diff mbox series

[17/17] mm: simplify generic_file_read_iter

Message ID 20201102184312.25926-18-willy@infradead.org (mailing list archive)
State New, archived
Headers show
Series Refactor generic_file_buffered_read | expand

Commit Message

Matthew Wilcox Nov. 2, 2020, 6:43 p.m. UTC 
From: Christoph Hellwig <hch@lst.de>

Avoid the pointless goto out just for returning retval.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 mm/filemap.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

Comments

Kent Overstreet Nov. 2, 2020, 8:07 p.m. UTC | #1 
On Mon, Nov 02, 2020 at 06:43:12PM +0000, Matthew Wilcox (Oracle) wrote:
> From: Christoph Hellwig <hch@lst.de>
> 
> Avoid the pointless goto out just for returning retval.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Reviewed-by: Kent Overstreet <kent.overstreet@gmail.com>
diff mbox series

Patch

diff --git a/mm/filemap.c b/mm/filemap.c
index 92bb308029c3..4676ce15a9a5 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2549,7 +2549,7 @@  generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 	ssize_t retval = 0;
 
 	if (!count)
-		goto out; /* skip atime */
+		return 0; /* skip atime */
 
 	if (iocb->ki_flags & IOCB_DIRECT) {
 		struct file *file = iocb->ki_filp;
@@ -2567,7 +2567,7 @@  generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 						iocb->ki_pos,
 					        iocb->ki_pos + count - 1);
 			if (retval < 0)
-				goto out;
+				return retval;
 		}
 
 		file_accessed(file);
@@ -2590,12 +2590,10 @@  generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)
 		 */
 		if (retval < 0 || !count || iocb->ki_pos >= size ||
 		    IS_DAX(inode))
-			goto out;
+			return retval;
 	}
 
-	retval = filemap_read(iocb, iter, retval);
-out:
-	return retval;
+	return filemap_read(iocb, iter, retval);
 }
 EXPORT_SYMBOL(generic_file_read_iter);