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2008-09-25Btrfs: Fix read/write_extent_buffer to use KM_USER1 instead of KM_USER0Chris Mason
This avoids recursive use of KM_USER0 during btrfs_file_write Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: sysfs compile fixupJens Axboe
Just use kobject_set_name(), that works in all kernels (I think...). Kernels newer than 2.6.23 currently fail with: /home/axboe/git/btrfs/btrfs-unstable/sysfs.c:188: error: unknown field 'name' specified in initializer Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: KM_IRQ0 usage in end_io handlingJens Axboe
endio handling is typically called with interrupts disabled, but can also be called with it enabled. So save interrupts before using KM_IRQ0 to be completely safe. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix bi_end_io() functions on > 2.6.23 kernelsJens Axboe
It now returns void and it is never called for partial completions, so the bio->bi_size check must go. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25btrfs: 32-bit type problemsJens Axboe
An assorted set of casts to get rid of the warnings on 32-bit archs. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Properly setup root key while reading the rootYan Zheng
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix typo: owner is a 64 bit fieldChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Default to 8k max packed tailsChris Mason
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 Mason
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 back file data checksummingChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Defrag: only walk into nodes with the defrag bit setChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: balance_dirty_pages_ratelimited is causing problems, use nr == 1 alwaysChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Large block related defrag optimizationsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add back metadata checksummingChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Breakout BTRFS_SETGET_FUNCS into a separate C file, the inlines were too big.Chris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: extent_map optimizations to cut down on CPU usageChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Allow tails larger than one pageChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add an extent buffer LRU to reduce radix tree hitsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix allocation routines to avoid intermixing data and metadata ↵Chris Mason
allocations Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Add back the online defragging codeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Use an array of pages in the extent buffers to reduce the cost of ↵Chris Mason
find_get_page Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Cache extent buffer mappingsChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Allow tree blocks larger than the page sizeChris Mason
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 Mason
trees Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Stop using radix trees for the block group cacheChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix extent_buffer and extent_state leaksChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Go back to kmaps instead of page_address in extent_buffersChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Avoid memcpy where possible in extent_buffersChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Optimizations for the extent_buffer codeChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Create extent_buffer interface for large blocksizesChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25btrfs_get_extent should treat inline extents as though they hold a whole blockChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: factor page private preparations into a helperChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix double free and off by one in inode.cYan
The first change removes potential double free, the second fix a off by one error. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: truncate: don't update inode->i_blocks when extent is a holeYan
I think check whether extent is a hole before update 'inode->i_blocks' is unconditional required. (original codes check it only when del_item isn't equal to 0) Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25create btrfs_path slab with the correct sizeYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25fix found_type decrement in btrfs_truncate_in_transYan
found_type has already been decreased by codes above the change, I think decrease it by one again doesn't make sense. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Fix duplicate ENOSPC checks in find_free_extentChris Mason
find_free_extent would fail to wrap around to the start of the drive because it was doing the enospc case checking twice in some cases, causing it to return -ENOSPC early. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2008-09-25Btrfs: Use balance_dirty_pages_nr on btree blocksChris Mason
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>
2007-09-14Btrfs: Fix cache_block_group to catch holes at the start of the groupYan
Cache block group was overly complex and missed free blocks at the very start of the group. This patch simplifies things significantly. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-14Btrfs: Fix off by one error in dirty_and_release_pagesYan
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-14split up btrfs_ioctlChristoph Hellwig
Add a helper per ioctl function to make the code more readable. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-14Btrfs: use unlocked_ioctlChristoph Hellwig
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>
2007-09-14Btrfs: Simplify makefileJan Engelhardt
Single-colons will do here. Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-14Btrfs: add modules_install targetChris Mason
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2007-09-14Btrfs: Fix extra link count dec in renameChris Mason
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 Mason
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>
2007-09-10Btrfs: [PATCH] extent_map: add writepage_end_io hookChristoph Hellwig
XFS updates the ondisk inode size only after the data I/O has finished, so it needs a hook when the writepage end_bio handler has finished. Might not be worth applying as-is as the per-page callback is very ineffcient. What XFS really wants is a callback when writeout of a whole extent has completed. This delayed i_size updates scheme might be worthwile for btrfs aswell, btw. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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>
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