From: Jianpeng Ma <jianpeng.ma@intel.com>
Date: Sat, 23 Apr 2016 15:21:58 +0000 (+0800)
Subject: os/bluestore/KernelDevice: For buffer mode no need do bufferlist::rebuild.
X-Git-Tag: v11.0.0~136^2~7^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=57cd218baf90777e8343b88c5b391716a1774785;p=ceph.git

os/bluestore/KernelDevice: For buffer mode no need do bufferlist::rebuild.

Signed-off-by: Jianpeng Ma <jianpeng.ma@intel.com>
---

diff --git a/src/os/bluestore/KernelDevice.cc b/src/os/bluestore/KernelDevice.cc
index 08304e8757e5..017761b58707 100644
--- a/src/os/bluestore/KernelDevice.cc
+++ b/src/os/bluestore/KernelDevice.cc
@@ -375,7 +375,7 @@ int KernelDevice::aio_write(
   assert(off < size);
   assert(off + len <= size);
 
-  if (!bl.is_n_align_sized(block_size) || !bl.is_aligned(block_size)) {
+  if (!buffered && (!bl.is_n_align_sized(block_size) || !bl.is_aligned(block_size))) {
     dout(20) << __func__ << " rebuilding buffer to be aligned" << dendl;
     bl.rebuild_aligned(block_size);
   }