Prior to kernel v3.19, d_invalidate() might not unhash stale dentries due to reference count, so the stale dentries are left in the memory, causing a delayed expiration. Fixes: http://tracker.ceph.com/issues/23097 Signed-off-by: Yupeng Chen <chenyupeng-it@xxxxxx> --- fs/ceph/inode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index c6ec5aa..70a38f2 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -1345,6 +1345,10 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req) dn, d_inode(dn), ceph_vinop(d_inode(dn)), ceph_vinop(in)); d_invalidate(dn); + /* Prito to v3.19,d_invalidate might unhash the dentry unsuccessfully.*/ + if (!d_unhashed(dn)) { + d_drop(dn); + } have_lease = false; } -- 1.8.3.1 ?韬{.n?????%??檩??w?{.n????u朕?Ф?塄}?财??j:+v?? ? ???2??璀??摺?囤??z夸z罐?+?????w棹f
