iov_iter: Remove last_offset from iov_iter as it was for ITER_PIPE

Now that ITER_PIPE has been removed, iov_iter::last_offset is no longer
used, so remove it.

Signed-off-by: David Howells <dhowells@redhat.com>
Link: https://lore.kernel.org/r/20230925120309.1731676-2-dhowells@redhat.com
cc: Alexander Viro <viro@zeniv.linux.org.uk>
cc: Jens Axboe <axboe@kernel.dk>
cc: Christoph Hellwig <hch@lst.de>
cc: Christian Brauner <christian@brauner.io>
cc: Matthew Wilcox <willy@infradead.org>
cc: Linus Torvalds <torvalds@linux-foundation.org>
cc: David Laight <David.Laight@ACULAB.COM>
cc: linux-block@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 42bce38a8e870506a09e248a32b8dea1434cba84..2000e42a6586329e01349fe9a5bb3dee52cb0e52 100644 (file)
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -44,10 +44,7 @@ struct iov_iter {
        bool nofault;
        bool data_source;
        bool user_backed;
-       union {
-               size_t iov_offset;
-               int last_offset;
-       };
+       size_t iov_offset;
        /*
         * Hack alert: overlay ubuf_iovec with iovec + count, so
         * that the members resolve correctly regardless of the type