From: Ronnie Sahlberg <lsahlber@redhat.com>
Date: Tue, 9 Mar 2021 09:07:27 +1000
Subject: [PATCH] cifs: move the check for nohandlecache into open_shroot
Git-commit: 4df3d976dda2466799929b021d4e233639711d41
References: bsc#1190317
Patch-mainline: v5.13-rc1

instead of doing it in the callsites for open_shroot.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Acked-by: Enzo Matsumiya <ematsumiya@suse.de>
---
 fs/cifs/smb2inode.c | 24 +++++++++++-------------
 fs/cifs/smb2ops.c   | 16 ++++++++--------
 2 files changed, 19 insertions(+), 21 deletions(-)

diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
index a718dc77e604..4b053dfcd428 100644
--- a/fs/cifs/smb2inode.c
+++ b/fs/cifs/smb2inode.c
@@ -512,7 +512,6 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 	int rc;
 	struct smb2_file_all_info *smb2_data;
 	__u32 create_options = 0;
-	bool no_cached_open = tcon->nohandlecache;
 	struct cifsFileInfo *cfile;
 	struct cached_fid *cfid = NULL;
 
@@ -525,23 +524,22 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
 		return -ENOMEM;
 
 	/* If it is a root and its handle is cached then use it */
-	if (!strlen(full_path) && !no_cached_open) {
+	if (!strlen(full_path)) {
 		rc = open_shroot(xid, tcon, cifs_sb, &cfid);
-		if (rc)
-			goto out;
-
-		if (tcon->crfid.file_all_info_is_valid) {
-			move_smb2_info_to_cifs(data,
+		if (!rc) {
+			if (tcon->crfid.file_all_info_is_valid) {
+				move_smb2_info_to_cifs(data,
 					       &tcon->crfid.file_all_info);
-		} else {
-			rc = SMB2_query_info(xid, tcon,
+			} else {
+				rc = SMB2_query_info(xid, tcon,
 					     cfid->fid->persistent_fid,
 					     cfid->fid->volatile_fid, smb2_data);
-			if (!rc)
-				move_smb2_info_to_cifs(data, smb2_data);
+				if (!rc)
+					move_smb2_info_to_cifs(data, smb2_data);
+			}
+			close_shroot(cfid);
+			goto out;
 		}
-		close_shroot(cfid);
-		goto out;
 	}
 
 	cifs_get_readable_path(tcon, full_path, &cfile);
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 65fc65b26d84..079d5027cf75 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -746,6 +746,9 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
 	u8 oplock = SMB2_OPLOCK_LEVEL_II;
 	struct cifs_fid *pfid;
 
+	if (tcon->nohandlecache)
+		return -ENOTSUPP;
+
 	mutex_lock(&tcon->crfid.fid_mutex);
 	if (tcon->crfid.is_valid) {
 		cifs_dbg(FYI, "found a cached root file handle\n");
@@ -914,7 +917,6 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
 	u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
 	struct cifs_open_parms oparms;
 	struct cifs_fid fid;
-	bool no_cached_open = tcon->nohandlecache;
 	struct cached_fid *cfid = NULL;
 
 	oparms.tcon = tcon;
@@ -924,14 +926,12 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
 	oparms.fid = &fid;
 	oparms.reconnect = false;
 
-	if (no_cached_open) {
+	rc = open_shroot(xid, tcon, cifs_sb, &cfid);
+	if (rc == 0)
+		memcpy(&fid, cfid->fid, sizeof(struct cifs_fid));
+	else
 		rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
 			       NULL, NULL);
-	} else {
-		rc = open_shroot(xid, tcon, cifs_sb, &cfid);
-		if (rc == 0)
-			memcpy(&fid, cfid->fid, sizeof(struct cifs_fid));
-	}
 	if (rc)
 		return;
 
@@ -945,7 +945,7 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
 			FS_VOLUME_INFORMATION);
 	SMB2_QFS_attr(xid, tcon, fid.persistent_fid, fid.volatile_fid,
 			FS_SECTOR_SIZE_INFORMATION); /* SMB3 specific */
-	if (no_cached_open)
+	if (cfid == NULL)
 		SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
 	else
 		close_shroot(cfid);
-- 
2.33.0