diff options
| author | James Bottomley <James.Bottomley@HansenPartnership.com> | 2015-12-28 07:19:58 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2015-12-28 07:19:58 -0800 |
| commit | f9ec0d559ef8d36266b52314e8c0158327572726 (patch) | |
| tree | 5e5116e20d793367a3a245ff4dfc3cace17cb723 | |
| parent | ed94724bedcbc40cbfc12d16990e834d64220d3f (diff) | |
| parent | 9c1d9c207bb800498347a2716da298043ee280c5 (diff) | |
Merge remote-tracking branch 'mkp-scsi/4.4/scsi-fixes' into fixes
| -rw-r--r-- | drivers/scsi/sd.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 3d22fc3e3c1a..4e08d1cd704d 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -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 |