From: Omar Sandoval <osandov@fb.com>
Date: Tue, 4 Aug 2020 18:38:28 +0000 (-0700)
Subject: block/012: add comment explaning second --setro
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=832abd6e0e8bbdfee2c5bfd8e195fd520b4d01e4;p=users%2Fsagi%2Fblktests.git

block/012: add comment explaning second --setro

Closes #73.

Signed-off-by: Omar Sandoval <osandov@fb.com>
---

diff --git a/tests/block/012 b/tests/block/012
index 3b0bed5..c92f5b4 100755
--- a/tests/block/012
+++ b/tests/block/012
@@ -20,6 +20,7 @@ test_device() {
 	xfs_io -c "pwrite -w -S 0xaa -b 2M 0 2M" -d "$TEST_DEV" >>"$FULL"
 	dd if="$TEST_DEV" bs=2M count=1 2>>"$FULL" | hexdump
 	blockdev --setro "$TEST_DEV"
+	# It is valid to set a device that is already read-only to read-only.
 	blockdev --setro "$TEST_DEV"
 	blockdev --getro "$TEST_DEV"
 	# writes should fail while device is read-only