ceph: pass parent inode info to ceph_encode_dentry_release if we have it

If we have a parent inode reference already, then we don't need to
go back up the directory tree to find one.

Link: http://tracker.ceph.com/issues/18148
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index d1b4c54..4951ab9 100644 (file)
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -3924,9 +3924,10 @@ int ceph_encode_inode_release(void **p, struct inode *inode,
 }
 
 int ceph_encode_dentry_release(void **p, struct dentry *dentry,
+                              struct inode *dir,
                               int mds, int drop, int unless)
 {
-       struct dentry *parent;
+       struct dentry *parent = NULL;
        struct ceph_mds_request_release *rel = *p;
        struct ceph_dentry_info *di = ceph_dentry(dentry);
        int force = 0;
@@ -3941,11 +3942,13 @@ int ceph_encode_dentry_release(void **p, struct dentry *dentry,
        spin_lock(&dentry->d_lock);
        if (di->lease_session && di->lease_session->s_mds == mds)
                force = 1;
-       parent = dget(dentry->d_parent);
+       if (!dir) {
+               parent = dget(dentry->d_parent);
+               dir = d_inode(parent);
+       }
        spin_unlock(&dentry->d_lock);
 
-       ret = ceph_encode_inode_release(p, d_inode(parent), mds, drop,
-                                       unless, force);
+       ret = ceph_encode_inode_release(p, dir, mds, drop, unless, force);
        dput(parent);
 
        spin_lock(&dentry->d_lock);

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index c41c6aa..1b78457 100644 (file)
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1954,10 +1954,13 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
                      mds, req->r_inode_drop, req->r_inode_unless, 0);
        if (req->r_dentry_drop)
                releases += ceph_encode_dentry_release(&p, req->r_dentry,
-                      mds, req->r_dentry_drop, req->r_dentry_unless);
+                               req->r_locked_dir, mds, req->r_dentry_drop,
+                               req->r_dentry_unless);
        if (req->r_old_dentry_drop)
                releases += ceph_encode_dentry_release(&p, req->r_old_dentry,
-                      mds, req->r_old_dentry_drop, req->r_old_dentry_unless);
+                               req->r_old_dentry_dir, mds,
+                               req->r_old_dentry_drop,
+                               req->r_old_dentry_unless);
        if (req->r_old_inode_drop)
                releases += ceph_encode_inode_release(&p,
                      d_inode(req->r_old_dentry),

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 3373b61..a80a915 100644 (file)
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -904,6 +904,7 @@ extern void ceph_flush_dirty_caps(struct ceph_mds_client *mdsc);
 extern int ceph_encode_inode_release(void **p, struct inode *inode,
                                     int mds, int drop, int unless, int force);
 extern int ceph_encode_dentry_release(void **p, struct dentry *dn,
+                                     struct inode *dir,
                                      int mds, int drop, int unless);
 
 extern int ceph_get_caps(struct ceph_inode_info *ci, int need, int want,