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add consts where appropriate in fs/nls/*

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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>
This commit is contained in:
Denys Vlasenko
2007-10-16 23:29:54 -07:00
committed by Linus Torvalds
parent 37c42524d6
commit b9ec0339d8
40 changed files with 1174 additions and 1174 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
fs/nls/nls_base.c
View File

@@ -34,7 +34,7 @@ struct utf8_table {
long lval;
};
static struct utf8_table utf8_table[] =
static const struct utf8_table utf8_table[] =
{
{0x80, 0x00, 0*6, 0x7F, 0, /* 1 byte sequence */},
{0xE0, 0xC0, 1*6, 0x7FF, 0x80, /* 2 byte sequence */},
@@ -50,7 +50,7 @@ utf8_mbtowc(wchar_t *p, const __u8 *s, int n)
{
long l;
int c0, c, nc;
struct utf8_table *t;
const struct utf8_table *t;
nc = 0;
c0 = *s;
@@ -109,7 +109,7 @@ utf8_wctomb(__u8 *s, wchar_t wc, int maxlen)
{
long l;
int c, nc;
struct utf8_table *t;
const struct utf8_table *t;
if (s == 0)
return 0;
@@ -240,7 +240,7 @@ void unload_nls(struct nls_table *nls)
module_put(nls->owner);
}
static wchar_t charset2uni[256] = {
static const wchar_t charset2uni[256] = {
/* 0x00*/
0x0000, 0x0001, 0x0002, 0x0003,
0x0004, 0x0005, 0x0006, 0x0007,
@@ -323,7 +323,7 @@ static wchar_t charset2uni[256] = {
0x00fc, 0x00fd, 0x00fe, 0x00ff,
};
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 */
@@ -359,11 +359,11 @@ static unsigned char page00[256] = {
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
};
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 */
@@ -399,7 +399,7 @@ static unsigned char charset2lower[256] = {
0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff, /* 0xf8-0xff */
};
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 */
@@ -438,7 +438,7 @@ 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;