[PATCH] Btrfs: skip subvol entries when checking if we've created a dir already

[PATCH] Btrfs: skip subvol entries when checking if we've created a dir already

[Josef Bacik]

We have logic to see if we've already created a parent directory by check to see
if an inode inside of that directory has a lower inode number than the one we
are currently processing.  The logic is that if there is a lower inode number
then we would have had to made sure the directory was created at that previous
point.  The problem is if we have subvols in that directory these will always be
lower since they are set to the first free objectid.  To fix this we just skip
entries with that inode number.  Thanks,

Reported-by: Emil Karlson <jekarlson@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---
 fs/btrfs/send.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 0efc2e2..5c09059 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -2538,7 +2538,8 @@ static int did_create_dir(struct send_ctx *sctx, u64 dir)
 		di = btrfs_item_ptr(eb, slot, struct btrfs_dir_item);
 		btrfs_dir_item_key_to_cpu(eb, di, &di_key);
 
-		if (di_key.objectid < sctx->send_progress) {
+		if (di_key.objectid != BTRFS_FIRST_FREE_OBJECTID &&
+		    di_key.objectid < sctx->send_progress) {
 			ret = 1;
 			goto out;
 		}
-- 
1.7.7.6