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Date: Wed, 10 Sep 2014 13:20:19 +0400 From: Dmitry Voytik <voytikd@...il.com> To: Alexander Viro <viro@...iv.linux.org.uk> Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>, linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, Dmitry Voytik <voytikd@...il.com> Subject: [PATCH] fs: seq_file: optimize seq_pad() Use seq_putc() instead of seq_printf() in seq_pad() because the former is faster. Signed-off-by: Dmitry Voytik <voytikd@...il.com> --- fs/seq_file.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/seq_file.c b/fs/seq_file.c index 3857b72..fef338e 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -787,8 +787,10 @@ EXPORT_SYMBOL(seq_write); void seq_pad(struct seq_file *m, char c) { int size = m->pad_until - m->count; - if (size > 0) - seq_printf(m, "%*s", size, ""); + + while (size-- > 0) + if (unlikely(seq_putc(m, ' '))) + return; if (c) seq_putc(m, c); } -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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