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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-04-29 11:54:39 +0400
committerJens Axboe <jens.axboe@oracle.com>2008-04-29 16:48:55 +0400
commitd7e3c3249ef23b4617393c69fe464765b4ff1645 (patch)
tree3471ea20b7fb4c4a9bbd7cfb3cc952344b5501d6 /block
parentd34c87e4ba3d1857f80a65179e81a18705a31656 (diff)
downloadlinux-d7e3c3249ef23b4617393c69fe464765b4ff1645.tar.xz
block: add large command support
This patch changes rq->cmd from the static array to a pointer to support large commands. We rarely handle large commands. So for optimization, a struct request still has a static array for a command. rq_init sets rq->cmd pointer to the static array. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
-rw-r--r--block/blk-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index e6fdb288be65..5d09f8c56024 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -117,6 +117,7 @@ void blk_rq_init(struct request_queue *q, struct request *rq)
rq->sector = rq->hard_sector = (sector_t) -1;
INIT_HLIST_NODE(&rq->hash);
RB_CLEAR_NODE(&rq->rb_node);
+ rq->cmd = rq->__cmd;
rq->tag = -1;
rq->ref_count = 1;
}