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2007-09-10Btrfs: [PATCH] extent_map: make the writepage_io hook optionalChristoph Hellwig
The writepage_io is not mandatory, e.g. my port of xfs to the extent_map code does not have one for now. So handle a NULL pointer gracefully here. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-10Btrfs: [PATCH] extent_map: provide generic bmapChristoph Hellwig
generic_bmap is completely trivial, while the extent to bh mapping in btrfs is rather complex. So provide a extent_bmap instead that takes a get_extent callback and can be used by filesystem using the extent_map code. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-10Btrfs: [PATCH] extent_map: fix locking for bio completionChristoph Hellwig
The bio completion handlers can be run in any context, e.g. when using the old ide driver they run in hardirq context with irqs disabled so lockdep rightfully warns about using write_lock_irq useage in these handlers. This patch switches clear_extent_bit and set_extent_bit to write_lock_irqsave to fix this problem. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-10[PATCH] btrfs: fix printk format warningChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-10Btrfs: Reorder tests in set_extent_bit to properly find holesChris Mason
Yan Zheng noticed that set_extent_bit was exiting too early when there was a hole in the map. The fix is to reorder the tests to check for the hole first. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-10Btrfs: Add more synchronization before creating a snapshotChris Mason
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>
2007-09-10Add support for defragging files via btrfsctl -d. Avoid OOM on extent treeChris Mason
defrag. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-30Btrfs: remove extra drop_extent_cache callChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-30Btrfs: fsx delalloc fixesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-30Btrfs: Add file data csums back in via hooks in the extent map codeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: Use mount -o subvol to select the subvol directory instead of dev:Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: Fix oopsen in extent_tree.c during enospcYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: Add mount into directory supportYan
Modified form of original patch from Christoph Hellwig to make btrfs mount into the default subvolume by default. mount /dev/somedevice:subvolumename to get other subvolumes or mount /dev/somedevice:. to get the root Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: Fix mknod to properly send rdev info back to diskYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: ctree.c cleanupsYan
Fixup a few buffer_head release errors, and fix an off by one in balance_node_right. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-29Btrfs: Add per-root block accounting and sysfs entriesJosef Bacik
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-27Btrfs: Add delayed allocation to the extent based page tree codeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-27Btrfs: Extent based page cache code. This uses an rbtree of extents and testsChris Mason
instead of buffer heads. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-27Btrfs: Make sure to cow the root during a snapshotChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-27Btrfs: Do more extensive readahead during tree searchesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-27fix block readahead in btrfs_next_leafYan
Send the correct slot down to reada_for_search Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-10Btrfs: delay commits during fsync to allow more writersJosef Bacik
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-10Btrfs: Add BH_Defrag to mark buffers that are in need of defraggingChris Mason
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>
2007-08-10Btrfs: Btree defrag on the extent-mapping tree as wellChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-08Btrfs: Further reduce the concurrency penalty of defrag and drop_snapshotChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-08Btrfs: Replace extent tree preallocation code with some bit radix magic.Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-08Btrfs: Let some locks go during defrag and snapshot droppingChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-07Btrfs: Add run time btree defrag, and an ioctl to force btree defragChris Mason
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: Fold some btree readahead routines into something more generic.Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-08-07Btrfs: Do snapshot deletion in smaller chunks.Chris Mason
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>
2007-07-25Btrfs: cleaner make cleanJoel Becker
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-07-25Btrfs: deal with api changes in 2.6.23-rc1Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-07-11Btrfs: Implement mknodJosef Bacik
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-07-11Btrfs: Some code cleanupsAneesh
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-07-11Btrfs: trivial include fixupsZach Brown
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 Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-26Btrfs: Allow find_free_extent callers to pass in an exclusion rangeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-26Btrfs: Fix super block updates during transaction commitChris Mason
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>
2007-06-25Btrfs: Fix mtime and ctime updates on parent dirsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-22Btrfs: Documentation updateChris Mason
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 Mason
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 Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-22Btrfs: Switch to libcrc32c to avoid problems with cryptomgr on highmem machinesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-19Btrfs: reada while dropping snapshotsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-19Btrfs: cache the extent tree preallocationChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-18Subject: Rework btrfs_file_write to only allocate while page locks are heldChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-15Btrfs: patch queue: page_mkwriteChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-13btrfs: Code cleanupAneesh
Attaching below is some of the code cleanups that i came across while reading the code. a) alloc_path already calls init_path. b) Mention that btrfs_inode is the in memory copy.Ext4 have ext4_inode_info as the in memory copy ext4_inode as the disk copy Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12Btrfs: i386 fixes from axboeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-06-12Btrfs: add GPLv2Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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