From: Nanyong Sun <sunnanyong@xxxxxxxxxx>
Subject: khugepaged: selftests: remove debug_cow
The debug_cow attribute had been removed since commit 4958e4d86ecb01 ("mm:
thp: remove debug_cow switch"), so remove it in selftest code too,
otherwise the khugepaged test will fail.
Link: https://lkml.kernel.org/r/20210430051117.400189-1-sunnanyong@xxxxxxxxxx
Fixes: 4958e4d86ecb01 ("mm: thp: remove debug_cow switch")
Signed-off-by: Nanyong Sun <sunnanyong@xxxxxxxxxx>
Cc: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Cc: Zi Yan <ziy@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Shuah Khan <shuah@xxxxxxxxxx>
Cc: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/vm/khugepaged.c | 4 ----
1 file changed, 4 deletions(-)
--- a/tools/testing/selftests/vm/khugepaged.c~khugepaged-selftests-remove-debug_cow
+++ a/tools/testing/selftests/vm/khugepaged.c
@@ -86,7 +86,6 @@ struct settings {
enum thp_enabled thp_enabled;
enum thp_defrag thp_defrag;
enum shmem_enabled shmem_enabled;
- bool debug_cow;
bool use_zero_page;
struct khugepaged_settings khugepaged;
};
@@ -95,7 +94,6 @@ static struct settings default_settings
.thp_enabled = THP_MADVISE,
.thp_defrag = THP_DEFRAG_ALWAYS,
.shmem_enabled = SHMEM_NEVER,
- .debug_cow = 0,
.use_zero_page = 0,
.khugepaged = {
.defrag = 1,
@@ -268,7 +266,6 @@ static void write_settings(struct settin
write_string("defrag", thp_defrag_strings[settings->thp_defrag]);
write_string("shmem_enabled",
shmem_enabled_strings[settings->shmem_enabled]);
- write_num("debug_cow", settings->debug_cow);
write_num("use_zero_page", settings->use_zero_page);
write_num("khugepaged/defrag", khugepaged->defrag);
@@ -304,7 +301,6 @@ static void save_settings(void)
.thp_defrag = read_string("defrag", thp_defrag_strings),
.shmem_enabled =
read_string("shmem_enabled", shmem_enabled_strings),
- .debug_cow = read_num("debug_cow"),
.use_zero_page = read_num("use_zero_page"),
};
saved_settings.khugepaged = (struct khugepaged_settings) {
_
