Merge git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fixes from Steve French.

* git://git.samba.org/sfrench/cifs-2.6:
  fs/cifs: fix parsing of dfs referrals
  cifs: make sure we ignore the credentials= and cred= options
  [CIFS] Update cifs version to 1.78
  cifs - check S_AUTOMOUNT in revalidate
  cifs: add missing initialization of server->req_lock
  cifs: don't cap ra_pages at the same level as default_backing_dev_info
  CIFS: Fix indentation in cifs_show_options

Author: torvalds

fs/cifs/cifsfs.c

@@ -442,7 +442,7 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
 	seq_printf(s, ",rsize=%u", cifs_sb->rsize);
 	seq_printf(s, ",wsize=%u", cifs_sb->wsize);
 	/* convert actimeo and display it in seconds */
-		seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ);
+	seq_printf(s, ",actimeo=%lu", cifs_sb->actimeo / HZ);
 
 	return 0;
 }

fs/cifs/cifsfs.h

@@ -125,5 +125,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 extern const struct export_operations cifs_export_ops;
 #endif /* CONFIG_CIFS_NFSD_EXPORT */
 
-#define CIFS_VERSION   "1.77"
+#define CIFS_VERSION   "1.78"
 #endif				/* _CIFSFS_H */

fs/cifs/cifssmb.c

@@ -4844,8 +4844,12 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
 		max_len = data_end - temp;
 		node->node_name = cifs_strndup_from_utf16(temp, max_len,
 						is_unicode, nls_codepage);
-		if (!node->node_name)
+		if (!node->node_name) {
 			rc = -ENOMEM;
+			goto parse_DFS_referrals_exit;
+		}
+
+		ref++;
 	}
 
 parse_DFS_referrals_exit:

fs/cifs/connect.c

@@ -215,6 +215,8 @@ static const match_table_t cifs_mount_option_tokens = {
 
 	{ Opt_ignore, "cred" },
 	{ Opt_ignore, "credentials" },
+	{ Opt_ignore, "cred=%s" },
+	{ Opt_ignore, "credentials=%s" },
 	{ Opt_ignore, "guest" },
 	{ Opt_ignore, "rw" },
 	{ Opt_ignore, "ro" },
@@ -2183,6 +2185,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
 	tcp_ses->session_estab = false;
 	tcp_ses->sequence_number = 0;
 	tcp_ses->lstrp = jiffies;
+	spin_lock_init(&tcp_ses->req_lock);
 	INIT_LIST_HEAD(&tcp_ses->tcp_ses_list);
 	INIT_LIST_HEAD(&tcp_ses->smb_ses_list);
 	INIT_DELAYED_WORK(&tcp_ses->echo, cifs_echo_request);
@@ -3614,22 +3617,6 @@ cifs_get_volume_info(char *mount_data, const char *devname)
 	return volume_info;
 }
 
-/* make sure ra_pages is a multiple of rsize */
-static inline unsigned int
-cifs_ra_pages(struct cifs_sb_info *cifs_sb)
-{
-	unsigned int reads;
-	unsigned int rsize_pages = cifs_sb->rsize / PAGE_CACHE_SIZE;
-
-	if (rsize_pages >= default_backing_dev_info.ra_pages)
-		return default_backing_dev_info.ra_pages;
-	else if (rsize_pages == 0)
-		return rsize_pages;
-
-	reads = default_backing_dev_info.ra_pages / rsize_pages;
-	return reads * rsize_pages;
-}
-
 int
 cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info)
 {
@@ -3717,7 +3704,7 @@ cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *volume_info)
 	cifs_sb->rsize = cifs_negotiate_rsize(tcon, volume_info);
 
 	/* tune readahead according to rsize */
-	cifs_sb->bdi.ra_pages = cifs_ra_pages(cifs_sb);
+	cifs_sb->bdi.ra_pages = cifs_sb->rsize / PAGE_CACHE_SIZE;
 
 remote_path_check:
 #ifdef CONFIG_CIFS_DFS_UPCALL

fs/cifs/dir.c

@@ -668,12 +668,19 @@ cifs_d_revalidate(struct dentry *direntry, struct nameidata *nd)
 			return 0;
 		else {
 			/*
-			 * Forcibly invalidate automounting directory inodes
-			 * (remote DFS directories) so to have them
-			 * instantiated again for automount
+			 * If the inode wasn't known to be a dfs entry when
+			 * the dentry was instantiated, such as when created
+			 * via ->readdir(), it needs to be set now since the
+			 * attributes will have been updated by
+			 * cifs_revalidate_dentry().
 			 */
-			if (IS_AUTOMOUNT(direntry->d_inode))
-				return 0;
+			if (IS_AUTOMOUNT(direntry->d_inode) &&
+			   !(direntry->d_flags & DCACHE_NEED_AUTOMOUNT)) {
+				spin_lock(&direntry->d_lock);
+				direntry->d_flags |= DCACHE_NEED_AUTOMOUNT;
+				spin_unlock(&direntry->d_lock);
+			}
+
 			return 1;
 		}
 	}