add consts where appropriate in fs/nls/*
Add const modifiers to a few struct nls_table's member pointers in
include/linux/nls.h and adds a lot of const's in fs/nls/*.c files.
Resulting changes as visible by size:
text data bss dec hex filename
113612 481216 2368 597196 91ccc nls.org/built-in.o
593548 3296 288 597132 91c8c nls/built-in.o
Apparently compiler managed to optimize code a bit better
because of const-ness.
No other changes are made.
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/nls.h b/include/linux/nls.h
index 816c04a..6a88220 100644
--- a/include/linux/nls.h
+++ b/include/linux/nls.h
@@ -7,13 +7,13 @@
typedef __u16 wchar_t;
struct nls_table {
- char *charset;
- char *alias;
+ const char *charset;
+ const char *alias;
int (*uni2char) (wchar_t uni, unsigned char *out, int boundlen);
int (*char2uni) (const unsigned char *rawstring, int boundlen,
wchar_t *uni);
- unsigned char *charset2lower;
- unsigned char *charset2upper;
+ const unsigned char *charset2lower;
+ const unsigned char *charset2upper;
struct module *owner;
struct nls_table *next;
};