Since size_t has the same size as a long on all architectures, it's enough
for overflow checks to check against ULONG_MAX.
This change could allow a compiler better optimization (especially in the
n=1 case).
The practical effect seems to be positive, but quite small:
text data bss dec hex filename
21762380 5859870 1848928 29471178 1c1b1ca vmlinux-old
21762211 5859870 1848928 29471009 1c1b121 vmlinux-patched
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
b50ec7d807