ksm: remove redundant VM_BUG_ON_PAGE() on stable_tree_search()

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Patch series "Cleanup and fixup for ksm".

This series contains cleanups to remove unnecessary VM_BUG_ON_PAGE and
dedicated macro KSM_FLAG_MASK.  Also this fixes potential missing
rmap_item for stable_node which would result in failed rmap_walk_ksm().
More details can be found in the respective changelogs.

This patch (of 4):

The same VM_BUG_ON_PAGE() check is already done in the callee.  Remove
these extra caller one to simplify code slightly.

Link: https://lkml.kernel.org/r/20210330140228.45635-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20210330140228.45635-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

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This commit is contained in:

Miaohe Lin 2021-05-04 18:37:37 -07:00 • committed by Linus Torvalds

parent 78fa51503f

commit a08e1e11c9

1 changed files with 0 additions and 2 deletions

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mm/ksm.c

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