From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nicholas A. Bellinger" Subject: [PATCH 0/3] tcm: SYNCHRONIZE_CACHE emulation fixes and IBLOCK support Date: Fri, 27 Aug 2010 23:53:42 -0700 Message-ID: <1282978422-16905-1-git-send-email-nab@linux-iscsi.org> Return-path: Received: from smtp127.sbc.mail.sp1.yahoo.com ([69.147.65.186]:48733 "HELO smtp127.sbc.mail.sp1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751875Ab0H1Gxq (ORCPT ); Sat, 28 Aug 2010 02:53:46 -0400 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi , linux-kernel Cc: Christoph Hellwig , Tejun Heo , FUJITA Tomonori , Mike Christie , Hannes Reinecke , James Bottomley , Nicholas Bellinger From: Nicholas Bellinger Greetings hch, tejun and Co, These patches are a follow up to the series posted recently for lio-core-2.6.git/lio-4.0 here: [PATCH 0/4] tcm: Add WriteCache + FUA Write support to TCM/FILEIO http://marc.info/?l=linux-scsi&m=128288359913333&w=2 The first and second patch follows hch's recommendation and remove the extra 'flush entire cache of device' struct se_subsystem_api->do_sync_cache() caller from TCM Core in the original commit, and converts transport_generic_synchronize_cache() and FILEIO dependent code to use struct se_subsystem_api->do_sync_cache_range() for *both* the SYNCHRONIZE_CACHE emulation cases of 'per LBA + Number of Blocks Range' flush and 'flush entrire cache of device' op. The third patch in the series adds new support for WriteCache and FUA WRITE emulation into the TCM/IBLOCK subsystem plugin using block/blk-barrier.c:blkdev_issue_flush() w/ BLKDEV_IFL_WAIT flag. Note that since blkdev_issue_flush() does not support a LBA + Range flush, all TCM/IBLOCK SYNCHRONIZE_CACHE and FUA WRITE ops involving a LBA + Range are converted into a global device cache flush op w/ blkdev_issue_flush(). Many thanks again to hch for his guidence in this area, Signed-off-by: Nicholas A. Bellinger Nicholas Bellinger (3): tcm/fileio: Remove struct se_subsystem_api->do_sync_cache() usage tcm: Remove struct se_subsystem_api->do_sync_cache() tcm/iblock: Add WriteCache and Forced Unit Access WRITE emulation drivers/target/target_core_file.c | 31 ++++---- drivers/target/target_core_iblock.c | 119 ++++++++++++++++++++++++++++++- drivers/target/target_core_iblock.h | 1 + drivers/target/target_core_transport.c | 21 +----- include/target/target_core_transport.h | 7 -- 5 files changed, 135 insertions(+), 44 deletions(-)