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Message-Id: <1435934443-17090-3-git-send-email-matthew.r.wilcox@intel.com> Date: Fri, 3 Jul 2015 10:40:39 -0400 From: Matthew Wilcox <matthew.r.wilcox@...el.com> To: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, Alexander Viro <viro@...iv.linux.org.uk> Cc: Matthew Wilcox <willy@...ux.intel.com> Subject: [PATCH v2 2/6] dax: Use copy_from_iter_nocache From: Matthew Wilcox <willy@...ux.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@...ux.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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