[PATCH 7/7] zram: mark the disk as non-rotating media

Robert Jennings rcj at linux.vnet.ibm.com
Wed Jan 26 17:27:44 UTC 2011


Adding QUEUE_FLAG_NONROT for the in the request_queue flags.  When used
as a swap device, scan_swap_map will avoid the extra work of optimizing
for rotating media.

Signed-off-by: Robert Jennings <rcj at linux.vnet.ibm.com>
---
 drivers/staging/zram/zram_drv.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index d5e0275..450c618 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -593,6 +593,7 @@ static int create_device(struct zram *zram, int device_id)
 		goto out;
 	}
 
+	zram->queue->queue_flags ^= QUEUE_FLAG_NONROT;
 	blk_queue_make_request(zram->queue, zram_make_request);
 	zram->queue->queuedata = zram;
 
-- 
1.6.0.2




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