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SubjectRe: [PATCH] hugetlbfs: show pagesize in unit of GB if possible
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Hi:
On 2021/1/31 6:07, David Rientjes wrote:
> On Sat, 30 Jan 2021, Miaohe Lin wrote:
>
>> Hugepage size in unit of GB is supported. We could show pagesize in unit of
>> GB to make it more friendly to read. Also rework the calculation code of
>> page size unit to make it more readable.
>>
>> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
>> ---
>> fs/hugetlbfs/inode.c | 12 ++++++++----
>> 1 file changed, 8 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
>> index 3a08fbae3b53..40a9795f250a 100644
>> --- a/fs/hugetlbfs/inode.c
>> +++ b/fs/hugetlbfs/inode.c
>> @@ -1014,11 +1014,15 @@ static int hugetlbfs_show_options(struct seq_file *m, struct dentry *root)
>> if (sbinfo->max_inodes != -1)
>> seq_printf(m, ",nr_inodes=%lu", sbinfo->max_inodes);
>>
>> - hpage_size /= 1024;
>> - mod = 'K';
>> - if (hpage_size >= 1024) {
>> - hpage_size /= 1024;
>> + if (hpage_size >= SZ_1G) {
>> + hpage_size /= SZ_1G;
>> + mod = 'G';
>> + } else if (hpage_size >= SZ_1M) {
>> + hpage_size /= SZ_1M;
>> mod = 'M';
>> + } else {
>> + hpage_size /= SZ_1K;
>> + mod = 'K';
>> }
>> seq_printf(m, ",pagesize=%lu%c", hpage_size, mod);
>> if (spool) {
>
> NACK, this can break existing userspace parsing.
> .
>

I see. I should take care of this. Many thanks.

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