From 1876ca5ad4b92f0794c91d15502c16ad747dbf8b Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Tue, 2 Dec 2008 12:03:15 -0800
Subject: [PATCH] mds: pick_inode_snap should consider follows==0 valid

I suspect a larger audit of 'follows' semantics may be necessary..
but this fixes the bug I was seeing with:

echo asdf > a
mkdir .snap/1
echo qwer > b
mkdir .snap/2
echo zxcv > a
mkdir .snap/3
sync
cat .snap/1/a   # empty
ll .snap/*      # hangs
---
 src/mds/MDCache.cc | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/mds/MDCache.cc b/src/mds/MDCache.cc
index cbf33814b96df..fde5dfafd42dd 100644
--- a/src/mds/MDCache.cc
+++ b/src/mds/MDCache.cc
@@ -969,9 +969,6 @@ int MDCache::num_subtrees_fullnonauth()
  */
 CInode *MDCache::pick_inode_snap(CInode *in, snapid_t follows)
 {
-  if (follows == 0)
-    return in;
-
   dout(10) << "pick_inode_snap follows " << follows << " on " << *in << dendl;
 
   SnapRealm *realm = in->find_snaprealm();
-- 
2.39.5