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path: root/fs/btrfs/ctree.h
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* Btrfs: Add new ioctl to add devicesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Make the resizer work based on shrinking and growing devicesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for labels in the super blockChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Check device uuids along with devidsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Write bio checksumming outside the FS mutexChris Mason2008-09-25
| | | | | | | This significantly improves streaming write performance by allowing concurrency in the data checksumming. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Create a work queue for bio writesChris Mason2008-09-25
| | | | | | | This allows checksumming to happen in parallel among many cpus, and keeps us from bogging down pdflush with the checksumming code. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add RAID10 supportChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add chunk uuids and update multi-device back referencesChris Mason2008-09-25
| | | | | | | | | | | | | | | | | | | | Block headers now store the chunk tree uuid Chunk items records the device uuid for each stripes Device extent items record better back refs to the chunk tree Block groups record better back refs to the chunk tree The chunk tree format has also changed. The objectid of BTRFS_CHUNK_ITEM_KEY used to be the logical offset of the chunk. Now it is a chunk tree id, with the logical offset being stored in the offset field of the key. This allows a single chunk tree to record multiple logical address spaces, upping the number of bytes indexed by a chunk tree from 2^64 to 2^128. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Add a min size parameter to btrfs_alloc_extentChris Mason2008-09-25
| | | | | | | | | On huge machines, delayed allocation may try to allocate massive extents. This change allows btrfs_alloc_extent to return something smaller than the caller asked for, and the data allocation routines will loop over the allocations until it fills the whole delayed alloc. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Do metadata checksums for reads via a workqueueChris Mason2008-09-25
| | | | | | | | | | | | | | | | Before, metadata checksumming was done by the callers of read_tree_block, which would set EXTENT_CSUM bits in the extent tree to show that a given range of pages was already checksummed and didn't need to be verified again. But, those bits could go away via try_to_releasepage, and the end result was bogus checksum failures on pages that never left the cache. The new code validates checksums when the page is read. It is a little tricky because metadata blocks can span pages and a single read may end up going via multiple bios. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix allocation profile initChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for duplicate blocks on a single spindleChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for mirroring across drivesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Reorder the flags field in struct btrfs_header and record a flag on writeoutChris Mason2008-09-25
| | | | | | | | This allows detection of blocks that have already been written in the running transaction so they can be recowed instead of modified again. It is step one in trusting the transid field of the block pointers. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Create a btrfs backing dev infoChris Mason2008-09-25
| | | | | | This allows intelligent versions of unplug and congestion functions Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Implement raid0 when multiple devices are presentChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for device scanning and detection ioctlsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Bring back mount -o ssd optimizationsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Move device information into the super block so it can be scannedChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Make the FS tree the last objectid in the tree of tree rootsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Dynamic chunk and block group allocationChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add support for multiple devices per filesystemChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: checksum file data at bio submission time instead of during writepageChris Mason2008-09-25
| | | | | | | | | | | | | | | | When we checkum file data during writepage, the checksumming is done one page at a time, making it difficult to do bulk metadata modifications to insert checksums for large ranges of the file at once. This patch changes btrfs to checksum on a per-bio basis instead. The bios are checksummed before they are handed off to the block layer, so each bio is contiguous and only has pages from the same inode. Checksumming on a bio basis allows us to insert and modify the file checksum items in large groups. It also allows the checksumming to be done more easily by async worker threads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: unaligned access fixesDavid Miller2008-09-25
| | | | | | | | | | | | | Btrfs set/get macros lose type information needed to avoid unaligned accesses on sparc64. ere is a patch for the kernel bits which fixes most of the unaligned accesses on sparc64. btrfs_name_hash is modified to return the hash value instead of getting a return location via a (potentially unaligned) pointer. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix i_blocks accountingChris Mason2008-09-25
| | | | | | | | | | Now that delayed allocation accounting works, i_blocks accounting is changed to only modify i_blocks when extents inserted or removed. The fillattr call is changed to include the delayed allocation byte count in the i_blocks result. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Update magicChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add data block hints to SSD mode tooChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: mount -o max_inline=size to control the maximum inline extent sizeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add inode item and backref in one insert, reducing cpu usageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: During deletes and truncate, remove many items at once from the treeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Split the extent_map code into two partsChris Mason2008-09-25
| | | | | | | | | | | | | | 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>
* Btrfs: Fix hole insertion corner casesChris Mason2008-09-25
| | | | | | | | | | There were a few places that could cause duplicate extent insertion, this adjusts the code that creates holes to avoid it. lookup_extent_map is changed to correctly return all of the extents in a range, even when there are none matching at the start of the range. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add mount -o ssd, which includes optimizations for seek free storageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Run igrab on data=ordered inodes to prevent deadlocks during writeoutChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Rework btrfs_drop_inode to avoid schedulingChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add drop inode func to avoid data=ordered deadlockChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Change magic string to reflect new formatChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add readonly inode flagYan2008-09-25
| | | | | | | This patch adds readonly inode flag support. A file with this flag can't be modified, but can be deleted. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add flush barriers on commitChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add inode flags supportYan2008-09-25
| | | | | | This patch adds NODATASUM & NODATACOW inode flags support. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletionChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add data=ordered supportChris Mason2008-09-25
| | | | | | | | 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: Reduce stack usage in the resizer, fix 32 bit compilesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add readahead to the online shrinker, and a mount -o alloc_start= for ↵Chris Mason2008-09-25
| | | | | | testing Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Support for online FS resize (grow and shrink)Chris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Implement basic support for -ENOSPCChris Mason2008-09-25
| | | | | | | | | | This is intended to prevent accidentally filling the drive. A determined user can still make things oops. It includes some accounting of the current bytes under delayed allocation, but this will change as things get optimized Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Back port to 2.6.18-el kernelsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add mount option to enforce a max extent sizeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add mount option to turn off data cowChris Mason2008-09-25
| | | | | | | | | | | A number of workloads do not require copy on write data or checksumming. mount -o nodatasum to disable checksums and -o nodatacow to disable both copy on write and checksumming. In nodatacow mode, copy on write is still performed when a given extent is under snapshot. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add mount -o nodatasum to turn of file data checksummingChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
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