Commit d0eb20a8 authored by Martin K. Petersen's avatar Martin K. Petersen

sd: Optimal I/O size is in bytes, not sectors

Commit ca369d51 ("block/sd: Fix device-imposed transfer length
limits") accidentally switched optimal I/O size reporting from bytes to
block layer sectors.
Signed-off-by: Martin K. Petersen's avatarMartin K. Petersen <[email protected]>
Reported-by: default avatarChristian Borntraeger <[email protected]>
Tested-by: default avatarChristian Borntraeger <[email protected]>
Fixes: ca369d51
Cc: [email protected] # 4.4+
Reviewed-by: default avatarJames E.J. Bottomley <[email protected]>
Reviewed-by: default avatarEwan D. Milne <[email protected]>
Reviewed-by: default avatarMatthew R. Ochs <[email protected]>
parent c142ce0d
......@@ -2893,7 +2893,7 @@ static int sd_revalidate_disk(struct gendisk *disk)
sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS &&
sdkp->opt_xfer_blocks * sdp->sector_size >= PAGE_CACHE_SIZE)
rw_max = q->limits.io_opt =
logical_to_sectors(sdp, sdkp->opt_xfer_blocks);
sdkp->opt_xfer_blocks * sdp->sector_size;
else
rw_max = BLK_DEF_MAX_SECTORS;
......
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