[RFC][PATCH] btrfs: missing initialization while adding extent

[Ingo Oeser]

If we race while adding an extent and successful look it
of afterwards, we don't set the em->bdev. Now we do :-)


Signed-off-by: Ingo Oeser <ioe-lkml@xxxxxxxxxx>
---
 fs/btrfs/disk-io.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 81a3138..25a0d15 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -118,6 +118,7 @@ static struct extent_map *btree_get_extent(struct inode *inode,
 		free_extent_map(em);
 		em = lookup_extent_mapping(em_tree, start, len);
 		if (em) {
+			em->bdev = BTRFS_I(inode)->root->fs_info->fs_devices->latest_bdev;
 			ret = 0;
 		} else {
 			em = lookup_extent_mapping(em_tree, failed_start,
-- 
1.5.6.3

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