Re: [PATCH 2/5] test_printf: Assign all flags to page_flags

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On 10/13/21 2:55 PM, Kirill A. Shutemov wrote:
> On Tue, Oct 12, 2021 at 07:26:44PM +0100, Matthew Wilcox (Oracle) wrote:
>> Even unknown flags should be passed to %pGp so that we can test what it
>> does with them (today: nothing).
>>
>> Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
>> ---
>>  lib/test_printf.c | 6 ++----
>>  1 file changed, 2 insertions(+), 4 deletions(-)
>>
>> diff --git a/lib/test_printf.c b/lib/test_printf.c
>> index a52c1c3a55ba..f744b0498672 100644
>> --- a/lib/test_printf.c
>> +++ b/lib/test_printf.c
>> @@ -608,14 +608,12 @@ page_flags_test(int section, int node, int zone, int last_cpupid,
>>  		int kasan_tag, int flags, const char *name, char *cmp_buf)
>>  {
>>  	unsigned long values[] = {section, node, zone, last_cpupid, kasan_tag};
>> -	unsigned long page_flags = 0;
>> +	unsigned long page_flags = flags;
>>  	unsigned long size = 0;
>>  	bool append = false;
>>  	int i;
>>  
>> -	flags &= PAGEFLAGS_MASK;
>> -	if (flags) {
>> -		page_flags |= flags;
>> +	if (flags & PAGEFLAGS_MASK) {
>>  		snprintf(cmp_buf + size, BUF_SIZE - size, "%s", name);
>>  		size = strlen(cmp_buf);
>>  #if SECTIONS_WIDTH || NODES_WIDTH || ZONES_WIDTH || \
> 
> Do we even need 'page_flags'? Can't we do everything on 'flags' directly?

Agreed, +1. Otherwise the change LGTM.




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