Just like we have a call flush_dcache_read() after zrma_bvec_read(), add
missing flush_dcache_page() call before zram_bdev_write() in order to
handle the cache congruency of the kernel and userspace mappings of
page for REQ_OP_WRITE handling.
Signed-off-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>
---
drivers/block/zram/zram_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c
index fc37419b3735..a7954ae80d40 100644
--- a/drivers/block/zram/zram_drv.c
+++ b/drivers/block/zram/zram_drv.c
@@ -1887,6 +1887,7 @@ static void zram_bio_rw(struct zram *zram, struct bio *bio)
SECTOR_SHIFT;
if (op_is_write(bio_op(bio))) {
+ flush_dcache_page(bv.bv_page);
ret = zram_bvec_write(zram, &bv, index, offset, bio);
if (ret < 0) {
atomic64_inc(&zram->stats.failed_writes);
--
2.40.0
