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path: root/fs/btrfs/disk-io.h
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* Btrfs: Verify checksums on tree blocks found without read_tree_blockChris Mason2008-09-251-0/+2
| | | | | | | | | | | | | | | | | Checksums were only verified by btrfs_read_tree_block, which meant the functions to probe the page cache for blocks were not validating checksums. Normally this is fine because the buffers will only be in cache if they have already been validated. But, there is a window while the buffer is being read from disk where it could be up to date in the cache but not yet verified. This patch makes sure all buffers go through checksum verification before they are used. This is safer, and it prevents modification of buffers before they go through the csum code. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for device scanning and detection ioctlsChris Mason2008-09-251-1/+3
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for multiple devices per filesystemChris Mason2008-09-251-0/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletionChris Mason2008-09-251-0/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add data=ordered supportChris Mason2008-09-251-0/+2
| | | | | | | | 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>
* Btrfs: Support for online FS resize (grow and shrink)Chris Mason2008-09-251-0/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add back file data checksummingChris Mason2008-09-251-0/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add back the online defragging codeChris Mason2008-09-251-0/+7
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allow tree blocks larger than the page sizeChris Mason2008-09-251-4/+5
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Create extent_buffer interface for large blocksizesChris Mason2008-09-251-44/+11
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Use balance_dirty_pages_nr on btree blocksChris Mason2008-09-251-1/+1
| | | | | | | | 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>
* Add support for defragging files via btrfsctl -d. Avoid OOM on extent treeChris Mason2007-09-101-0/+2
| | | | | | defrag. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add per-root block accounting and sysfs entriesJosef Bacik2007-08-291-1/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Extent based page cache code. This uses an rbtree of extents and testsChris Mason2007-08-271-1/+0
| | | | | | instead of buffer heads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add BH_Defrag to mark buffers that are in need of defraggingChris Mason2007-08-101-0/+2
| | | | | | | | This allows the tree walking code to defrag only the newly allocated buffers, it seems to be a good balance between perfect defragging and the performance hit of repeatedly reallocating blocks. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: crash recovery fixesChris Mason2007-06-281-0/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add the ability to find and remove dead roots after a crash.Chris Mason2007-06-221-0/+3
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: add GPLv2Chris Mason2007-06-121-0/+18
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: fix page cache memory leakChris Mason2007-05-021-0/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: directory readaheadChris Mason2007-05-011-0/+6
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: add a device id to device itemsChris Mason2007-04-121-0/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: add disk ioctl, mostly workingChris Mason2007-04-121-0/+6
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: create a logical->phsyical block number mapping schemeChris Mason2007-04-111-0/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: groundwork for subvolume and snapshot rootsChris Mason2007-04-091-0/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: still corruption huntingChris Mason2007-04-021-3/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: verify csums on readChris Mason2007-03-291-0/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: use a btree inode instead of sb_getblkChris Mason2007-03-281-2/+3
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: transaction reworkChris Mason2007-03-221-4/+4
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Mountable btrfs, with readdirChris Mason2007-03-221-23/+28
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: initial move to kernel module landChris Mason2007-03-211-0/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: transaction handles everywhereChris Mason2007-03-161-6/+10
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: variable block size supportChris Mason2007-03-141-5/+4
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Change the super to point to a tree of trees to enable persistent ↵Chris Mason2007-03-131-1/+2
| | | | | | snapshots Signed-off-by: Chris Mason <chris.mason@oracle.com>
* rename funcs and structs to btrfsChris Mason2007-03-131-14/+15
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fixup reference counting on cowsChris Mason2007-03-061-2/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: pretend page cache & commit codeChris Mason2007-03-011-0/+6
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Block sized tree extents and extent deletionChris Mason2007-02-231-1/+1
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: extent fixesChris Mason2007-02-211-2/+2
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: early extent mapping supportChris Mason2007-02-201-0/+3
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add backing store, memory managementChris Mason2007-02-021-0/+21
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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