tree 20749d5e90763e8c1746d36b00c5beec5e3660b9
parent eebe063b7f916087cd5c61de57b20a3a30894a96
author Arne Jansen <sensille@gmx.net> 1315904148 +0200
committer Jan Schmidt <list.btrfs@jan-o-sch.net> 1325689949 +0100

Btrfs: add nested locking mode for paths

This patch adds the possibilty to read-lock an extent even if it is already
write-locked from the same thread. btrfs_find_all_roots() needs this
capability.

Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>