diff mbox series

[RFC,v2,01/13] mm: export zap_page_range() for driver use

Message ID 20201222145221.711-2-xieyongji@bytedance.com (mailing list archive)
State RFC
Headers show
Series Introduce VDUSE - vDPA Device in Userspace | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Yongji Xie Dec. 22, 2020, 2:52 p.m. UTC 
Export zap_page_range() for use in VDUSE.

Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
---
 mm/memory.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Christoph Hellwig Dec. 22, 2020, 3:44 p.m. UTC | #1 
On Tue, Dec 22, 2020 at 10:52:09PM +0800, Xie Yongji wrote:
> Export zap_page_range() for use in VDUSE.

Err, no.  This has absolutely no business being used by drivers.
diff mbox series

Patch

diff --git a/mm/memory.c b/mm/memory.c
index 7d608765932b..edd2d6497bb3 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1542,6 +1542,7 @@  void zap_page_range(struct vm_area_struct *vma, unsigned long start,
 	mmu_notifier_invalidate_range_end(&range);
 	tlb_finish_mmu(&tlb, start, range.end);
 }
+EXPORT_SYMBOL(zap_page_range);
 
 /**
  * zap_page_range_single - remove user pages in a given range