Commit 872eb127 authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Al Viro

dax: Use copy_from_iter_nocache

When userspace does a write, there's no need for the written data to
pollute the CPU cache.  This matches the original XIP code.
Signed-off-by: default avatarMatthew Wilcox <>
Signed-off-by: default avatarAl Viro <>
parent 44f4c054
......@@ -155,7 +155,7 @@ static ssize_t dax_io(struct inode *inode, struct iov_iter *iter,
if (iov_iter_rw(iter) == WRITE)
len = copy_from_iter(addr, max - pos, iter);
len = copy_from_iter_nocache(addr, max - pos, iter);
else if (!hole)
len = copy_to_iter(addr, max - pos, iter);
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