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, 29 insertions, 35 deletions

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 39706c57ad3c..c8b68ab2e574 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -19,7 +19,6 @@
 #include <linux/pipe_fs_i.h>
 #include <linux/swap.h>
 #include <linux/splice.h>
-#include <linux/aio.h>
 
 MODULE_ALIAS_MISCDEV(FUSE_MINOR);
 MODULE_ALIAS("devname:fuse");
@@ -711,28 +710,26 @@ struct fuse_copy_state {
 	struct fuse_conn *fc;
 	int write;
 	struct fuse_req *req;
-	const struct iovec *iov;
+	struct iov_iter *iter;
 	struct pipe_buffer *pipebufs;
 	struct pipe_buffer *currbuf;
 	struct pipe_inode_info *pipe;
 	unsigned long nr_segs;
-	unsigned long seglen;
-	unsigned long addr;
 	struct page *pg;
 	unsigned len;
 	unsigned offset;
 	unsigned move_pages:1;
 };
 
-static void fuse_copy_init(struct fuse_copy_state *cs, struct fuse_conn *fc,
+static void fuse_copy_init(struct fuse_copy_state *cs,
+			   struct fuse_conn *fc,
 			   int write,
-			   const struct iovec *iov, unsigned long nr_segs)
+			   struct iov_iter *iter)
 {
 	memset(cs, 0, sizeof(*cs));
 	cs->fc = fc;
 	cs->write = write;
-	cs->iov = iov;
-	cs->nr_segs = nr_segs;
+	cs->iter = iter;
 }
 
 /* Unmap and put previous page of userspace buffer */
@@ -800,22 +797,16 @@ static int fuse_copy_fill(struct fuse_copy_state *cs)
 			cs->nr_segs++;
 		}
 	} else {
-		if (!cs->seglen) {
-			BUG_ON(!cs->nr_segs);
-			cs->seglen = cs->iov[0].iov_len;
-			cs->addr = (unsigned long) cs->iov[0].iov_base;
-			cs->iov++;
-			cs->nr_segs--;
-		}
-		err = get_user_pages_fast(cs->addr, 1, cs->write, &page);
+		size_t off;
+		err = iov_iter_get_pages(cs->iter, &page, PAGE_SIZE, 1, &off);
 		if (err < 0)
 			return err;
-		BUG_ON(err != 1);
+		BUG_ON(!err);
+		cs->len = err;
+		cs->offset = off;
 		cs->pg = page;
-		cs->offset = cs->addr % PAGE_SIZE;
-		cs->len = min(PAGE_SIZE - cs->offset, cs->seglen);
-		cs->seglen -= cs->len;
-		cs->addr += cs->len;
+		cs->offset = off;
+		iov_iter_advance(cs->iter, err);
 	}
 
 	return lock_request(cs->fc, cs->req);
@@ -1364,8 +1355,7 @@ static int fuse_dev_open(struct inode *inode, struct file *file)
 	return 0;
 }
 
-static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
-			      unsigned long nr_segs, loff_t pos)
+static ssize_t fuse_dev_read(struct kiocb *iocb, struct iov_iter *to)
 {
 	struct fuse_copy_state cs;
 	struct file *file = iocb->ki_filp;
@@ -1373,9 +1363,12 @@ static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
 	if (!fc)
 		return -EPERM;
 
-	fuse_copy_init(&cs, fc, 1, iov, nr_segs);
+	if (!iter_is_iovec(to))
+		return -EINVAL;
 
-	return fuse_dev_do_read(fc, file, &cs, iov_length(iov, nr_segs));
+	fuse_copy_init(&cs, fc, 1, to);
+
+	return fuse_dev_do_read(fc, file, &cs, iov_iter_count(to));
 }
 
 static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
@@ -1395,7 +1388,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
 	if (!bufs)
 		return -ENOMEM;
 
-	fuse_copy_init(&cs, fc, 1, NULL, 0);
+	fuse_copy_init(&cs, fc, 1, NULL);
 	cs.pipebufs = bufs;
 	cs.pipe = pipe;
 	ret = fuse_dev_do_read(fc, in, &cs, len);
@@ -1971,17 +1964,19 @@ static ssize_t fuse_dev_do_write(struct fuse_conn *fc,
 	return err;
 }
 
-static ssize_t fuse_dev_write(struct kiocb *iocb, const struct iovec *iov,
-			      unsigned long nr_segs, loff_t pos)
+static ssize_t fuse_dev_write(struct kiocb *iocb, struct iov_iter *from)
 {
 	struct fuse_copy_state cs;
 	struct fuse_conn *fc = fuse_get_conn(iocb->ki_filp);
 	if (!fc)
 		return -EPERM;
 
-	fuse_copy_init(&cs, fc, 0, iov, nr_segs);
+	if (!iter_is_iovec(from))
+		return -EINVAL;
+
+	fuse_copy_init(&cs, fc, 0, from);
 
-	return fuse_dev_do_write(fc, &cs, iov_length(iov, nr_segs));
+	return fuse_dev_do_write(fc, &cs, iov_iter_count(from));
 }
 
 static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
@@ -2044,8 +2039,9 @@ static ssize_t fuse_dev_splice_write(struct pipe_inode_info *pipe,
 	}
 	pipe_unlock(pipe);
 
-	fuse_copy_init(&cs, fc, 0, NULL, nbuf);
+	fuse_copy_init(&cs, fc, 0, NULL);
 	cs.pipebufs = bufs;
+	cs.nr_segs = nbuf;
 	cs.pipe = pipe;
 
 	if (flags & SPLICE_F_MOVE)
@@ -2233,11 +2229,9 @@ const struct file_operations fuse_dev_operations = {
 	.owner		= THIS_MODULE,
 	.open		= fuse_dev_open,
 	.llseek		= no_llseek,
-	.read		= do_sync_read,
-	.aio_read	= fuse_dev_read,
+	.read_iter	= fuse_dev_read,
 	.splice_read	= fuse_dev_splice_read,
-	.write		= do_sync_write,
-	.aio_write	= fuse_dev_write,
+	.write_iter	= fuse_dev_write,
 	.splice_write	= fuse_dev_splice_write,
 	.poll		= fuse_dev_poll,
 	.release	= fuse_dev_release,