Btrfs: Index extent buffers in an rbtree

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Before, extent buffers were a temporary object, meant to map a number of pages
at once and collect operations on them.

But, a few extra fields have crept in, and they are also the best place to
store a per-tree block lock field as well.  This commit puts the extent
buffers into an rbtree, and ensures a single extent buffer for each
tree block.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

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This commit is contained in:

Chris Mason 2008-07-22 11:18:07 -04:00

parent 4a09675279

commit 6af118ce51

4 changed files with 129 additions and 220 deletions

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26

fs/btrfs/disk-io.c

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309

fs/btrfs/extent_io.c

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11

fs/btrfs/extent_io.h

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3

fs/btrfs/inode.c

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