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Subject: [RFC PATCH 1/2] iov_iter: Remove iov_iter_for_each_range()
From:   David Howells <dhowells@redhat.com>
To:     viro@zeniv.linux.org.uk
Cc:     dhowells@redhat.com, willy@infradead.org, jlayton@kernel.org,
        hch@lst.de, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
        linux-cachefs@redhat.com, v9fs-developer@lists.sourceforge.net,
        linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org,
        linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org,
        linux-kernel@vger.kernel.org
Date:   Fri, 09 Apr 2021 19:10:53 +0100
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Remove iov_iter_for_each_range() as it's no longer used with the removal of
lustre.

Signed-off-by: David Howells <dhowells@redhat.com>
---

 include/linux/uio.h |    4 ----
 lib/iov_iter.c      |   27 ---------------------------
 2 files changed, 31 deletions(-)

diff --git a/include/linux/uio.h b/include/linux/uio.h
index 5f5ffc45d4aa..221c256304d4 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -295,8 +295,4 @@ ssize_t __import_iovec(int type, const struct iovec __user *uvec,
 int import_single_range(int type, void __user *buf, size_t len,
 		 struct iovec *iov, struct iov_iter *i);
 
-int iov_iter_for_each_range(struct iov_iter *i, size_t bytes,
-			    int (*f)(struct kvec *vec, void *context),
-			    void *context);
-
 #endif
diff --git a/lib/iov_iter.c b/lib/iov_iter.c
index f808c625c11e..93e9838c128d 100644
--- a/lib/iov_iter.c
+++ b/lib/iov_iter.c
@@ -2094,30 +2094,3 @@ int import_single_range(int rw, void __user *buf, size_t len,
 	return 0;
 }
 EXPORT_SYMBOL(import_single_range);
-
-int iov_iter_for_each_range(struct iov_iter *i, size_t bytes,
-			    int (*f)(struct kvec *vec, void *context),
-			    void *context)
-{
-	struct kvec w;
-	int err = -EINVAL;
-	if (!bytes)
-		return 0;
-
-	iterate_all_kinds(i, bytes, v, -EINVAL, ({
-		w.iov_base = kmap(v.bv_page) + v.bv_offset;
-		w.iov_len = v.bv_len;
-		err = f(&w, context);
-		kunmap(v.bv_page);
-		err;}), ({
-		w = v;
-		err = f(&w, context);}), ({
-		w.iov_base = kmap(v.bv_page) + v.bv_offset;
-		w.iov_len = v.bv_len;
-		err = f(&w, context);
-		kunmap(v.bv_page);
-		err;})
-	)
-	return err;
-}
-EXPORT_SYMBOL(iov_iter_for_each_range);