+ hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch added to -mm tree

+ hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch added to -mm tree

[akpm]

The patch titled
     Subject: hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr()
has been added to the -mm tree.  Its filename is
     hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch

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------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: hugetlbfs: remove useless BUG_ON(!inode) in hugetlbfs_setattr()

When we reach here with inode = NULL, we should have crashed as inode has
already been dereferenced via hstate_inode.  So this BUG_ON(!inode) does
not take effect and should be removed.

Link: https://lkml.kernel.org/r/20210118110700.52506-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/hugetlbfs/inode.c |    2 --
 1 file changed, 2 deletions(-)

--- a/fs/hugetlbfs/inode.c~hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr
+++ a/fs/hugetlbfs/inode.c
@@ -760,8 +760,6 @@ static int hugetlbfs_setattr(struct dent
 	unsigned int ia_valid = attr->ia_valid;
 	struct hugetlbfs_inode_info *info = HUGETLBFS_I(inode);
 
-	BUG_ON(!inode);
-
 	error = setattr_prepare(dentry, attr);
 	if (error)
 		return error;
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-hugetlb-fix-potential-double-free-in-hugetlb_register_node-error-path.patch
mm-hugetlb-avoid-unnecessary-hugetlb_acct_memory-call.patch
mm-hugetlb-use-helper-huge_page_order-and-pages_per_huge_page.patch
mm-compaction-remove-duplicated-vm_bug_on_page-pagelocked.patch
hugetlbfs-remove-useless-bug_oninode-in-hugetlbfs_setattr.patch
mm-zsmallocc-convert-to-use-kmem_cache_zalloc-in-cache_alloc_zspage.patch