linux-kernel - [PATCH 01/15] block: don't overwrite bdi->state after bdi

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Date:	Fri, 12 Jun 2009 14:54:01 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Cc:	chris.mason@...cle.com, david@...morbit.com, hch@...radead.org,
	akpm@...ux-foundation.org, jack@...e.cz,
	yanmin_zhang@...ux.intel.com, richard@....demon.co.uk,
	damien.wyart@...e.fr, dedekind1@...il.com, fweisbec@...il.com,
	Jens Axboe <jens.axboe@...cle.com>
Subject: [PATCH 01/15] block: don't overwrite bdi->state after bdi_init() has been run

Move the defaults to where we do the init of the backing_dev_info.

Signed-off-by: Jens Axboe <jens.axboe@...cle.com>
---
 block/blk-core.c     |    5 +++++
 block/blk-settings.c |    4 ----
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/block/blk-core.c b/block/blk-core.c
index f6452f6..94d88fa 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -498,6 +498,11 @@ struct request_queue *blk_alloc_queue_node(gfp_t gfp_mask, int node_id)
 
 	q->backing_dev_info.unplug_io_fn = blk_backing_dev_unplug;
 	q->backing_dev_info.unplug_io_data = q;
+	q->backing_dev_info.ra_pages =
+			(VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
+	q->backing_dev_info.state = 0;
+	q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY;
+
 	err = bdi_init(&q->backing_dev_info);
 	if (err) {
 		kmem_cache_free(blk_requestq_cachep, q);
diff --git a/block/blk-settings.c b/block/blk-settings.c
index d71cedc..138610b 100644
--- a/block/blk-settings.c
+++ b/block/blk-settings.c
@@ -129,10 +129,6 @@ void blk_queue_make_request(struct request_queue *q, make_request_fn *mfn)
 	blk_queue_max_segment_size(q, MAX_SEGMENT_SIZE);
 
 	q->make_request_fn = mfn;
-	q->backing_dev_info.ra_pages =
-			(VM_MAX_READAHEAD * 1024) / PAGE_CACHE_SIZE;
-	q->backing_dev_info.state = 0;
-	q->backing_dev_info.capabilities = BDI_CAP_MAP_COPY;
 	blk_queue_max_sectors(q, SAFE_MAX_SECTORS);
 	blk_queue_logical_block_size(q, 512);
 	blk_queue_dma_alignment(q, 511);
-- 
1.6.3.rc0.1.gf800

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