From ad88f23f42a9b34a0b29a5b19d37251ccb7dd776 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Sun, 21 Jul 2013 20:25:25 +0800 Subject: [PATCH] ceph: drop CAP_LINK_SHARED when sending "link" request to MDS To handle "link" request, the MDS need to xlock inode's linklock, which requires revoking any CAP_LINK_SHARED. Signed-off-by: Yan, Zheng Reviewed-by: Sage Weil --- fs/ceph/dir.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c index f02d82b7933e..0e4da4a9c213 100644 --- a/fs/ceph/dir.c +++ b/fs/ceph/dir.c @@ -796,6 +796,8 @@ static int ceph_link(struct dentry *old_dentry, struct inode *dir, req->r_locked_dir = dir; req->r_dentry_drop = CEPH_CAP_FILE_SHARED; req->r_dentry_unless = CEPH_CAP_FILE_EXCL; + /* release LINK_SHARED on source inode (mds will lock it) */ + req->r_old_inode_drop = CEPH_CAP_LINK_SHARED; err = ceph_mdsc_do_request(mdsc, dir, req); if (err) { d_drop(dentry); -- 2.20.1