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authorSage Weil <sage@newdream.net>2010-06-21 10:38:14 -0700
committerSage Weil <sage@newdream.net>2010-06-21 16:04:10 -0700
commitd69ed05a80f23b25f06e73af9b7e701ce4900edc (patch)
treedfe4d372b1c2bb66a71d13d6bf8a22758640ddd0
parentcebc5be6b6c82a99231e9c9af451e9e3d3399ec6 (diff)
downloadop-kernel-dev-d69ed05a80f23b25f06e73af9b7e701ce4900edc.zip
op-kernel-dev-d69ed05a80f23b25f06e73af9b7e701ce4900edc.tar.gz
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 <sage@newdream.net>
-rw-r--r--fs/ceph/inode.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index ab47f46..8f9b9fe 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;
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