Merge Linus master into drm-next

The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.

I've included the patch into the merge to fix the build.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 14 insertions, 17 deletions

diff --git a/fs/splice.c b/fs/splice.c
index 7968da96bebb..476024bb6546 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -32,7 +32,6 @@
 #include <linux/gfp.h>
 #include <linux/socket.h>
 #include <linux/compat.h>
-#include <linux/aio.h>
 #include "internal.h"
 
 /*
@@ -524,6 +523,9 @@ ssize_t generic_file_splice_read(struct file *in, loff_t *ppos,
 	loff_t isize, left;
 	int ret;
 
+	if (IS_DAX(in->f_mapping->host))
+		return default_file_splice_read(in, ppos, pipe, len, flags);
+
 	isize = i_size_read(in->f_mapping->host);
 	if (unlikely(*ppos >= isize))
 		return 0;
@@ -1534,34 +1536,29 @@ static long vmsplice_to_user(struct file *file, const struct iovec __user *uiov,
 	struct iovec iovstack[UIO_FASTIOV];
 	struct iovec *iov = iovstack;
 	struct iov_iter iter;
-	ssize_t count;
 
 	pipe = get_pipe_info(file);
 	if (!pipe)
 		return -EBADF;
 
-	ret = rw_copy_check_uvector(READ, uiov, nr_segs,
-				    ARRAY_SIZE(iovstack), iovstack, &iov);
-	if (ret <= 0)
-		goto out;
-
-	count = ret;
-	iov_iter_init(&iter, READ, iov, nr_segs, count);
+	ret = import_iovec(READ, uiov, nr_segs,
+			   ARRAY_SIZE(iovstack), &iov, &iter);
+	if (ret < 0)
+		return ret;
 
+	sd.total_len = iov_iter_count(&iter);
 	sd.len = 0;
-	sd.total_len = count;
 	sd.flags = flags;
 	sd.u.data = &iter;
 	sd.pos = 0;
 
-	pipe_lock(pipe);
-	ret = __splice_from_pipe(pipe, &sd, pipe_to_user);
-	pipe_unlock(pipe);
-
-out:
-	if (iov != iovstack)
-		kfree(iov);
+	if (sd.total_len) {
+		pipe_lock(pipe);
+		ret = __splice_from_pipe(pipe, &sd, pipe_to_user);
+		pipe_unlock(pipe);
+	}
 
+	kfree(iov);
 	return ret;
 }