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authorEric Paris <eparis@redhat.com>2010-02-23 19:43:04 +0000
committerChris Mason <chris.mason@oracle.com>2010-03-08 16:26:50 -0500
commit6bef4d317193d3badbbfa3f3c593758ace84a629 (patch)
tree8aa9fcf3297c69033b9a9a83a27ecccaab0f9d7d /fs/btrfs/extent_map.c
parent3f6fae9559225741c91f1320090b285da1413290 (diff)
Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL
btrfs inialize rb trees in quite a number of places by settin rb_node = NULL; The problem with this is that 17d9ddc72fb8bba0d4f678 in the linux-next tree adds a new field to that struct which needs to be NULL for the new rbtree library code to work properly. This patch uses RB_ROOT as the intializer so all of the relevant fields will be NULL'd. Without the patch I get a panic. Signed-off-by: Eric Paris <eparis@redhat.com> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_map.c')
-rw-r--r--fs/btrfs/extent_map.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 5a4f73b79b7..5a01f35507d 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -35,7 +35,7 @@ void extent_map_exit(void)
*/
void extent_map_tree_init(struct extent_map_tree *tree, gfp_t mask)
{
- tree->map.rb_node = NULL;
+ tree->map = RB_ROOT;
rwlock_init(&tree->lock);
}