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181011e04a
scsi tgt breaks up a command into multple scatterlists if we cannot fit all the data in one. This was because the block rq helpers did not support large requests and because we can get a command of any old size so it is hard to preallocate pages for scatterlist large enough (we cannot really preallocate pages with the bio map user path). In 2.6.20, we added large request support to the block layer helper, blk_rq_map_user. And at LSF, we talked about increasing SCSI_MAX_PHYS_SEGMENTS for scsi tgt if we want to support really really :) large (greater than 256 * PAGE_SIZE in the worst mapping case) requests. The only target currently implemented does not even support the multiple scatterlists stuff and only supports smaller requests, so this patch just coverts scsi tgt to use blk_rq_map_user. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com> |
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| .. | ||
| iscsi_if.h | ||
| iscsi_proto.h | ||
| Kbuild | ||
| libiscsi.h | ||
| libsas.h | ||
| libsrp.h | ||
| sas.h | ||
| scsi_cmnd.h | ||
| scsi_dbg.h | ||
| scsi_device.h | ||
| scsi_devinfo.h | ||
| scsi_driver.h | ||
| scsi_eh.h | ||
| scsi_host.h | ||
| scsi_ioctl.h | ||
| scsi_netlink_fc.h | ||
| scsi_netlink.h | ||
| scsi_tcq.h | ||
| scsi_tgt_if.h | ||
| scsi_tgt.h | ||
| scsi_transport_fc.h | ||
| scsi_transport_iscsi.h | ||
| scsi_transport_sas.h | ||
| scsi_transport_spi.h | ||
| scsi_transport.h | ||
| scsi.h | ||
| scsicam.h | ||
| sd.h | ||
| sg.h | ||
| srp.h | ||