[PATCH 3/7] Set block size to PAGE_SIZE

[Nitin Gupta]

ramzswap block size needs to be set equal to PAGE_SIZE to
avoid receiving any unaligned block I/O requests (happens
due to readahead logic during swapon). These unaligned
accesses produce unnecessary I/O errors, scaring users.

Signed-off-by: Nitin Gupta <ngupta@xxxxxxxxxx>
---
 drivers/staging/ramzswap/ramzswap_drv.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c
index 3567ee3..2021ad6 100644
--- a/drivers/staging/ramzswap/ramzswap_drv.c
+++ b/drivers/staging/ramzswap/ramzswap_drv.c
@@ -1335,6 +1335,10 @@ static int create_device(struct ramzswap *rzs, int device_id)
 	 * or set equal to backing swap device (if provided)
 	 */
 	set_capacity(rzs->disk, 0);
+
+	blk_queue_physical_block_size(rzs->disk->queue, PAGE_SIZE);
+	blk_queue_logical_block_size(rzs->disk->queue, PAGE_SIZE);
+
 	add_disk(rzs->disk);
 
 	rzs->init_done = 0;
-- 
1.6.2.5

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