1 files changed, 47 insertions, 23 deletions

diff --git a/drivers/staging/lustre/lustre/llite/llite_nfs.c b/drivers/staging/lustre/lustre/llite/llite_nfs.c
index 65972c892731..709230571b4b 100644
--- a/drivers/staging/lustre/lustre/llite/llite_nfs.c
+++ b/drivers/staging/lustre/lustre/llite/llite_nfs.c
@@ -38,7 +38,6 @@
  */
 
 #define DEBUG_SUBSYSTEM S_LLITE
-#include "../include/lustre_lite.h"
 #include "llite_internal.h"
 #include <linux/exportfs.h>
 
@@ -73,11 +72,6 @@ void get_uuid2fsid(const char *name, int len, __kernel_fsid_t *fsid)
 	fsid->val[1] = key >> 32;
 }
 
-static int ll_nfs_test_inode(struct inode *inode, void *opaque)
-{
-	return lu_fid_eq(&ll_i2info(inode)->lli_fid, opaque);
-}
-
 struct inode *search_inode_for_lustre(struct super_block *sb,
 				      const struct lu_fid *fid)
 {
@@ -92,7 +86,7 @@ struct inode *search_inode_for_lustre(struct super_block *sb,
 
 	CDEBUG(D_INFO, "searching inode for:(%lu,"DFID")\n", hash, PFID(fid));
 
-	inode = ilookup5(sb, hash, ll_nfs_test_inode, (void *)fid);
+	inode = ilookup5(sb, hash, ll_test_inode_by_fid, (void *)fid);
 	if (inode)
 		return inode;
 
@@ -153,12 +147,18 @@ ll_iget_for_nfs(struct super_block *sb, struct lu_fid *fid, struct lu_fid *paren
 		return ERR_PTR(-ESTALE);
 	}
 
+	result = d_obtain_alias(inode);
+	if (IS_ERR(result)) {
+		iput(inode);
+		return result;
+	}
+
 	/**
-	 * It is an anonymous dentry without OST objects created yet.
-	 * We have to find the parent to tell MDS how to init lov objects.
+	 * In case d_obtain_alias() found a disconnected dentry, always update
+	 * lli_pfid to allow later operation (normally open) have parent fid,
+	 * which may be used by MDS to create data.
 	 */
-	if (S_ISREG(inode->i_mode) && !ll_i2info(inode)->lli_has_smd &&
-	    parent && !fid_is_zero(parent)) {
+	if (parent) {
 		struct ll_inode_info *lli = ll_i2info(inode);
 
 		spin_lock(&lli->lli_lock);
@@ -255,6 +255,8 @@ static int ll_get_name(struct dentry *dentry, char *name,
 		.lgd_fid = ll_i2info(d_inode(child))->lli_fid,
 		.ctx.actor = ll_nfs_get_name_filldir,
 	};
+	struct md_op_data *op_data;
+	__u64 pos = 0;
 
 	if (!dir || !S_ISDIR(dir->i_mode)) {
 		rc = -ENOTDIR;
@@ -266,9 +268,18 @@ static int ll_get_name(struct dentry *dentry, char *name,
 		goto out;
 	}
 
+	op_data = ll_prep_md_op_data(NULL, dir, dir, NULL, 0, 0,
+				     LUSTRE_OPC_ANY, dir);
+	if (IS_ERR(op_data)) {
+		rc = PTR_ERR(op_data);
+		goto out;
+	}
+
+	op_data->op_max_pages = ll_i2sbi(dir)->ll_md_brw_pages;
 	inode_lock(dir);
-	rc = ll_dir_read(dir, &lgd.ctx);
+	rc = ll_dir_read(dir, &pos, op_data, &lgd.ctx);
 	inode_unlock(dir);
+	ll_finish_md_op_data(op_data);
 	if (!rc && !lgd.lgd_found)
 		rc = -ENOENT;
 out:
@@ -297,14 +308,12 @@ static struct dentry *ll_fh_to_parent(struct super_block *sb, struct fid *fid,
 	return ll_iget_for_nfs(sb, &nfs_fid->lnf_parent, NULL);
 }
 
-static struct dentry *ll_get_parent(struct dentry *dchild)
+int ll_dir_get_parent_fid(struct inode *dir, struct lu_fid *parent_fid)
 {
 	struct ptlrpc_request *req = NULL;
-	struct inode	  *dir = d_inode(dchild);
 	struct ll_sb_info     *sbi;
-	struct dentry	 *result = NULL;
 	struct mdt_body       *body;
-	static char	   dotdot[] = "..";
+	static const char dotdot[] = "..";
 	struct md_op_data     *op_data;
 	int		   rc;
 	int		      lmmsize;
@@ -319,13 +328,13 @@ static struct dentry *ll_get_parent(struct dentry *dchild)
 
 	rc = ll_get_default_mdsize(sbi, &lmmsize);
 	if (rc != 0)
-		return ERR_PTR(rc);
+		return rc;
 
 	op_data = ll_prep_md_op_data(NULL, dir, NULL, dotdot,
 				     strlen(dotdot), lmmsize,
 				     LUSTRE_OPC_ANY, NULL);
 	if (IS_ERR(op_data))
-		return (void *)op_data;
+		return PTR_ERR(op_data);
 
 	rc = md_getattr_name(sbi->ll_md_exp, op_data, &req);
 	ll_finish_md_op_data(op_data);
@@ -333,21 +342,36 @@ static struct dentry *ll_get_parent(struct dentry *dchild)
 		CERROR("%s: failure inode "DFID" get parent: rc = %d\n",
 		       ll_get_fsname(dir->i_sb, NULL, 0),
 		       PFID(ll_inode2fid(dir)), rc);
-		return ERR_PTR(rc);
+		return rc;
 	}
 	body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
 	/*
 	 * 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) {
+	if (body->mbo_valid & OBD_MD_FLID) {
 		CDEBUG(D_INFO, "parent for " DFID " is " DFID "\n",
-		       PFID(ll_inode2fid(dir)), PFID(&body->fid1));
+		       PFID(ll_inode2fid(dir)), PFID(&body->mbo_fid1));
+		*parent_fid = body->mbo_fid1;
 	}
-	result = ll_iget_for_nfs(dir->i_sb, &body->fid1, NULL);
 
 	ptlrpc_req_finished(req);
-	return result;
+	return 0;
+}
+
+static struct dentry *ll_get_parent(struct dentry *dchild)
+{
+	struct lu_fid parent_fid = { 0 };
+	struct dentry *dentry;
+	int rc;
+
+	rc = ll_dir_get_parent_fid(dchild->d_inode, &parent_fid);
+	if (rc)
+		return ERR_PTR(rc);
+
+	dentry = ll_iget_for_nfs(dchild->d_inode->i_sb, &parent_fid, NULL);
+
+	return dentry;
 }
 
 const struct export_operations lustre_export_operations = {