From c977eb1065612bf64e18c61437e290c22183add8 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Wed, 23 Apr 2014 07:11:41 +1000
Subject: [PATCH] xfs: split xfs_bmap_btalloc_nullfb

Split xfs_bmap_btalloc_nullfb into one function for filestream allocations
and one for everything else that share a few helpers.  This dramatically
simplifies the control flow.

Signed-off-by: Christoph Hellwig <hch@lst.de>
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