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| author | FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> | 2008-04-29 09:54:39 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-04-29 14:48:55 +0200 |
| commit | d7e3c3249ef23b4617393c69fe464765b4ff1645 (patch) | |
| tree | 3471ea20b7fb4c4a9bbd7cfb3cc952344b5501d6 /block | |
| parent | block: replace sizeof(rq->cmd) with BLK_MAX_CDB (diff) | |
| download | linux-d7e3c3249ef23b4617393c69fe464765b4ff1645.tar.xz linux-d7e3c3249ef23b4617393c69fe464765b4ff1645.zip | |
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.c | 1 |
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; } |