From: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx> Subject: mm/hugetlb: remove VM_BUG_ON(!nrg) in get_file_region_entry_from_cache() We are sure to get a valid file_region, otherwise the VM_BUG_ON(resv->region_cache_count <= 0) at the very beginning would be triggered. Let's remove the redundant one. Link: https://lkml.kernel.org/r/20200831022351.20916-3-richard.weiyang@xxxxxxxxxxxxxxxxx Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx> Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Cc: Baoquan He <bhe@xxxxxxxxxx> Cc: Vlastimil Babka <vbabka@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/hugetlb.c | 1 - 1 file changed, 1 deletion(-) --- a/mm/hugetlb.c~mm-hugetlb-remove-vm_bug_onnrg-in-get_file_region_entry_from_cache +++ a/mm/hugetlb.c @@ -240,7 +240,6 @@ get_file_region_entry_from_cache(struct resv->region_cache_count--; nrg = list_first_entry(&resv->region_cache, struct file_region, link); - VM_BUG_ON(!nrg); list_del(&nrg->link); nrg->from = from; _
