Messages in this thread Patch in this message | | | From | Liam Howlett <> | Subject | [PATCH v2 31/61] drivers/misc/cxl: Use maple tree iterators for cxl_prefault_vma() | Date | Tue, 17 Aug 2021 15:47:21 +0000 |
| |
From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com> --- drivers/misc/cxl/fault.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/misc/cxl/fault.c b/drivers/misc/cxl/fault.c index 60c829113299..60a33b953ef4 100644 --- a/drivers/misc/cxl/fault.c +++ b/drivers/misc/cxl/fault.c @@ -313,6 +313,7 @@ static void cxl_prefault_vma(struct cxl_context *ctx) struct vm_area_struct *vma; int rc; struct mm_struct *mm; + MA_STATE(mas, NULL, 0, 0); mm = get_mem_context(ctx); if (mm == NULL) { @@ -321,8 +322,10 @@ static void cxl_prefault_vma(struct cxl_context *ctx) return; } + mas.tree = &mm->mm_mt; mmap_read_lock(mm); - for (vma = mm->mmap; vma; vma = vma->vm_next) { + rcu_read_lock(); + mas_for_each(&mas, vma, ULONG_MAX) { for (ea = vma->vm_start; ea < vma->vm_end; ea = next_segment(ea, slb.vsid)) { rc = copro_calculate_slb(mm, ea, &slb); @@ -336,6 +339,7 @@ static void cxl_prefault_vma(struct cxl_context *ctx) last_esid = slb.esid; } } + rcu_read_unlock(); mmap_read_unlock(mm); mmput(mm); -- 2.30.2
| |