From d69ed05a80f23b25f06e73af9b7e701ce4900edc Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 21 Jun 2010 10:38:14 -0700 Subject: [PATCH] ceph: handle splice_dentry/d_materialize_unique error in readdir_prepopulate Handle a splice_dentry failure (due to a d_materialize_unique error) without crashing. (Also, report the error code.) Signed-off-by: Sage Weil --- fs/ceph/inode.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index ab47f46ca282..8f9b9fe8ef9f 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -854,8 +854,8 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in, d_drop(dn); realdn = d_materialise_unique(dn, in); if (IS_ERR(realdn)) { - pr_err("splice_dentry error %p inode %p ino %llx.%llx\n", - dn, in, ceph_vinop(in)); + pr_err("splice_dentry error %ld %p inode %p ino %llx.%llx\n", + PTR_ERR(realdn), dn, in, ceph_vinop(in)); if (prehash) *prehash = false; /* don't rehash on error */ dn = realdn; /* note realdn contains the error */ @@ -1234,18 +1234,23 @@ retry_lookup: goto out; } dn = splice_dentry(dn, in, NULL); + if (IS_ERR(dn)) + dn = NULL; } if (fill_inode(in, &rinfo->dir_in[i], NULL, session, req->r_request_started, -1, &req->r_caps_reservation) < 0) { pr_err("fill_inode badness on %p\n", in); - dput(dn); - continue; + goto next_item; } - update_dentry_lease(dn, rinfo->dir_dlease[i], - req->r_session, req->r_request_started); - dput(dn); + if (dn) + update_dentry_lease(dn, rinfo->dir_dlease[i], + req->r_session, + req->r_request_started); +next_item: + if (dn) + dput(dn); } req->r_did_prepopulate = true;