+ selftests-ipc-change-operation-not-supported-error-number.patch added to mm-nonmm-unstable branch

The patch titled
     Subject: selftests: ipc: change operation not supported error number
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     selftests-ipc-change-operation-not-supported-error-number.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-ipc-change-operation-not-supported-error-number.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Paul White <[email protected]>
Subject: selftests: ipc: change operation not supported error number
Date: Mon, 20 Jul 2026 16:40:01 -0400

The application doesn't know what ENOTSUPP means, as it is a kernelspace
error code and the application doesn't have access to kernelspace error
codes.I used EOPNOTSUPP in its place as that is an error number the
application will recognize and know an operation is being attempted that
it cannot support.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Paul White <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: Wei Yang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 tools/testing/selftests/ipc/msgque.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/ipc/msgque.c~selftests-ipc-change-operation-not-supported-error-number
+++ a/tools/testing/selftests/ipc/msgque.c
@@ -161,7 +161,7 @@ int dump_queue(struct msgque_data *msgqu
 		ret = msgrcv(msgque->msq_id, &msgque->messages[i].mtype,
 				MAX_MSG_SIZE, i, IPC_NOWAIT | MSG_COPY);
 		if (ret < 0) {
-			if (errno == ENOSYS)
+			if (errno == EOPNOTSUPP)
 				ksft_exit_skip("MSG_COPY not supported\n");
 
 			ksft_test_result_fail("Failed to copy IPC message: %m (%d)\n", errno);
_

Patches currently in -mm which might be from [email protected] are

selftests-ipc-change-operation-not-supported-error-number.patch