diff options
| author | Ram Pai <linuxram@us.ibm.com> | 2017-01-26 16:37:01 -0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-01-31 22:36:53 -0500 |
| commit | f2e767bb5d6ee0d988cb7d4e54b0b21175802b6b (patch) | |
| tree | 02856806fddc633c2ff9f24703feba2d4e402b56 /drivers/scsi/aacraid/comminit.c | |
| parent | 2780f3c8f0233de90b6b47a23fc422b7780c5436 (diff) | |
| download | linux-f2e767bb5d6ee0d988cb7d4e54b0b21175802b6b.tar.gz linux-f2e767bb5d6ee0d988cb7d4e54b0b21175802b6b.tar.bz2 linux-f2e767bb5d6ee0d988cb7d4e54b0b21175802b6b.zip | |
scsi: mpt3sas: Force request partial completion alignment
The firmware or device, possibly under a heavy I/O load, can return on a
partial unaligned boundary. Scsi-ml expects these requests to be
completed on an alignment boundary. Scsi-ml blindly requeues the I/O
without checking the alignment boundary of the I/O request for the
remaining bytes. This leads to errors, since devices cannot perform
non-aligned read/write operations.
This patch fixes the issue in the driver. It aligns unaligned
completions of FS requests, by truncating them to the nearest alignment
boundary.
[mkp: simplified if statement]
Reported-by: Mauricio Faria De Oliveira <mauricfo@linux.vnet.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: Ram Pai <linuxram@us.ibm.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/aacraid/comminit.c')
0 files changed, 0 insertions, 0 deletions