diff options
author | André Goddard Rosa <andre.goddard@gmail.com> | 2009-12-14 21:01:06 -0500 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-15 11:53:32 -0500 |
commit | e7d2860b690d4f3bed6824757c540579638e3d1e (patch) | |
tree | 84268ee28893256fd6a6a7e1d4474f61dbee74e7 /fs/ext4/super.c | |
parent | 84c95c9acf088c99d8793d78036b67faa5d0b851 (diff) |
tree-wide: convert open calls to remove spaces to skip_spaces() lib function
Makes use of skip_spaces() defined in lib/string.c for removing leading
spaces from strings all over the tree.
It decreases lib.a code size by 47 bytes and reuses the function tree-wide:
text data bss dec hex filename
64688 584 592 65864 10148 (TOTALS-BEFORE)
64641 584 592 65817 10119 (TOTALS-AFTER)
Also, while at it, if we see (*str && isspace(*str)), we can be sure to
remove the first condition (*str) as the second one (isspace(*str)) also
evaluates to 0 whenever *str == 0, making it redundant. In other words,
"a char equals zero is never a space".
Julia Lawall tried the semantic patch (http://coccinelle.lip6.fr) below,
and found occurrences of this pattern on 3 more files:
drivers/leds/led-class.c
drivers/leds/ledtrig-timer.c
drivers/video/output.c
@@
expression str;
@@
( // ignore skip_spaces cases
while (*str && isspace(*str)) { \(str++;\|++str;\) }
|
- *str &&
isspace(*str)
)
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Cc: Julia Lawall <julia@diku.dk>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Neil Brown <neilb@suse.de>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: David Howells <dhowells@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Samuel Ortiz <samuel@sortiz.org>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext4/super.c')
-rw-r--r-- | fs/ext4/super.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 768c111a77ec..827bde1f2594 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c | |||
@@ -2137,11 +2137,8 @@ static int parse_strtoul(const char *buf, | |||
2137 | { | 2137 | { |
2138 | char *endp; | 2138 | char *endp; |
2139 | 2139 | ||
2140 | while (*buf && isspace(*buf)) | 2140 | *value = simple_strtoul(skip_spaces(buf), &endp, 0); |
2141 | buf++; | 2141 | endp = skip_spaces(endp); |
2142 | *value = simple_strtoul(buf, &endp, 0); | ||
2143 | while (*endp && isspace(*endp)) | ||
2144 | endp++; | ||
2145 | if (*endp || *value > max) | 2142 | if (*endp || *value > max) |
2146 | return -EINVAL; | 2143 | return -EINVAL; |
2147 | 2144 | ||