diff mbox series

[145/181] mm/hugetlb: remove VM_BUG_ON(!nrg) in get_file_region_entry_from_cache()

Message ID 20201013235623.P9Xo2utZl%akpm@linux-foundation.org (mailing list archive)
State New, archived
Headers show
Series [001/181] compiler-clang: add build check for clang 10.0.1 | expand

Commit Message

Andrew Morton Oct. 13, 2020, 11:56 p.m. UTC 
From: Wei Yang <richard.weiyang@linux.alibaba.com>
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@linux.alibaba.com
Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/hugetlb.c |    1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

--- 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;