Merge branch 'linus' into sched/core, to resolve conflicts

Conflicts:
	kernel/sysctl.c

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 7 insertions, 18 deletions

diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index ef74ad5fd362..0a648bb455ae 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1296,22 +1296,6 @@ static ssize_t fuse_dev_read(struct kiocb *iocb, const struct iovec *iov,
 	return fuse_dev_do_read(fc, file, &cs, iov_length(iov, nr_segs));
 }
 
-static int fuse_dev_pipe_buf_steal(struct pipe_inode_info *pipe,
-				   struct pipe_buffer *buf)
-{
-	return 1;
-}
-
-static const struct pipe_buf_operations fuse_dev_pipe_buf_ops = {
-	.can_merge = 0,
-	.map = generic_pipe_buf_map,
-	.unmap = generic_pipe_buf_unmap,
-	.confirm = generic_pipe_buf_confirm,
-	.release = generic_pipe_buf_release,
-	.steal = fuse_dev_pipe_buf_steal,
-	.get = generic_pipe_buf_get,
-};
-
 static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
 				    struct pipe_inode_info *pipe,
 				    size_t len, unsigned int flags)
@@ -1358,7 +1342,11 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
 		buf->page = bufs[page_nr].page;
 		buf->offset = bufs[page_nr].offset;
 		buf->len = bufs[page_nr].len;
-		buf->ops = &fuse_dev_pipe_buf_ops;
+		/*
+		 * Need to be careful about this.  Having buf->ops in module
+		 * code can Oops if the buffer persists after module unload.
+		 */
+		buf->ops = &nosteal_pipe_buf_ops;
 
 		pipe->nrbufs++;
 		page_nr++;
@@ -1599,7 +1587,8 @@ static int fuse_notify_store(struct fuse_conn *fc, unsigned int size,
 
 		this_num = min_t(unsigned, num, PAGE_CACHE_SIZE - offset);
 		err = fuse_copy_page(cs, &page, offset, this_num, 0);
-		if (!err && offset == 0 && (num != 0 || file_size == end))
+		if (!err && offset == 0 &&
+		    (this_num == PAGE_CACHE_SIZE || file_size == end))
 			SetPageUptodate(page);
 		unlock_page(page);
 		page_cache_release(page);