From: Tejun Heo <tj@kernel.org>
Date: Thu, 4 Sep 2008 07:17:31 +0000 (+0200)
Subject: block: fix duplicate headers for /proc/partitions
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=243294dae09c909c0442c8f04d470b69c3c19d6e;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

block: fix duplicate headers for /proc/partitions

seqf can be started multiple times for a read and the header should be
printed only for the initial one.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/block/genhd.c b/block/genhd.c
index ed926b760ca0..8acaff0154e3 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -697,7 +697,7 @@ static void *show_partition_start(struct seq_file *seqf, loff_t *pos)
 	static void *p;
 
 	p = disk_seqf_start(seqf, pos);
-	if (!IS_ERR(p) && p)
+	if (!IS_ERR(p) && p && !*pos)
 		seq_puts(seqf, "major minor  #blocks  name\n\n");
 	return p;
 }