- 11 Sep, 2007 7 commits
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Chris Mason authored
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>
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Christoph Hellwig authored
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:
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Christoph Hellwig authored
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:
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Christoph Hellwig authored
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:
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Christoph Hellwig authored
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:
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Christoph Hellwig authored
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Chris Mason authored
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:
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- 10 Sep, 2007 2 commits
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Chris Mason authored
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 authored
defrag. Signed-off-by:
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- 30 Aug, 2007 3 commits
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Chris Mason authored
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Chris Mason authored
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Chris Mason authored
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- 29 Aug, 2007 6 commits
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Chris Mason authored
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Yan authored
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Yan authored
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: -
Yan authored
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Yan authored
Fixup a few buffer_head release errors, and fix an off by one in balance_node_right. Signed-off-by: -
Josef Bacik authored
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- 27 Aug, 2007 5 commits
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Chris Mason authored
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Chris Mason authored
instead of buffer heads. Signed-off-by: -
Chris Mason authored
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Chris Mason authored
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Yan authored
Send the correct slot down to reada_for_search Signed-off-by:
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- 10 Aug, 2007 4 commits
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Chris Mason authored
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Josef Bacik authored
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Chris Mason authored
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 authored
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- 09 Aug, 2007 2 commits
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Chris Mason authored
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Chris Mason authored
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- 08 Aug, 2007 1 commit
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Chris Mason authored
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- 07 Aug, 2007 4 commits
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Chris Mason authored
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Chris Mason authored
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 authored
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Chris Mason authored
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:
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- 25 Jul, 2007 2 commits
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Joel Becker authored
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Chris Mason authored
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- 11 Jul, 2007 3 commits
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Josef Bacik authored
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Aneesh authored
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Zach Brown authored
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:
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- 28 Jun, 2007 1 commit
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Chris Mason authored
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