From 85dd030edb174376ef43bc95e5fae4755af1ec98 Mon Sep 17 00:00:00 2001 From: Lai Jiangshan Date: Sat, 18 Oct 2008 20:28:18 -0700 Subject: [PATCH] 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 Cc: Alexey Dobriyan Cc: Paul Menage Cc: Paul Jackson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/seq_file.c | 15 ++++++++------- 1 file 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) { -- 2.41.1