The patch titled
Subject: pagemap: remove remaining unneeded spin_lock()
has been removed from the -mm tree. Its filename was
pagemap-remove-remaining-unneeded-spin_lock.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Subject: pagemap: remove remaining unneeded spin_lock()
commit: 025c5b2451e4 ("thp: optimize away unnecessary page table locking")
moves spin_lock() into pmd_trans_huge_lock() in order to avoid locking
unless pmd is for thp. So this spin_lock() is a bug.
Reported-by: Sasha Levin <levinsasha928@xxxxxxxxx>
Signed-off-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/task_mmu.c | 1 -
1 file changed, 1 deletion(-)
diff -puN fs/proc/task_mmu.c~pagemap-remove-remaining-unneeded-spin_lock fs/proc/task_mmu.c
--- a/fs/proc/task_mmu.c~pagemap-remove-remaining-unneeded-spin_lock
+++ a/fs/proc/task_mmu.c
@@ -783,7 +783,6 @@ static int pagemap_pte_range(pmd_t *pmd,
/* find the first VMA at or above 'addr' */
vma = find_vma(walk->mm, addr);
- spin_lock(&walk->mm->page_table_lock);
if (pmd_trans_huge_lock(pmd, vma) == 1) {
for (; addr != end; addr += PAGE_SIZE) {
unsigned long offset;
_
Patches currently in -mm which might be from n-horiguchi@xxxxxxxxxxxxx are
memcg-fix-change-behavior-of-shared-anon-at-moving-task.patch
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