2 files changed, 25 insertions, 2 deletions

diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index edd248367b36..dbd91461853c 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -6,7 +6,9 @@ and sync so that events like out of disk space get reported properly on
 cached files. Fix setxattr failure to certain Samba versions. Fix mount
 of second share to disconnected server session (autoreconnect on this).
 Add ability to modify cifs acls for handling chmod (when mounted with
-cifsacl flag).
+cifsacl flag). Fix prefixpath path separator so we can handle mounts
+with prefixpaths longer than one directory (one path component) when
+mounted to Windows servers.
 
 Version 1.51
 ------------
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 5ccd8b710cc5..e111c69139b7 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -1791,6 +1791,20 @@ void reset_cifs_unix_caps(int xid, struct cifsTconInfo *tcon,
         }
 }
 
+static void
+convert_delimiter(char *path, char delim)
+{
+        int i;
+
+        if (path == NULL)
+                return;
+
+        for (i = 0; path[i] != '\0'; i++) {
+                if ((path[i] == '/') || (path[i] == '\\'))
+                        path[i] = delim;
+        }
+}
+
 int
 cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
            char *mount_data, const char *devname)
@@ -2056,7 +2070,11 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                 cifs_sb->prepath = volume_info.prepath;
                 if (cifs_sb->prepath) {
                         cifs_sb->prepathlen = strlen(cifs_sb->prepath);
-                        cifs_sb->prepath[0] = CIFS_DIR_SEP(cifs_sb);
+                        /* we can not convert the / to \ in the path
+                        separators in the prefixpath yet because we do not
+                        know (until reset_cifs_unix_caps is called later)
+                        whether POSIX PATH CAP is available. We normalize
+                        the / to \ after reset_cifs_unix_caps is called */
                         volume_info.prepath = NULL;
                 } else
                         cifs_sb->prepathlen = 0;
@@ -2224,6 +2242,9 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                 else
                         tcon->unix_ext = 0; /* server does not support them */
 
+                /* convert forward to back slashes in prepath here if needed */
+                convert_delimiter(cifs_sb->prepath, CIFS_DIR_SEP(cifs_sb));
+
                 if ((tcon->unix_ext == 0) && (cifs_sb->rsize > (1024 * 127))) {
                         cifs_sb->rsize = 1024 * 127;
                         cFYI(DBG2,