fs/buffer: remove bh_submit_read() helper

bh_submit_read() has no user anymore, just remove it.

Link: https://lkml.kernel.org/r/20220901133505.2510834-15-yi.zhang@huawei.com
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/fs/buffer.c b/fs/buffer.c
index 2cccc75..b4c9fff 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3025,31 +3025,6 @@ void __bh_read_batch(int nr, struct buffer_head *bhs[],
 }
 EXPORT_SYMBOL(__bh_read_batch);
 
-/**
- * bh_submit_read - Submit a locked buffer for reading
- * @bh: struct buffer_head
- *
- * Returns zero on success and -EIO on error.
- */
-int bh_submit_read(struct buffer_head *bh)
-{
-       BUG_ON(!buffer_locked(bh));
-
-       if (buffer_uptodate(bh)) {
-               unlock_buffer(bh);
-               return 0;
-       }
-
-       get_bh(bh);
-       bh->b_end_io = end_buffer_read_sync;
-       submit_bh(REQ_OP_READ, bh);
-       wait_on_buffer(bh);
-       if (buffer_uptodate(bh))
-               return 0;
-       return -EIO;
-}
-EXPORT_SYMBOL(bh_submit_read);
-
 void __init buffer_init(void)
 {
        unsigned long nrpages;

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index b415d8b..9b6556d 100644 (file)
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -230,7 +230,6 @@ int submit_bh(blk_opf_t, struct buffer_head *);
 void write_boundary_block(struct block_device *bdev,
                        sector_t bblock, unsigned blocksize);
 int bh_uptodate_or_lock(struct buffer_head *bh);
-int bh_submit_read(struct buffer_head *bh);
 int __bh_read(struct buffer_head *bh, blk_opf_t op_flags, bool wait);
 void __bh_read_batch(int nr, struct buffer_head *bhs[],
                     blk_opf_t op_flags, bool force_lock);