Pages used in scatterlist can be mapped page cache pages (and often are),
so we must use flush_dcache_page here instead of the more limited
flush_kernel_dcache_page that is intended for highmem pages only.
Also remove the PageSlab check given that page_mapping_file as used
by the flush_dcache_page implementations already contains that check.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
lib/scatterlist.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/lib/scatterlist.c b/lib/scatterlist.c
index 27efa6178153..627aa84f8bbd 100644
--- a/lib/scatterlist.c
+++ b/lib/scatterlist.c
@@ -887,9 +887,8 @@ void sg_miter_stop(struct sg_mapping_iter *miter)
miter->__offset += miter->consumed;
miter->__remaining -= miter->consumed;
- if ((miter->__flags & SG_MITER_TO_SG) &&
- !PageSlab(miter->page))
- flush_kernel_dcache_page(miter->page);
+ if (miter->__flags & SG_MITER_TO_SG)
+ flush_dcache_page(miter->page);
if (miter->__flags & SG_MITER_ATOMIC) {
WARN_ON_ONCE(preemptible());
--
2.30.2
