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block: get rid of bio_rw and READA

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These two are confusing leftover of the old world order, combining
values of the REQ_OP_ and REQ_ namespaces.  For callers that don't
special case we mostly just replace bi_rw with bio_data_dir or
op_is_write, except for the few cases where a switch over the REQ_OP_
values makes more sense.  Any check for READA is replaced with an
explicit check for REQ_RAHEAD.  Also remove the READA alias for
REQ_RAHEAD.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig
2016-07-19 11:28:41 +02:00
committed by Jens Axboe
parent 3f40bf2c89
commit 70246286e9
26 changed files with 95 additions and 96 deletions
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drivers/md/raid1.c
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@@ -1105,7 +1105,7 @@ static void raid1_make_request(struct mddev *mddev, struct bio * bio)
bitmap = mddev->bitmap;
/*
* make_request() can abort the operation when READA is being
* make_request() can abort the operation when read-ahead is being
* used and no empty request is available.
*
*/