mds: notify clients about deleted inode

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 <[email protected]> Reviewed-by: Sage Weil <[email protected]>
dragonylffly · Aug 9, 2013 · ca3987f · ca3987f
1 parent 151e6d2
commit ca3987f
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/mds/Locker.cc b/src/mds/Locker.cc
@@ -1777,6 +1777,10 @@ 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