>From: [EMAIL PROTECTED]
>> I am still not sure if would be better not to allow to raise the DMA
>> limit in pre-2.4 kernels.
>My understanding of the scsi-generic.txt is that a reserved buffer is
>indeed available, in which case it would be useful to use
>SG_SET_RESERVED_SIZE:
>| The size of this reserved buffer can
>| subsequently be modified with the SG_SET_RESERVED_SIZE ioctl(). In both
>| cases these are requests subject to various dynamic constraints. The actual
>| amount of memory obtained can be found by the SG_GET_RESERVED_SIZE ioctl().
>| The reserved buffer will be used if:
>| - it is not already in use (eg when command queuing is in use)
>| - a write() does not call for a buffer size larger than the
>| reserved size.
>Where did you find that the buffer might not be available later when
>actually trying to use it? Neither can a libscg application use command
>queuing, nor should it expect to succeed when transmitting more data
>than allowed by scsi_maxdma(), so neither of these exceptions applies.
