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mm: gup: remove useless BUG_ON in __get_user_pages() 

Indeed, this BUG_ON couldn't catch anything useful.  We are sure ret == 0
here because we would already bail out if ret != 0 and ret is untouched
till here.

Link: https://lkml.kernel.org/r/20210807093620.21347-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2021-09-02 14:53:39 -07:00 committed by Linus Torvalds
parent 0fef147ba7
commit 06a9e69663
1 changed files with 0 additions and 1 deletions
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mm/gup.c
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@ -1149,7 +1149,6 @@ static long __get_user_pages(struct mm_struct *mm,
* We must stop here.
*/
BUG_ON(gup_flags & FOLL_NOWAIT);
BUG_ON(ret != 0);
goto out;
}
continue;