1 files changed, 12 insertions, 4 deletions

diff --git a/arch/um/os-Linux/mem.c b/arch/um/os-Linux/mem.c
index 4203681e508d..f1ea169db85e 100644
--- a/arch/um/os-Linux/mem.c
+++ b/arch/um/os-Linux/mem.c
@@ -20,7 +20,13 @@
 
 #include <sys/param.h>
 
+/* Modified by which_tmpdir, which is called during early boot */
 static char *default_tmpdir = "/tmp";
+
+/*
+ *  Modified when creating the physical memory file and when checking
+ * the tmp filesystem for usability, both happening during early boot.
+ */
 static char *tempdir = NULL;
 
 static void __init find_tempdir(void)
@@ -29,7 +35,8 @@ static void __init find_tempdir(void)
         int i;
         char *dir = NULL;
 
-        if(tempdir != NULL) return;     /* We've already been called */
+        if(tempdir != NULL) /* We've already been called */
+                return;
         for(i = 0; dirs[i]; i++){
                 dir = getenv(dirs[i]);
                 if((dir != NULL) && (*dir != '\0'))
@@ -83,6 +90,7 @@ static int next(int fd, char *buf, int size, char c)
         return 1;
 }
 
+/* which_tmpdir is called only during early boot */
 static int checked_tmpdir = 0;
 
 /* Look for a tmpfs mounted at /dev/shm.  I couldn't find a cleaner
@@ -186,7 +194,7 @@ int make_tempfile(const char *template, char **out_tempname, int do_unlink)
         } else {
                 free(tempname);
         }
-        return(fd);
+        return fd;
 out:
         free(tempname);
         return -1;
@@ -231,7 +239,7 @@ int create_tmp_file(unsigned long long len)
                 exit(1);
         }
 
-        return(fd);
+        return fd;
 }
 
 int create_mem_file(unsigned long long len)
@@ -245,7 +253,7 @@ int create_mem_file(unsigned long long len)
                 errno = -err;
                 perror("exec_close");
         }
-        return(fd);
+        return fd;
 }