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path: root/fs/btrfs/ctree.h
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* 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>
* Btrfs: Reorder extent back refs to differentiate btree blocks from file dataChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add back pointers from the inode to the directory that references itChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add back pointers from extents to the btree or file referencing themChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Implement generation numbers in block pointersChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add simple stripe size parameterChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* btrfs_drop_extents: make sure the item is getting smaller before truncateChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add block group pinned accounting backYan2008-09-25
| | | | | | | | | This patch adds a helper function 'update_pinned_extents' to extent-tree.c. The usage of the helper function is similar to 'update_block_group', the last parameter of the function indicates pin vs unpin. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* xattr support for btrfsJosef Bacik2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Fix recursive KM_USER1 usage in btrfs_realloc_nodeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Optimize allocations as we need to mix data and metadata into one groupChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix a number of inline extent problems that Yan Zheng reported.Chris Mason2008-09-25
| | | | | | | | | | | | | | | | | | The fixes do a number of things: 1) Most btrfs_drop_extent callers will try to leave the inline extents in place. It can truncate bytes off the beginning of the inline extent if required. 2) writepage can now update the inline extent, allowing mmap writes to go directly into the inline extent. 3) btrfs_truncate_in_transaction truncates inline extents 4) extent_map.c fixed to not merge inline extent mappings and hole mappings together Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Optimize csum insertion to create larger items when possibleChris Mason2008-09-25
| | | | | | | This reduces the number of calls to btrfs_extend_item and greatly lowers the cpu usage while writing large files. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix typo: owner is a 64 bit fieldChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Defrag only leaves, and only when the parent node has a single objectidChris Mason2008-09-25
| | | | | | | 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>
* Btrfs: Add back metadata checksummingChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Breakout BTRFS_SETGET_FUNCS into a separate C file, the inlines were too big.Chris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: extent_map optimizations to cut down on CPU usageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allow tails larger than one pageChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Cache extent buffer mappingsChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Allow tree blocks larger than the page sizeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Change the remaining radix trees used by extent-tree.c to extent_map ↵Chris Mason2008-09-25
| | | | | | trees Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Stop using radix trees for the block group cacheChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Fix extent_buffer and extent_state leaksChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Avoid memcpy where possible in extent_buffersChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Optimizations for the extent_buffer codeChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Create extent_buffer interface for large blocksizesChris Mason2008-09-25
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: use unlocked_ioctlChristoph Hellwig2007-09-14
| | | | | | | No reason to grab the BKL before calling into the btrfs ioctl code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Find and remove dead roots the first time a root is loaded.Chris Mason2007-09-11
| | | | | | | | | | | | | | 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>
* Btrfs: Add more synchronization before creating a snapshotChris Mason2007-09-10
| | | | | | | | File data checksums are only done during writepage, so we have to make sure all pages are written when the snapshot is taken. This also adds some locking so that new writes don't race in and add new dirty pages. Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Use mount -o subvol to select the subvol directory instead of dev:Chris Mason2007-08-29
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Add per-root block accounting and sysfs entriesJosef Bacik2007-08-29
| | | | Signed-off-by: Chris Mason <chris.mason@oracle.com>
* Btrfs: Extent based page cache code. This uses an rbtree of extents and testsChris Mason2007-08-27
| | | | | | instead of buffer heads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
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