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selftests/damon/_debugfs_common: hide expected error message from test_write_result()

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DAMON debugfs interface selftests use test_write_result() to check if
valid or invalid writes to files of the interface success or fail as
expected.  File write error messages from expected failures are only
making the output noisy.  Hide such expected error messages.

Link: https://lkml.kernel.org/r/20241028233058.283381-4-sj@kernel.org
Fixes: b348eb7abd ("mm/damon: add user space selftests")
Signed-off-by: SeongJae Park <sj@kernel.org>
Cc: Andrew Paniakin <apanyaki@amazon.com>
Cc: Brendan Higgins <brendan.higgins@linux.dev>
Cc: David Gow <davidgow@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
SeongJae Park 2024-10-28 16:30:55 -07:00 committed by Andrew Morton
parent e06a6b55ed
commit 82475d111d
1 changed files with 6 additions and 1 deletions
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7
tools/testing/selftests/damon/_debugfs_common.sh
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@ -8,7 +8,12 @@ test_write_result() {
expect_reason=$4
expected=$5
echo "$content" > "$file"
if [ "$expected" = "0" ]
then
echo "$content" > "$file"
else
echo "$content" > "$file" 2> /dev/null
fi
if [ $? -ne "$expected" ]
then
echo "writing $content to $file doesn't return $expected"