linux-kernel - linux-next: build warning after merge of the final tree (akpm and block tree related)

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Date:	Tue, 26 Mar 2013 17:05:54 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Jens Axboe <axboe@...nel.dk>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Kent Overstreet <koverstreet@...gle.com>
Subject: linux-next: build warning after merge of the final tree (akpm and
 block tree related)

Hi all,

After merging the final tree, today's linux-next build
produced this warning:

fs/bio.c: In function 'submit_bio_wait':
fs/bio.c:786:17: warning: assignment from incompatible pointer type [enabled by default]

This is due to an interaction between commit 9e882242c ("block: Add
submit_bio_wait(), remove from md") from the block tree and commit
"block: prep work for batch completion" from the akpm tree.

In fact we are getting several more warnings due to that patch in the
akpm tree:

drivers/md/bcache/writeback.c: In function 'write_dirty':
drivers/md/bcache/writeback.c:276:20: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/writeback.c: In function 'read_dirty':
drivers/md/bcache/writeback.c:350:21: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/movinggc.c: In function 'read_moving':
drivers/md/bcache/movinggc.c:160:18: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/request.c: In function 'bch_insert_data_loop':
drivers/md/bcache/request.c:518:16: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/request.c: In function 'do_bio_hook':
drivers/md/bcache/request.c:684:18: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/request.c: In function 'cached_dev_cache_miss':
drivers/md/bcache/request.c:926:19: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/request.c:957:29: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/debug.c: In function 'bch_data_verify':
drivers/md/bcache/debug.c:208:19: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/super.c: In function 'bch_write_bdev_super':
drivers/md/bcache/super.c:257:17: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/super.c: In function 'bcache_write_super':
drivers/md/bcache/super.c:295:18: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/super.c: In function 'uuid_io':
drivers/md/bcache/super.c:333:18: warning: assignment from incompatible pointer type [enabled by default]
drivers/md/bcache/super.c: In function 'prio_io':
drivers/md/bcache/super.c:492:17: warning: assignment from incompatible pointer type [enabled by default]

There are probably more ...
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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