ceph: invalidate affected dentry leases on aborted requests
If we abort a request, we return to caller, but the request may still
complete. And if we hold the dir FILE_EXCL bit, we may not release a
lease when sending a request. A simple un-tar, control-c, un-tar again
will reproduce the bug (manifested as a 'Cannot open: File exists').
Ensure we invalidate affected dentry leases (as well dir I_COMPLETE) so
we don't have valid (but incorrect) leases. Do the same, consistently, at
other sites where I_COMPLETE is similarly cleared.
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 85b4d2f..220a2ae 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -938,8 +938,15 @@
ceph_inode(req->r_locked_dir);
dout(" clearing %p complete (empty trace)\n",
req->r_locked_dir);
+ spin_lock(&req->r_locked_dir->i_lock);
ci->i_ceph_flags &= ~CEPH_I_COMPLETE;
ci->i_release_count++;
+ spin_unlock(&req->r_locked_dir->i_lock);
+
+ if (req->r_dentry)
+ ceph_invalidate_dentry_lease(req->r_dentry);
+ if (req->r_old_dentry)
+ ceph_invalidate_dentry_lease(req->r_old_dentry);
}
return 0;
}
@@ -1011,13 +1018,15 @@
req->r_old_dentry->d_name.len,
req->r_old_dentry->d_name.name,
dn, dn->d_name.len, dn->d_name.name);
+
/* ensure target dentry is invalidated, despite
rehashing bug in vfs_rename_dir */
- dn->d_time = jiffies;
- ceph_dentry(dn)->lease_shared_gen = 0;
+ ceph_invalidate_dentry_lease(dn);
+
/* take overwritten dentry's readdir offset */
ceph_dentry(req->r_old_dentry)->offset =
ceph_dentry(dn)->offset;
+
dn = req->r_old_dentry; /* use old_dentry */
in = dn->d_inode;
}