luck/tmp_suning_uos_patched
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Merge remote-tracking branch 'mkp-scsi/4.4/scsi-fixes' into fixes

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This commit is contained in:
James Bottomley 2015-12-28 07:19:58 -08:00
commit f9ec0d559e
1 changed files with 6 additions and 3 deletions
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9
drivers/scsi/sd.c
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@ -2885,10 +2885,13 @@ static int sd_revalidate_disk(struct gendisk *disk)
/*
* Use the device's preferred I/O size for reads and writes
* unless the reported value is unreasonably large (or garbage).
* unless the reported value is unreasonably small, large, or
* garbage.
*/
if (sdkp->opt_xfer_blocks && sdkp->opt_xfer_blocks <= dev_max &&
sdkp->opt_xfer_blocks <= SD_DEF_XFER_BLOCKS)
if (sdkp->opt_xfer_blocks &&
sdkp->opt_xfer_blocks <= dev_max &&
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);
else