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author	Yan Zheng <zheng.yan@oracle.com>
	Mon, 28 Jul 2008 19:32:19 +0000 (15:32 -0400)
committer	Chris Mason <chris.mason@oracle.com>
	Thu, 25 Sep 2008 15:04:05 +0000 (11:04 -0400)
commit	31153d81284934601d08110ac7698fd9a535e4c0
tree	38f873fea3012a58d2a8f4d439a9546443617878	tree \| snapshot (tar.gz zip)
parent	3a115f520f391b4ab14041bdd6eedb370d944fa6	commit \| diff

Btrfs: Add a leaf reference cache

Much of the IO done while dropping snapshots is done looking up
leaves in the filesystem trees to see if they point to any extents and
to drop the references on any extents found.

This creates a cache so that IO isn't required.

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

fs/btrfs/Makefile		diff \| blob \| blame \| history
fs/btrfs/ctree.c		diff \| blob \| blame \| history
fs/btrfs/ctree.h		diff \| blob \| blame \| history
fs/btrfs/disk-io.c		diff \| blob \| blame \| history
fs/btrfs/extent-tree.c		diff \| blob \| blame \| history
fs/btrfs/ref-cache.c	[new file with mode: 0644]	blob
fs/btrfs/ref-cache.h	[new file with mode: 0644]	blob
fs/btrfs/transaction.c		diff \| blob \| blame \| history

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