ceph: reserve caps for file layout/lock MDS requests

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Sage Weil <sage@inktank.com>

diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index efbe082..2042fd1 100644 (file)
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -110,6 +110,8 @@ static long ceph_ioctl_set_layout(struct file *file, void __user *arg)
                return PTR_ERR(req);
        req->r_inode = inode;
        ihold(inode);
+       req->r_num_caps = 1;
+
        req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL;
 
        req->r_args.setlayout.layout.fl_stripe_unit =
@@ -154,6 +156,7 @@ static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg)
                return PTR_ERR(req);
        req->r_inode = inode;
        ihold(inode);
+       req->r_num_caps = 1;
 
        req->r_args.setlayout.layout.fl_stripe_unit =
                        cpu_to_le32(l.stripe_unit);

diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c
index d94ba0d..1913988 100644 (file)
--- a/fs/ceph/locks.c
+++ b/fs/ceph/locks.c
@@ -45,6 +45,7 @@ static int ceph_lock_message(u8 lock_type, u16 operation, struct file *file,
                return PTR_ERR(req);
        req->r_inode = inode;
        ihold(inode);
+       req->r_num_caps = 1;
 
        /* mds requires start and length rather than start and end */
        if (LLONG_MAX == fl->fl_end)