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authorGreg Edwards <gedwards@ddn.com>2018-07-26 15:52:54 -0400
committerJens Axboe <axboe@kernel.dk>2018-07-26 15:49:43 -0600
commitcdcdcaae8450a975e7d07e1bfec21f9b8c016d0c (patch)
tree27016d6616006a8f953e2eabec8616853aa1541b /mm/readahead.c
parent359f642700f2ff05d9c94cd9216c97af7b8e9553 (diff)
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scsi: virtio_scsi: fix pi_bytes{out,in} on 4 KiB block size devices
When the underlying device is a 4 KiB logical block size device with a protection interval exponent of 0, i.e. 4096 bytes data + 8 bytes PI, the driver miscalculates the pi_bytes{out,in} by a factor of 8x (64 bytes). This leads to errors on all reads and writes on 4 KiB logical block size devices when CONFIG_BLK_DEV_INTEGRITY is enabled and the VIRTIO_SCSI_F_T10_PI feature bit has been negotiated. Fixes: e6dc783a38ec0 ("virtio-scsi: Enable DIF/DIX modes in SCSI host LLD") Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Edwards <gedwards@ddn.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm/readahead.c')
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