tree 6c17b4db9b39cb8eb950c21377f453df18f467c3
parent 848cce0d4102b5b4b26b0987b43e1919d462afe2
author Arne Jansen <sensille@gmx.net> 1330157370 +0100
committer David Sterba <dsterba@suse.cz> 1334769164 +0200

btrfs: fix race in reada

When inserting into the radix tree returns EEXIST, get the existing
entry without giving up the spinlock in between.
There was a race for both the zones trees and the extent tree.

Signed-off-by: Arne Jansen <sensille@gmx.net>