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authorAlexander Block <ablock84@googlemail.com>2012-06-05 23:07:48 +0400
committerAlexander Block <ablock84@googlemail.com>2012-07-26 01:30:14 +0400
commit7069830a9e381e33d44ded45095f764844c71d24 (patch)
tree128cdd4c868bdaa436383e20930fbcc3b269de7e /fs/btrfs/ioctl.c
parent8ea05e3a4262b9e6871c349fa3486bcfc72ffd1a (diff)
downloadlinux-7069830a9e381e33d44ded45095f764844c71d24.tar.xz
Btrfs: add btrfs_compare_trees function
This function is used to find the differences between two trees. The tree compare skips whole subtrees if it detects shared tree blocks and thus is pretty fast. Signed-off-by: Alexander Block <ablock84@googlemail.com> Reviewed-by: David Sterba <dave@jikos.cz> Reviewed-by: Arne Jansen <sensille@gmx.net> Reviewed-by: Jan Schmidt <list.btrfs@jan-o-sch.net> Reviewed-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
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