The patch titled
smaps: use ptep_test_and_clear_young
has been removed from the -mm tree. Its filename was
smaps-use-ptep_test_and_clear_young.patch
This patch was dropped because it was folded into smaps-add-clear_refs-file-to-clear-reference.patch
------------------------------------------------------
Subject: smaps: use ptep_test_and_clear_young
From: David Rientjes <rientjes@xxxxxxxxxx>
Use arch-specified ptep_test_and_clear_young() to clear the pte accessed
bits for /proc/pid/clear_refs. This avoids a race condition if a pte is
modified between pte_mkold() and set_pte_at().
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/task_mmu.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff -puN fs/proc/task_mmu.c~smaps-use-ptep_test_and_clear_young fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~smaps-use-ptep_test_and_clear_young
+++ a/fs/proc/task_mmu.c
@@ -273,10 +273,7 @@ static void clear_refs_pte_range(struct
continue;
/* Clear accessed and referenced bits. */
- if (pte_young(ptent)) {
- ptent = pte_mkold(ptent);
- set_pte_at(vma->vm_mm, addr, pte, ptent);
- }
+ ptep_test_and_clear_young(vma, addr, pte);
ClearPageReferenced(page);
}
pte_unmap_unlock(pte - 1, ptl);
_
Patches currently in -mm which might be from rientjes@xxxxxxxxxx are
slab-x86_64-skip-cache_free_alien-on-non-numa.patch
i386-add-ptep_test_and_clear_dirtyyoung.patch
i386-use-pte_update_defer-in-ptep_test_and_clear_dirtyyoung.patch
smaps-extract-pmd-walker-from-smaps-code.patch
smaps-add-pages-referenced-count-to-smaps.patch
smaps-add-clear_refs-file-to-clear-reference.patch
smaps-use-ptep_test_and_clear_young.patch
smaps-add-clear_refs-file-to-clear-reference-docs.patch
maps2-uninline-some-functions-in-the-page-walker.patch
maps2-eliminate-the-pmd_walker-struct-in-the-page-walker.patch
maps2-remove-vma-from-args-in-the-page-walker.patch
maps2-propagate-errors-from-callback-in-page-walker.patch
maps2-add-callbacks-for-each-level-to-page-walker.patch
maps2-move-the-page-walker-code-to-lib.patch
maps2-move-the-page-walker-code-to-lib-fix.patch
maps2-simplify-interdependence-of-proc-pid-maps-and-smaps.patch
maps2-move-clear_refs-code-to-task_mmuc.patch
maps2-regroup-task_mmu-by-interface.patch
maps2-make-proc-pid-smaps-optional-under-config_embedded.patch
maps2-make-proc-pid-clear_refs-option-under-config_embedded.patch
maps2-add-proc-pid-pagemap-interface.patch
maps2-add-proc-kpagemap-interface.patch
cpusets-allow-tif_memdie-threads-to-allocate-anywhere.patch
mm-fix-handling-of-panic_on_oom-when-cpusets-are-in-use.patch
oom-fix-constraint-deadlock.patch
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