- if (sdkp->opt_xfer_blocks && sdkp->opt_xfer_blocks <= dev_max &&
- sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS)
- rw_max = q->limits.io_opt =
- logical_to_sectors(sdp, sdkp->opt_xfer_blocks);
- else
+ if (sdkp->opt_xfer_blocks &&
+ sdkp->opt_xfer_blocks <= dev_max &&
+ sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS &&
+ logical_to_bytes(sdp, sdkp->opt_xfer_blocks) >= PAGE_CACHE_SIZE) {
+ q->limits.io_opt = logical_to_bytes(sdp, sdkp->opt_xfer_blocks);
+ rw_max = logical_to_sectors(sdp, sdkp->opt_xfer_blocks);
+ } else