From b3dd06bbd9fd4e2a156cb5eb75ab9d29df05e726 Mon Sep 17 00:00:00 2001
From: Yi Zhang <yi.zhang@redhat.com>
Date: Mon, 30 Mar 2026 23:07:03 -0400
Subject: [PATCH] common/rc: introduce _page_size_equals helper to skip
 incompatible tests

Introduce a new helper function `_get_page_size` to get system page size, and
`_page_size_equals()` to check the whether system page size equal one value.
 Update `scsi/011` and `zbd/010` to use this helper and gracefully skip the
tests if the page size is not 4096 bytes. This prevents test failures on non-4K
page architectures.

Fixes: https://github.com/linux-blktests/blktests/issues/234
Suggested-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Yi Zhang <yi.zhang@redhat.com>
---
 common/rc      | 25 +++++++++++++++++++++++++
 tests/scsi/011 |  1 +
 tests/zbd/010  |  1 +
 3 files changed, 27 insertions(+)

diff --git a/common/rc b/common/rc
index 0a8caca0..5350057b 100644
--- a/common/rc
+++ b/common/rc
@@ -552,6 +552,31 @@ _have_systemctl_unit() {
 	return 0
 }
 
+# Get system page size from kernel conguration
+_get_page_size() {
+	local page_shift
+
+	page_shift=$(_get_kernel_option PAGE_SHIFT)
+
+	echo $((1<< page_shift))
+}
+
+# Check if the system page size matches the required size (in bytes).
+# Example: _page_size_equals 4096
+_page_size_equals() {
+	local required_size="$1"
+	local current_size
+
+	current_size=$(_get_page_size)
+
+	if [ "$current_size" -ne "$required_size" ]; then
+		SKIP_REASONS+=("This test requires ${required_size} bytes page size, but system has ${current_size} bytes")
+		return 1
+	fi
+
+	return 0
+}
+
 _systemctl_start() {
 	local unit="$1"
 
diff --git a/tests/scsi/011 b/tests/scsi/011
index a96b7e68..267c8a0d 100755
--- a/tests/scsi/011
+++ b/tests/scsi/011
@@ -17,6 +17,7 @@ requires() {
 	_have_kver 6 10
 	_have_program mkfs.f2fs
 	_have_scsi_debug_group_number_stats
+	_page_size_equals 4096
 }
 
 run_test() {
diff --git a/tests/zbd/010 b/tests/zbd/010
index c5cb76a0..6b92c346 100755
--- a/tests/zbd/010
+++ b/tests/zbd/010
@@ -16,6 +16,7 @@ requires() {
 	_have_module_param scsi_debug zone_cap_mb
 	_have_program mkfs.f2fs
 	_have_module scsi_debug
+	_page_size_equals 4096
 }
 
 test() {