From: Ramesh Chander <Ramesh.Chander@sandisk.com>
Date: Fri, 12 Aug 2016 06:27:38 +0000 (-0700)
Subject: batch is_allocated bit checks
X-Git-Tag: ses5-milestone5~134^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=47c5fb00620869ff45c35c54aeff8e416d79c738;p=ceph.git

batch is_allocated bit checks

Signed-off-by: Ramesh Chander <Ramesh.Chander@sandisk.com>
---

diff --git a/src/os/bluestore/BitAllocator.cc b/src/os/bluestore/BitAllocator.cc
index c03f84be5ec9..63489038b4e7 100644
--- a/src/os/bluestore/BitAllocator.cc
+++ b/src/os/bluestore/BitAllocator.cc
@@ -143,14 +143,10 @@ bmap_t BmapEntry::atomic_fetch()
   return m_bits;
 }
 
-bool BmapEntry::is_allocated(int64_t start_bit, int64_t num_bits)
+bool BmapEntry::is_allocated(int64_t offset, int64_t num_bits)
 {
-  for (int i = start_bit; i < num_bits + start_bit; i++) {
-    if (!check_bit(i)) {
-      return false;
-    }
-  }
-  return true;
+  bmap_t bmask = BmapEntry::align_mask(num_bits) >> offset;
+  return ((m_bits & bmask) == bmask);
 }
 
 void BmapEntry::clear_bit(int bit)