Greetings, The following are patches for v2.6.31-rc5 to get the TCM/pSCSI subsystem plugin running again. The first patch converts TCM/pSCSI to use the new blk_make_request() (Thanks Boaz!) to map physical memory (struct page) -> struct bio -> struct request for SCF_SCSI_DATA_SG_IO_CDB type I/O. This is done by using bio_kmalloc() to obtain struct bio, and each struct page is set using bio_add_pg_page() in pscsi_map_task_SG(). If the received CDB's payload exceeds BIO_MAX_PAGES, bio_kmalloc() will be called again and the bios will be chained together before calling blk_make_request() and pscsi_blk_init_request() to complete initialization of the struct request. The second patch removes a call to dev_get_drvdata() for TYPE_ROM that previously had been obtaining struct scsi_cd to access struct gendisk for passing into blk_execute_rq_nowait(). This had been causing an OOPs on v2.6.31-rc5 with physical TYPE_ROM, so it has been removed and blk_execute_rq_nowait() seems to work fine w/o the struct gendisk pointer for TYPE_ROM. Boaz and co, any comments you can make on the blk_make_request() usage in Patch 1 is greatly apperciated. --nab [PATCH 1/2] [Target_Core_Mod/pSCSI]: Use blk_make_request() in v2.6.31-rc [PATCH 2/2] [Target_Core_Mod/pSCSI]: Fix bug with struct scsi_cd access for blk_execute_rq_nowait() drivers/target/target_core_pscsi.c | 134 ++++++++++++++++++++++------------- 1 files changed, 84 insertions(+), 50 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
