btrfs: let callers of btrfs_alloc_root pass gfp flags

We don't need to use GFP_NOFS in all contexts, eg. during mount or for
dummy root tree, but we might for the the log tree creation.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-02-11 11:01:55 +01:00
commit 74e4d82757