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>

1 files changed, 6 insertions, 6 deletions

diff --git a/fs/nls/nls_ascii.c b/fs/nls/nls_ascii.c
index 6993faea28ac..7020e940f74e 100644
--- a/fs/nls/nls_ascii.c
+++ b/fs/nls/nls_ascii.c
@@ -13,7 +13,7 @@
 #include <linux/nls.h>
 #include <linux/errno.h>
 
-static wchar_t charset2uni[256] = {
+static const wchar_t charset2uni[256] = {
         /* 0x00*/
         0x0000, 0x0001, 0x0002, 0x0003,
         0x0004, 0x0005, 0x0006, 0x0007,
@@ -56,7 +56,7 @@ static wchar_t charset2uni[256] = {
         0x007c, 0x007d, 0x007e, 0x007f,
 };
 
-static unsigned char page00[256] = {
+static const unsigned char page00[256] = {
         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
@@ -75,11 +75,11 @@ static unsigned char page00[256] = {
         0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
 };
 
-static unsigned char *page_uni2charset[256] = {
+static const unsigned char *const page_uni2charset[256] = {
         page00,
 };
 
-static unsigned char charset2lower[256] = {
+static const unsigned char charset2lower[256] = {
         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
@@ -98,7 +98,7 @@ static unsigned char charset2lower[256] = {
         0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, /* 0x78-0x7f */
 };
 
-static unsigned char charset2upper[256] = {
+static const unsigned char charset2upper[256] = {
         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00-0x07 */
         0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, /* 0x08-0x0f */
         0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, /* 0x10-0x17 */
@@ -119,7 +119,7 @@ static unsigned char charset2upper[256] = {
 
 static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
 {
-        unsigned char *uni2charset;
+        const unsigned char *uni2charset;
         unsigned char cl = uni & 0x00ff;
         unsigned char ch = (uni & 0xff00) >> 8;