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authorLai Jiangshan <laijs@cn.fujitsu.com>2008-10-18 20:28:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:52:39 -0700
commit85dd030edb174376ef43bc95e5fae4755af1ec98 (patch)
tree60e0ca69da813ce50dacdc9fdfe9597e33ac6119 /fs/seq_file.c
parent40b6a76237563c70466ec7315f644ba87d57dbe5 (diff)
downloadlinux-85dd030edb174376ef43bc95e5fae4755af1ec98.tar.gz
seq_file: don't call bitmap_scnprintf_len()
"m->count + len < m->size" is true commonly, so bitmap_scnprintf() is commonly called. this fix saves a call to bitmap_scnprintf_len(). Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Paul Menage <menage@google.com> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/seq_file.c')
-rw-r--r--fs/seq_file.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/fs/seq_file.c b/fs/seq_file.c
index bd20f7f5a93..11c85fec6b4 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -452,17 +452,18 @@ int seq_dentry(struct seq_file *m, struct dentry *dentry, char *esc)
int seq_bitmap(struct seq_file *m, unsigned long *bits, unsigned int nr_bits)
{
- size_t len = bitmap_scnprintf_len(nr_bits);
-
- if (m->count + len < m->size) {
- bitmap_scnprintf(m->buf + m->count, m->size - m->count,
- bits, nr_bits);
- m->count += len;
- return 0;
+ if (m->count < m->size) {
+ int len = bitmap_scnprintf(m->buf + m->count,
+ m->size - m->count, bits, nr_bits);
+ if (m->count + len < m->size) {
+ m->count += len;
+ return 0;
+ }
}
m->count = m->size;
return -1;
}
+EXPORT_SYMBOL(seq_bitmap);
static void *single_start(struct seq_file *p, loff_t *pos)
{