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authorBobi Jam <bobijam.xu@intel.com>2016-05-04 10:28:52 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-05-09 14:01:14 +0200
commit1e5a6fa96689232faf92b2352dd4bb0fda28b37e (patch)
treea81fe2af53e237fc588b429a1d68d48e7e03579f /drivers/staging/lustre
parent4096e645d85d575e7b6e699f470f5519c34fda5d (diff)
downloadop-kernel-dev-1e5a6fa96689232faf92b2352dd4bb0fda28b37e.zip
op-kernel-dev-1e5a6fa96689232faf92b2352dd4bb0fda28b37e.tar.gz
staging: lustre: nfs: don't panic NFS server if MDS fails to find FID
When MDS fails to retrive the parent's fid, we'd handle it without crashing the NFS server. Signed-off-by: Bobi Jam <bobijam.xu@intel.com> Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3952 Reviewed-on: http://review.whamcloud.com/8459 Reviewed-by: Fan Yong <fan.yong@intel.com> Reviewed-by: wangdi <di.wang@intel.com> Reviewed-by: Oleg Drokin <oleg.drokin@intel.com> Signed-off-by: James Simmons <jsimmons@infradead.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre')
-rw-r--r--drivers/staging/lustre/lustre/llite/llite_nfs.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/staging/lustre/lustre/llite/llite_nfs.c b/drivers/staging/lustre/lustre/llite/llite_nfs.c
index 61cb5ff..c1eef61 100644
--- a/drivers/staging/lustre/lustre/llite/llite_nfs.c
+++ b/drivers/staging/lustre/lustre/llite/llite_nfs.c
@@ -322,11 +322,14 @@ static struct dentry *ll_get_parent(struct dentry *dchild)
return ERR_PTR(rc);
}
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
- LASSERT(body->valid & OBD_MD_FLID);
-
- CDEBUG(D_INFO, "parent for " DFID " is " DFID "\n",
- PFID(ll_inode2fid(dir)), PFID(&body->fid1));
-
+ /*
+ * LU-3952: MDT may lost the FID of its parent, we should not crash
+ * the NFS server, ll_iget_for_nfs() will handle the error.
+ */
+ if (body->valid & OBD_MD_FLID) {
+ CDEBUG(D_INFO, "parent for " DFID " is " DFID "\n",
+ PFID(ll_inode2fid(dir)), PFID(&body->fid1));
+ }
result = ll_iget_for_nfs(dir->i_sb, &body->fid1, NULL);
ptlrpc_req_finished(req);
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