lib/string_helpers: rename "esc" arg to "only"

To further clarify the purpose of the "esc" argument, rename it to "only"
to reflect that it is a limit, not a list of additional characters to
escape.

Signed-off-by: Kees Cook <keescook@chromium.org>
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h
index 71f711d..dabe643 100644
--- a/include/linux/string_helpers.h
+++ b/include/linux/string_helpers.h
@@ -48,24 +48,24 @@
 #define ESCAPE_HEX		0x20
 
 int string_escape_mem(const char *src, size_t isz, char *dst, size_t osz,
-		unsigned int flags, const char *esc);
+		unsigned int flags, const char *only);
 
 static inline int string_escape_mem_any_np(const char *src, size_t isz,
-		char *dst, size_t osz, const char *esc)
+		char *dst, size_t osz, const char *only)
 {
-	return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, esc);
+	return string_escape_mem(src, isz, dst, osz, ESCAPE_ANY_NP, only);
 }
 
 static inline int string_escape_str(const char *src, char *dst, size_t sz,
-		unsigned int flags, const char *esc)
+		unsigned int flags, const char *only)
 {
-	return string_escape_mem(src, strlen(src), dst, sz, flags, esc);
+	return string_escape_mem(src, strlen(src), dst, sz, flags, only);
 }
 
 static inline int string_escape_str_any_np(const char *src, char *dst,
-		size_t sz, const char *esc)
+		size_t sz, const char *only)
 {
-	return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, esc);
+	return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only);
 }
 
 #endif