tree f9825729d1928b7171c09fcec6a4fc45f759e168
parent 0d95716d6a1308c465d8c17ed1a217628936bb0c
author Mike Christie <michaelc@cs.wisc.edu> 1131708701 -0600
committer James Bottomley <jejb@mulgrave.(none)> 1134616149 -0800

[SCSI] add kmemcache for scsi_io_context

Add kmemcache of scsi io contexts.

In the future when we finalize on where these functions will live
we can add a mempool for it and do a bioset for out REQ_BLOCK_PC
bios. This is needed becuase the dm-multipath handlers will
want to use the scsi_exectute* functions for failover and we cannot
have them and the bio device allocating from the same mempool.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>