proc: fix smaps and meminfo alignment

The 4.17-rc /proc/meminfo and /proc/<pid>/smaps look ugly: single-digit
numbers (commonly 0) are misaligned.

Remove seq_put_decimal_ull_width()'s leftover optimization for single
digits: it's wrong now that num_to_str() takes care of the width.

Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1805241554210.1326@eggly.anvils
Fixes: d1be35cb6f96 ("proc: add seq_put_decimal_ull_width to speed up /proc/pid/smaps")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Andrei Vagin <avagin@openvz.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/fs/seq_file.c b/fs/seq_file.c
index c6c27f1f9c9850634700e4898adae6ab7755e113..4cc090b50cc528a2185a567656f835790e0f09bc 100644 (file)
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -709,11 +709,6 @@ void seq_put_decimal_ull_width(struct seq_file *m, const char *delimiter,
        if (m->count + width >= m->size)
                goto overflow;
 
        if (m->count + width >= m->size)
                goto overflow;
 

-       if (num < 10) {
-               m->buf[m->count++] = num + '0';
-               return;
-       }
-

        len = num_to_str(m->buf + m->count, m->size - m->count, num, width);
        if (!len)
                goto overflow;
        len = num_to_str(m->buf + m->count, m->size - m->count, num, width);
        if (!len)
                goto overflow;