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path: root/fs/btrfs/transaction.c
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2008-09-25Btrfs: Split the extent_map code into two partsChris Mason1-4/+4
There is now extent_map for mapping offsets in the file to disk and extent_io for state tracking, IO submission and extent_bufers. The new extent_map code shifts from [start,end] pairs to [start,len], and pushes the locking out into the caller. This allows a few performance optimizations and is easier to use. A number of extent_map usage bugs were fixed, mostly with failing to remove extent_map entries when changing the file. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add mount -o ssd, which includes optimizations for seek free storageChris Mason1-0/+1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix data=ordered vs wait_on_inode deadlock on older kernelsChris Mason1-17/+13
Using ilookup5 during data=ordered writeback could deadlock on I_LOCK. This saves a pointer to the inode instead. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeoutChris Mason1-0/+1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Rework btrfs_drop_inode to avoid schedulingChris Mason1-0/+2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletionChris Mason1-0/+4
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Move snapshot creation to commit timeChris Mason1-3/+78
It is very difficult to create a consistent snapshot of the btree when other writers may update the btree before the commit is done. This changes the snapshot creation to happen during the commit, while no other updates are possible. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add data=ordered supportChris Mason1-0/+58
This forces file data extents down the disk along with the metadata that references them. The current implementation is fairly simple, and just writes out all of the dirty pages in an inode before the commit. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Reduce stack usage in the resizer, fix 32 bit compilesChris Mason1-5/+15
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Back port to 2.6.18-el kernelsChris Mason1-0/+8
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: section mismatch warningsChristian Hesse1-1/+1
--Boundary-00=_CcOWHFYK4T+JwSj Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Hello everybody, compiling btrfs into the kernel results in section mismatch warnings. __exit functions are called where they are not allowed to. The attached patch fixes this for me. Not sure if it is correct though. Signed-off-by: Christian Hesse <mail@earthworm.de> -- Regards, Chris --Boundary-00=_CcOWHFYK4T+JwSj Content-Type: text/x-diff; charset="iso-8859-1"; name="btrfs-section_mismatches.patch" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="btrfs-section_mismatches.patch" Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix PAGE_CACHE_SHIFT shifts on 32 bit machinesChris Mason1-1/+1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Defrag only leaves, and only when the parent node has a single objectidChris Mason1-2/+0
This allows us to defrag huge directories, but skip the expensive defrag case in more common usage, where it does not help as much. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add an extent buffer LRU to reduce radix tree hitsChris Mason1-3/+2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add back the online defragging codeChris Mason1-2/+2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Allow tree blocks larger than the page sizeChris Mason1-17/+22
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Change the remaining radix trees used by extent-tree.c to extent_map ↵Chris Mason1-2/+3
trees Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix extent_buffer and extent_state leaksChris Mason1-2/+3
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Create extent_buffer interface for large blocksizesChris Mason1-27/+34
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Use balance_dirty_pages_nr on btree blocksChris Mason1-4/+10
btrfs_btree_balance_dirty is changed to pass the number of pages dirtied for more accurate dirty throttling. This lets the VM make better decisions about when to force some writeback. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-11Btrfs: Find and remove dead roots the first time a root is loaded.Chris Mason1-2/+4
Dead roots are trees left over after a crash, and they were either in the process of being removed or were waiting to be removed when the box crashed. Before, a search of the entire tree of root pointers was done on mount looking for dead roots. Now, the search is done the first time we load a root. This makes mount faster when there are a large number of snapshots, and it enables the block accounting code to properly update the block counts on the latest root as old versions of the root are reaped after a crash. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: Add per-root block accounting and sysfs entriesJosef Bacik1-1/+33
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-11Btrfs: delay commits during fsync to allow more writersJosef Bacik1-12/+32
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-10Btrfs: Btree defrag on the extent-mapping tree as wellChris Mason1-42/+49
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-09Btrfs: Further reduce the concurrency penalty of defrag and drop_snapshotChris Mason1-0/+3
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-09Btrfs: Replace extent tree preallocation code with some bit radix magic.Chris Mason1-0/+2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-08Btrfs: Let some locks go during defrag and snapshot droppingChris Mason1-0/+8
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-08Btrfs: Add run time btree defrag, and an ioctl to force btree defragChris Mason1-18/+87
This adds two types of btree defrag, a run time form that tries to defrag recently allocated blocks in the btree when they are still in ram, and an ioctl that forces defrag of all btree blocks. File data blocks are not defragged yet, but this can make a huge difference in sequential btree reads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-07Btrfs: Do snapshot deletion in smaller chunks.Chris Mason1-25/+38
Before, snapshot deletion was a single atomic unit. This caused considerable lock contention and required an unbounded amount of space. Now, the drop_progress field in the root item is used to indicate how far along snapshot deletion is, and to resume where it left off. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-07-11Btrfs: trivial include fixupsZach Brown1-1/+0
Almost none of the files including module.h need to do so, remove them. Include sched.h in extent-tree.c to silence a warning about cond_resched() being undeclared. Signed-off-by: Zach Brown <zach.brown@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-28Btrfs: crash recovery fixesChris Mason1-20/+34
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-26Btrfs: Fix super block updates during transaction commitChris Mason1-2/+6
The super block written during commit was not consistent with the state of the trees. This change adds an in-memory copy of the super so that we can make sure to write out consistent data during a commit. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-22Btrfs: Documentation updateChris Mason1-1/+0
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-22Btrfs: Add the ability to find and remove dead roots after a crash.Chris Mason1-7/+47
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-22Btrfs: Audit callers and return codes to make sure -ENOSPC gets up the stackChris Mason1-7/+14
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-18Subject: Rework btrfs_file_write to only allocate while page locks are heldChris Mason1-0/+1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12Btrfs: i386 fixes from axboeChris Mason1-0/+1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12Btrfs: add GPLv2Chris Mason1-0/+18
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-09Btrfs: remove device treeChris Mason1-6/+0
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-09Btrfs: reap dead roots right after commitChris Mason1-7/+8
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-09Btrfs: get forced transaction commits via workqueueChris Mason1-10/+20
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-08Btrfs: add compat ioctlChris Mason1-0/+60
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-05-10Btrfs: many allocator fixes, pretty solidChris Mason1-1/+2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-05-02Btrfs: fix page cache memory leakChris Mason1-3/+5
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-30Btrfs: allocator improvements, inode block groupsChris Mason1-0/+1
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-28Btrfs: smarter transaction writebackChris Mason1-2/+35
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-27Btrfs: start of block group codeChris Mason1-0/+2
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-20Btrfs: early fsync supportChris Mason1-3/+22
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-12Btrfs: add disk ioctl, mostly workingChris Mason1-0/+6
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-04-11Btrfs: create a logical->phsyical block number mapping schemeChris Mason1-4/+4
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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