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[1/2] mds: notify clients about deleted inode

Message ID 1374373274-3457-2-git-send-email-zheng.z.yan@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Yan, Zheng July 21, 2013, 2:21 a.m. UTC 
From: "Yan, Zheng" <zheng.z.yan@intel.com>

To make sure clients trim the deleted inode from the their cache
ASAP. After all clients release the inode, we can reclaim space.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
---
 src/mds/Locker.cc | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/src/mds/Locker.cc b/src/mds/Locker.cc
index 30e014a..7bbb749 100644
--- a/src/mds/Locker.cc
+++ b/src/mds/Locker.cc
@@ -1776,6 +1776,10 @@  bool Locker::issue_caps(CInode *in, Capability *only_cap)
       continue;
     }
 
+    // notify clients about deleted inode, to make sure they release caps ASAP.
+    if (in->inode.nlink == 0)
+      wanted |= CEPH_CAP_LINK_SHARED;
+
     // are there caps that the client _wants_ and can have, but aren't pending?
     // or do we need to revoke?
     if (((wanted & allowed) & ~pending) ||  // missing wanted+allowed caps