Messages in this thread Patch in this message | | | From | Matthew Wilcox <> | Subject | [PATCH v2 2/6] dax: Use copy_from_iter_nocache | Date | Fri, 3 Jul 2015 10:40:39 -0400 |
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From: Matthew Wilcox <willy@linux.intel.com>
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: Matthew Wilcox <willy@linux.intel.com> --- fs/dax.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/dax.c b/fs/dax.c index 99b5fbc..eaa9e06 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -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); else -- 2.1.4
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