exfat: Simplify exfat_utf8_d_cmp() for code points above U+FFFF (197298a6) · Commits · 戴 / test

If two Unicode code points represented in UTF-16 are different then also their UTF-32 representation must be different. Therefore conversion from UTF-32 to UTF-16 is not needed. Signed-off-by:

Pali Rohár <pali@kernel.org> Signed-off-by:

Namjae Jeon <namjae.jeon@samsung.com>

fs/exfat/namei.c

+2 −7

Original line number	Diff line number	Diff line
		@@ -185,13 +185,8 @@ static int exfat_utf8_d_cmp(const struct dentry *dentry, unsigned int len,
		if (u_a <= 0xFFFF && u_b <= 0xFFFF) {
		if (exfat_toupper(sb, u_a) != exfat_toupper(sb, u_b))
		return 1;
		} else if (u_a > 0xFFFF && u_b > 0xFFFF) {
		if (exfat_low_surrogate(u_a) !=
		exfat_low_surrogate(u_b) \|\|
		exfat_high_surrogate(u_a) !=
		exfat_high_surrogate(u_b))
		return 1;
		} else {
		if (u_a != u_b)
		return 1;
		}
		}

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