: root/fs/xfs/xfs_mru_cache.c
AgeCommit message (Collapse)AuthorFilesLines
2010-01-16xfs: Kill filestreams cache flushDave Chinner1-1/+1
The filestreams cache flush is not needed in the sync code as it does not affect data writeback, and it is now not used by the growfs code, either, so kill it. Signed-off-by: Dave Chinner <david@fromorbit.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Alex Elder <aelder@sgi.com>
2009-08-31xfs: add more statics & drop some unused functionsEric Sandeen1-29/+0
A lot more functions could be made static, but they need forward declarations; this does some easy ones, and also found a few unused functions in the process. Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Felix Blyakher <felixb@sgi.com>
2008-07-28[XFS] streamline init/exit pathChristoph Hellwig1-5/+8
Currently the xfs module init/exit code is a mess. It's farmed out over a lot of function with very little error checking. This patch makes sure we propagate all initialization failures properly and clean up after them. Various runtime initializations are replaced with compile-time initializations where possible to make this easier. The exit path is similarly consolidated. There's now split out function to create/destroy the kmem zones and alloc/free the trace buffers. I've also changed the ktrace allocations to KM_MAYFAIL and handled errors resulting from that. And yes, we really should replace the XFS_*_TRACE ifdefs with a single XFS_TRACE.. SGI-PV: 976035 SGI-Modid: xfs-linux-melb:xfs-kern:31354a Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Niv Sardi <xaiki@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-07-28[XFS] Remove unused arg from kmem_free()Denys Vlasenko1-4/+4
kmem_free() function takes (ptr, size) arguments but doesn't actually use second one. This patch removes size argument from all callsites. SGI-PV: 981498 SGI-Modid: xfs-linux-melb:xfs-kern:31050a Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07[XFS] Fix up sparse warnings.David Chinner1-4/+14
These are mostly locking annotations, marking things static, casts where needed and declaring stuff in header files. SGI-PV: 971186 SGI-Modid: xfs-linux-melb:xfs-kern:30002a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
2008-02-07[XFS] Remove spin.hEric Sandeen1-1/+1
remove spinlock init abstraction macro in spin.h, remove the callers, and remove the file. Move no-op spinlock_destroy to xfs_linux.h Cleanup spinlock locals in xfs_mount.c SGI-PV: 970382 SGI-Modid: xfs-linux-melb:xfs-kern:29751a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2008-02-07[XFS] Unwrap mru_lock.Eric Sandeen1-17/+17
Un-obfuscate mru_lock, remove mutex_lock->spin_lock macros, call spin_lock directly, remove extraneous cookie holdover from old xfs code. SGI-PV: 970382 SGI-Modid: xfs-linux-melb:xfs-kern:29745a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-09-17[XFS] On-demand reaping of the MRU cacheDavid Chinner1-44/+28
Instead of running the mru cache reaper all the time based on a timeout, we should only run it when the cache has active objects. This allows CPUs to sleep when there is no activity rather than be woken repeatedly just to check if there is anything to do. SGI-PV: 968554 SGI-Modid: xfs-linux-melb:xfs-kern:29305a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-07-14[XFS] Concurrent Multi-File Data StreamsDavid Chinner1-0/+608
In media spaces, video is often stored in a frame-per-file format. When dealing with uncompressed realtime HD video streams in this format, it is crucial that files do not get fragmented and that multiple files a placed contiguously on disk. When multiple streams are being ingested and played out at the same time, it is critical that the filesystem does not cross the streams and interleave them together as this creates seek and readahead cache miss latency and prevents both ingest and playout from meeting frame rate targets. This patch set creates a "stream of files" concept into the allocator to place all the data from a single stream contiguously on disk so that RAID array readahead can be used effectively. Each additional stream gets placed in different allocation groups within the filesystem, thereby ensuring that we don't cross any streams. When an AG fills up, we select a new AG for the stream that is not in use. The core of the functionality is the stream tracking - each inode that we create in a directory needs to be associated with the directories' stream. Hence every time we create a file, we look up the directories' stream object and associate the new file with that object. Once we have a stream object for a file, we use the AG that the stream object point to for allocations. If we can't allocate in that AG (e.g. it is full) we move the entire stream to another AG. Other inodes in the same stream are moved to the new AG on their next allocation (i.e. lazy update). Stream objects are kept in a cache and hold a reference on the inode. Hence the inode cannot be reclaimed while there is an outstanding stream reference. This means that on unlink we need to remove the stream association and we also need to flush all the associations on certain events that want to reclaim all unreferenced inodes (e.g. filesystem freeze). SGI-PV: 964469 SGI-Modid: xfs-linux-melb:xfs-kern:29096a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Barry Naujok <bnaujok@sgi.com> Signed-off-by: Donald Douwsma <donaldd@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: Vlad Apostolov <vapo@sgi.com>