Staging: ramzswap: Set block size to PAGE_SIZE

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@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/ramzswap/ramzswap_drv.c b/drivers/staging/ramzswap/ramzswap_drv.c
index 3567ee3991bde653f2c732bfdf8cd390d24d0ed6..2021ad6fb013a6a460ab1ddbc044b8001ebd6675 100644 (file)
--- 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;