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authorWei Yang <richard.weiyang@linux.alibaba.com>2020-10-13 16:56:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 18:38:34 -0700
commita1ddc2e8250eb550733a3f257ea299a84492d8a7 (patch)
treeb16ae8fa446f54e5737ec954c6ee280cf7a4c563
parent7db5e7b67e3e8d7aa96beb2a4551d211b76a05ba (diff)
downloadlinux-media-a1ddc2e8250eb550733a3f257ea299a84492d8a7.tar.gz
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. Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Link: https://lkml.kernel.org/r/20200831022351.20916-3-richard.weiyang@linux.alibaba.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/hugetlb.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index dc2977750e853..39f86bbcb07e1 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -240,7 +240,6 @@ get_file_region_entry_from_cache(struct resv_map *resv, long from, long to)
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;