linux-kernel - [PATCH] iov_iter: Remove last

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Message-ID: <2933618.1680689716@warthog.procyon.org.uk>
Date:   Wed, 05 Apr 2023 11:15:16 +0100
From:   David Howells <dhowells@...hat.com>
To:     Jens Axboe <axboe@...nel.dk>
cc:     dhowells@...hat.com, Christoph Hellwig <hch@....de>,
        Matthew Wilcox <willy@...radead.org>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Jeff Layton <jlayton@...nel.org>, linux-nfs@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] iov_iter: Remove last_offset member

Hi Jens,

Can you add this to the block tree?

David
---
iov_iter: Remove last_offset member

With the removal of ITER_PIPE, the last_offset member of struct iov_iter is
no longer used, so remove it and un-unionise the remaining member.

Signed-off-by: David Howells <dhowells@...hat.com>
Reviewed-by: Jeff Layton <jlayton@...nel.org>
cc: Jens Axboe <axboe@...nel.dk>
cc: Matthew Wilcox <willy@...radead.org>
cc: Alexander Viro <viro@...iv.linux.org.uk>
cc: linux-nfs@...r.kernel.org
cc: linux-fsdevel@...r.kernel.org
cc: linux-mm@...ck.org
cc: netdev@...r.kernel.org
---
 include/linux/uio.h |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 74598426edb4..2d8a70cb9b26 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -43,10 +43,7 @@ struct iov_iter {
 	bool nofault;
 	bool data_source;
 	bool user_backed;
-	union {
-		size_t iov_offset;
-		int last_offset;
-	};
+	size_t iov_offset;
 	size_t count;
 	union {
 		const struct iovec *iov;