linux-ext4 - [PATCH V15 03/18] block: remove bvec_iter

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Date:   Fri, 15 Feb 2019 19:13:09 +0800
From:   Ming Lei <ming.lei@...hat.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Theodore Ts'o <tytso@....edu>,
        Omar Sandoval <osandov@...com>,
        Sagi Grimberg <sagi@...mberg.me>,
        Dave Chinner <dchinner@...hat.com>,
        Kent Overstreet <kent.overstreet@...il.com>,
        Mike Snitzer <snitzer@...hat.com>, dm-devel@...hat.com,
        Alexander Viro <viro@...iv.linux.org.uk>,
        linux-fsdevel@...r.kernel.org, linux-raid@...r.kernel.org,
        David Sterba <dsterba@...e.com>, linux-btrfs@...r.kernel.org,
        "Darrick J . Wong" <darrick.wong@...cle.com>,
        linux-xfs@...r.kernel.org, Gao Xiang <gaoxiang25@...wei.com>,
        Christoph Hellwig <hch@....de>, linux-ext4@...r.kernel.org,
        Coly Li <colyli@...e.de>, linux-bcache@...r.kernel.org,
        Boaz Harrosh <ooo@...ctrozaur.com>,
        Bob Peterson <rpeterso@...hat.com>, cluster-devel@...hat.com,
        Ming Lei <ming.lei@...hat.com>
Subject: [PATCH V15 03/18] block: remove bvec_iter_rewind()

Commit 7759eb23fd980 ("block: remove bio_rewind_iter()") removes
bio_rewind_iter(), then no one uses bvec_iter_rewind() any more,
so remove it.

Reviewed-by: Omar Sandoval <osandov@...com>
Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Ming Lei <ming.lei@...hat.com>
---
 include/linux/bvec.h | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/include/linux/bvec.h b/include/linux/bvec.h
index 02c73c6aa805..ba0ae40e77c9 100644
--- a/include/linux/bvec.h
+++ b/include/linux/bvec.h
@@ -92,30 +92,6 @@ static inline bool bvec_iter_advance(const struct bio_vec *bv,
 	return true;
 }
 
-static inline bool bvec_iter_rewind(const struct bio_vec *bv,
-				     struct bvec_iter *iter,
-				     unsigned int bytes)
-{
-	while (bytes) {
-		unsigned len = min(bytes, iter->bi_bvec_done);
-
-		if (iter->bi_bvec_done == 0) {
-			if (WARN_ONCE(iter->bi_idx == 0,
-				      "Attempted to rewind iter beyond "
-				      "bvec's boundaries\n")) {
-				return false;
-			}
-			iter->bi_idx--;
-			iter->bi_bvec_done = __bvec_iter_bvec(bv, *iter)->bv_len;
-			continue;
-		}
-		bytes -= len;
-		iter->bi_size += len;
-		iter->bi_bvec_done -= len;
-	}
-	return true;
-}
-
 #define for_each_bvec(bvl, bio_vec, iter, start)			\
 	for (iter = (start);						\
 	     (iter).bi_size &&						\
-- 
2.9.5