[PATCH 4/6] scatterlist: replace flush_kernel_dcache_page with flush_dcache_page
From: Christoph Hellwig <hch@lst.de>
Date: 2021-07-12 06:12:39
Also in:
linux-arm-kernel, linux-doc, linux-mips, linux-mmc, linux-scsi, linux-sh, lkml
Subsystem:
library code, the rest · Maintainers:
Andrew Morton, Linus Torvalds
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@lst.de> --- 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