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author | Martin K. Petersen | 2019-02-12 22:21:05 +0100 |
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committer | Martin K. Petersen | 2019-02-26 16:08:36 +0100 |
commit | a83da8a4509d3ebfe03bb7fffce022e4d5d4764f (patch) | |
tree | 83b3e9c1ee9892d95bb0b5ecf9c9c0837a9c72a1 /include/scsi | |
parent | scsi: MAINTAINERS: SCSI initiator and target tweaks (diff) | |
download | kernel-qcow2-linux-a83da8a4509d3ebfe03bb7fffce022e4d5d4764f.tar.gz kernel-qcow2-linux-a83da8a4509d3ebfe03bb7fffce022e4d5d4764f.tar.xz kernel-qcow2-linux-a83da8a4509d3ebfe03bb7fffce022e4d5d4764f.zip |
scsi: sd: Optimal I/O size should be a multiple of physical block size
It was reported that some devices report an OPTIMAL TRANSFER LENGTH of
0xFFFF blocks. That looks bogus, especially for a device with a
4096-byte physical block size.
Ignore OPTIMAL TRANSFER LENGTH if it is not a multiple of the device's
reported physical block size.
To make the sanity checking conditionals more readable--and to
facilitate printing warnings--relocate the checking to a helper
function. No functional change aside from the printks.
Cc: <stable@vger.kernel.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199759
Reported-by: Christoph Anton Mitterer <calestyo@scientia.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
0 files changed, 0 insertions, 0 deletions