From: Jens Axboe <jens.axboe@oracle.com>
Date: Tue, 24 Apr 2007 19:17:33 +0000 (+0200)
Subject: ll_rw_blk: add io_context private pointer
X-Git-Tag: v2.6.22-rc1~1108^2^2~1
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e521c27eee33cebd618c26649e2c93803004647;p=linux-2.6

ll_rw_blk: add io_context private pointer

To be used by as/cfq as they see fit.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index 3de06953ac..123003a904 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -3741,6 +3741,7 @@ static struct io_context *current_io_context(gfp_t gfp_flags, int node)
 		ret->nr_batch_requests = 0; /* because this is 0 */
 		ret->aic = NULL;
 		ret->cic_root.rb_node = NULL;
+		ret->ioc_data = NULL;
 		/* make sure set_task_ioprio() sees the settings above */
 		smp_wmb();
 		tsk->io_context = ret;
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 83dcd8c0e9..a686eabe22 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -116,6 +116,7 @@ struct io_context {
 
 	struct as_io_context *aic;
 	struct rb_root cic_root;
+	void *ioc_data;
 };
 
 void put_io_context(struct io_context *ioc);