[PATCH] fat: Manually inline shortname_info_to_lcase()

From <lsr@neapel230.server4you.de>

This patch inlines shortname_info_to_lcase() by hand.  At least my compiler
(gcc 3.3.4 from Debian) doesn't go all the way, so the compiled text size is
decreased by this patch.  And IMHO the code gets more readable, too.

The terms (base->valid && ext->valid), (ext->lower || ext->upper) and
(base->lower || base->upper) are trivially found to be true at the single
callsite of shortname_info_to_lcase().  The relevant lines are included in
this patch file.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

fs/vfat/namei.c

@@ -259,22 +259,6 @@ struct shortname_info {
 	(x)->valid = 1;				\
 } while (0)
 
-static inline unsigned char
-shortname_info_to_lcase(struct shortname_info *base,
-			struct shortname_info *ext)
-{
-	unsigned char lcase = 0;
-
-	if (base->valid && ext->valid) {
-		if (!base->upper && base->lower && (ext->lower || ext->upper))
-			lcase |= CASE_LOWER_BASE;
-		if (!ext->upper && ext->lower && (base->lower || base->upper))
-			lcase |= CASE_LOWER_EXT;
-	}
-
-	return lcase;
-}
-
 static inline int to_shortname_char(struct nls_table *nls,
 				    unsigned char *buf, int buf_size, wchar_t *src,
 				    struct shortname_info *info)
@@ -452,10 +436,12 @@ static int vfat_create_shortname(struct inode *dir, struct nls_table *nls,
 		if (opt_shortname & VFAT_SFN_CREATE_WIN95) {
 			return (base_info.upper && ext_info.upper);
 		} else if (opt_shortname & VFAT_SFN_CREATE_WINNT) {
-			if ((base_info.upper || base_info.lower)
-			    && (ext_info.upper || ext_info.lower)) {
-				*lcase = shortname_info_to_lcase(&base_info,
-								 &ext_info);
+			if ((base_info.upper || base_info.lower) &&
+			    (ext_info.upper || ext_info.lower)) {
+				if (!base_info.upper && base_info.lower)
+					*lcase |= CASE_LOWER_BASE;
+				if (!ext_info.upper && ext_info.lower)
+					*lcase |= CASE_LOWER_EXT;
 				return 1;
 			}
 			return 0;