The patch titled
Subject: mm: gup: remove useless BUG_ON in __get_user_pages()
has been added to the -mm tree. Its filename is
mm-gup-remove-useless-bug_on-in-__get_user_pages.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-gup-remove-useless-bug_on-in-__get_user_pages.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-gup-remove-useless-bug_on-in-__get_user_pages.patch
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------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Cc: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/gup.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/gup.c~mm-gup-remove-useless-bug_on-in-__get_user_pages
+++ a/mm/gup.c
@@ -1149,7 +1149,6 @@ static long __get_user_pages(struct mm_s
* We must stop here.
*/
BUG_ON(gup_flags & FOLL_NOWAIT);
- BUG_ON(ret != 0);
goto out;
}
continue;
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-gup-remove-set-but-unused-local-variable-major.patch
mm-gup-remove-unneed-local-variable-orig_refs.patch
mm-gup-remove-useless-bug_on-in-__get_user_pages.patch
mm-gup-fix-potential-pgmap-refcnt-leak-in-__gup_device_huge.patch
mm-gup-use-helper-page_aligned-in-populate_vma_page_range.patch
mm-vmscan-remove-the-pagedirty-check-after-madv_free-pages-are-page_ref_freezed.patch
mm-vmscan-remove-misleading-setting-to-sc-priority.patch
mm-vmscan-remove-unneeded-return-value-of-kswapd_run.patch
mm-vmscan-add-else-to-remove-check_pending-label.patch
mm-vmstat-correct-some-wrong-comments.patch
mm-vmstat-simplify-the-array-size-calculation.patch
mm-vmstat-remove-unneeded-return-value.patch
mm-zsmallocc-close-race-window-between-zs_pool_dec_isolated-and-zs_unregister_migration.patch
mm-zsmallocc-combine-two-atomic-ops-in-zs_pool_dec_isolated.patch
