From 8330a9d3b17a9d85cec2c5d2b0bcd3d657f8ae65 Mon Sep 17 00:00:00 2001
From: Alja Mrak-Tadel <amraktadel@ucsd.edu>
Date: Mon, 14 Sep 2015 12:53:42 -0700
Subject: [PATCH] DeRegister/Register files in case when they are ready for
 prefetching.

---
 src/XrdFileCache/XrdFileCacheFile.cc | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/XrdFileCache/XrdFileCacheFile.cc b/src/XrdFileCache/XrdFileCacheFile.cc
index bd786965df0..53edffa52c9 100644
--- a/src/XrdFileCache/XrdFileCacheFile.cc
+++ b/src/XrdFileCache/XrdFileCacheFile.cc
@@ -49,7 +49,7 @@ namespace XrdPosixGlobals
 namespace
 {
 const int PREFETCH_MAX_ATTEMPTS = 10;
-const size_t PREFETCH_MAX_BLOCKS=5;
+const size_t PREFETCH_MAX_BLOCKS=10;
 
 class DiskSyncer : public XrdJob
 {
@@ -361,6 +361,7 @@ Block* File::RequestBlock(int i, bool prefetch)
 
       if (m_prefetchState == kOn && m_block_map.size() > PREFETCH_MAX_BLOCKS) {
          m_prefetchState = kHold;
+         cache()->DeRegisterPrefetchFile(this); 
       }
       return b;
    }
@@ -840,8 +841,10 @@ void File::free_block(Block* b)
       cache()->RAMBlockReleased();
    }
 
-   if (m_prefetchState == kHold && m_block_map.size() < PREFETCH_MAX_BLOCKS)
+   if (m_prefetchState == kHold && m_block_map.size() < PREFETCH_MAX_BLOCKS) {
       m_prefetchState = kOn;
+      cache()->RegisterPrefetchFile(this); 
+   }
 }
 
 //------------------------------------------------------------------------------