[PATCH v2 0/2] KSM: use linear_page_index in collect_procs_ksm()

[xu.xin16]

From: xu xin <xu.xin16@xxxxxxxxxx>

In collect_procs_ksm() which is used to collect processes when the error
hit an ksm page, there is the same issue with rmap_walk_ksm (see the
previous discussion at [1]). So we apply the similar logic changes to
the collect_procs_ksm().

The patch [1/2] move the initializaion of addr from the position inside
loop to the position before the loop, since the variable will not change
in the loop.

The patch [2/2] optimize collect_procs_ksm by passing a suitable page offset
range to the anon_vma_interval_tree_foreach loop to reduce ineffective
checks.

[1] https://lore.kernel.org/all/20260703162253688u8Str9eFLR8TGCmo7nIOF@xxxxxxxxxx/

xu xin (2):
  mm/ksm: Initialize the addr only once in collect_procs_ksm
  ksm: Use precise linear_page_index instead of the whole address space

 mm/ksm.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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2.25.1