linux-kernel - [PATCH 09/12] mm: minor cleanup of iov_iter_single_seg

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Message-ID: <20121026154938.18931.46351.stgit@maximpc.sw.ru>
Date:	Fri, 26 Oct 2012 19:50:04 +0400
From:	Maxim Patlasov <mpatlasov@...allels.com>
To:	miklos@...redi.hu
Cc:	fuse-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org,
	devel@...nvz.org
Subject: [PATCH 09/12] mm: minor cleanup of iov_iter_single_seg_count()

The function does not modify iov_iter which 'i' points to.

Signed-off-by: Maxim Patlasov <mpatlasov@...allels.com>
---
 include/linux/fs.h |    2 +-
 mm/filemap.c       |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/fs.h b/include/linux/fs.h
index b33cfc9..8967baa 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -300,7 +300,7 @@ size_t iov_iter_copy_from_user(struct page *page,
 		struct iov_iter *i, unsigned long offset, size_t bytes);
 void iov_iter_advance(struct iov_iter *i, size_t bytes);
 int iov_iter_fault_in_readable(struct iov_iter *i, size_t bytes);
-size_t iov_iter_single_seg_count(struct iov_iter *i);
+size_t iov_iter_single_seg_count(const struct iov_iter *i);
 
 static inline void iov_iter_init(struct iov_iter *i,
 			const struct iovec *iov, unsigned long nr_segs,
diff --git a/mm/filemap.c b/mm/filemap.c
index 83efee7..24a7ea5 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2056,7 +2056,7 @@ EXPORT_SYMBOL(iov_iter_fault_in_readable);
 /*
  * Return the count of just the current iov_iter segment.
  */
-size_t iov_iter_single_seg_count(struct iov_iter *i)
+size_t iov_iter_single_seg_count(const struct iov_iter *i)
 {
 	const struct iovec *iov = i->iov;
 	if (i->nr_segs == 1)

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