[PATCH v2 57/61] mm/oom_kill: Use maple tree iterators instead of vma linked list

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>

Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
 mm/oom_kill.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 431d38c3bba8..40a01f334735 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -519,6 +519,7 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
 {
 	struct vm_area_struct *vma;
 	bool ret = true;
+	MA_STATE(mas, &mm->mm_mt, 0, 0);
 
 	/*
 	 * Tell all users of get_user/copy_from_user etc... that the content
@@ -528,7 +529,8 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
 	 */
 	set_bit(MMF_UNSTABLE, &mm->flags);
 
-	for (vma = mm->mmap ; vma; vma = vma->vm_next) {
+	rcu_read_lock();
+	mas_for_each(&mas, vma, ULONG_MAX) {
 		if (!can_madv_lru_vma(vma))
 			continue;
 
@@ -560,6 +562,7 @@ bool __oom_reap_task_mm(struct mm_struct *mm)
 			tlb_finish_mmu(&tlb);
 		}
 	}
+	rcu_read_unlock();
 
 	return ret;
 }
-- 
2.30.2





[Index of Archives]     [Linux ARM Kernel]     [Linux ARM]     [Linux Omap]     [Fedora ARM]     [IETF Annouce]     [Bugtraq]     [Linux OMAP]     [Linux MIPS]     [eCos]     [Asterisk Internet PBX]     [Linux API]

  Powered by Linux