The patch titled
Subject: mm, thp: use list_first_entry_or_null()
has been added to the -mm tree. Its filename is
mm-thp-use-list_first_entry_or_null.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-thp-use-list_first_entry_or_null.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-thp-use-list_first_entry_or_null.patch
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------------------------------------------------------
From: Geliang Tang <geliangtang@xxxxxxx>
Subject: mm, thp: use list_first_entry_or_null()
Simplify the code with list_first_entry_or_null().
Signed-off-by: Geliang Tang <geliangtang@xxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/pgtable-generic.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff -puN mm/pgtable-generic.c~mm-thp-use-list_first_entry_or_null mm/pgtable-generic.c
--- a/mm/pgtable-generic.c~mm-thp-use-list_first_entry_or_null
+++ a/mm/pgtable-generic.c
@@ -176,13 +176,10 @@ pgtable_t pgtable_trans_huge_withdraw(st
/* FIFO */
pgtable = pmd_huge_pte(mm, pmdp);
- if (list_empty(&pgtable->lru))
- pmd_huge_pte(mm, pmdp) = NULL;
- else {
- pmd_huge_pte(mm, pmdp) = list_entry(pgtable->lru.next,
- struct page, lru);
+ pmd_huge_pte(mm, pmdp) = list_first_entry_or_null(&pgtable->lru,
+ struct page, lru);
+ if (pmd_huge_pte(mm, pmdp))
list_del(&pgtable->lru);
- }
return pgtable;
}
#endif
_
Patches currently in -mm which might be from geliangtang@xxxxxxx are
fsnotify-use-list_next_entry-in-fsnotify_unmount_inodes.patch
mm-vmalloc-use-list_nextfirst_entry.patch
mm-thp-use-list_first_entry_or_null.patch
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