From: Christoph Hellwig <hch@lst.de>
Date: Mon, 17 Jul 2023 15:49:57 +0000 (-0700)
Subject: iomap: micro optimize the ki_pos assignment in iomap_file_buffered_write
X-Git-Tag: v6.6.7~2332^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=efa96cc99793bafe96bdbff6abab94d81472a32d;p=platform%2Fkernel%2Flinux-starfive.git

iomap: micro optimize the ki_pos assignment in iomap_file_buffered_write

We have the new value for ki_pos right at hand in iter.pos, so assign
that instead of recalculating it from ret.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.harjani@gmail.com>
---

diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 7cc9f72..aa8967c 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -875,7 +875,7 @@ iomap_file_buffered_write(struct kiocb *iocb, struct iov_iter *i,
 	if (unlikely(iter.pos == iocb->ki_pos))
 		return ret;
 	ret = iter.pos - iocb->ki_pos;
-	iocb->ki_pos += ret;
+	iocb->ki_pos = iter.pos;
 	return ret;
 }
 EXPORT_SYMBOL_GPL(iomap_file_buffered_write);