On 4/10/21 12:23 AM, Miaohe Lin wrote: > The resv_map could be NULL since this routine can be called in the evict > inode path for all hugetlbfs inodes and we will have chg = 0 in this case. > But (chg - freed) won't go negative as Mike pointed out: > > "If resv_map is NULL, then no hugetlb pages can be allocated/associated > with the file. As a result, remove_inode_hugepages will never find any > huge pages associated with the inode and the passed value 'freed' will > always be zero." > > Add a comment clarifying this to make it clear and also avoid confusion. > > Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Thanks, Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx> -- Mike Kravetz
