This patch series implements a block timeout handler for DASDs. The main impetus was to allow for a fixed upper timeout value after which a request is aborted. This is required eg when implementing a host-based mirroring system where otherwise the entire mirror would stall under certain circumstances.
Changes since v1: - Fixed lock inversion in dasd_times_out() - Checked for 'device->block' when writing to 'timeout' attribute - Check against 'UINT_MAX' when verifying the 'timeout' value Hannes Reinecke (9): dasd: Clarify comment dasd: make number of retries configurable dasd: process all requests in the device tasklet dasd: Implement block timeout handling dasd: Reduce amount of messages for specific errors dasd: detailed I/O errors block: check for timeout function in blk_rq_timed_out() dasd: Add 'timeout' attribute dasd: Fail all requests when DASD_FLAG_ABORTIO is set arch/s390/include/uapi/asm/dasd.h | 4 + block/blk-core.c | 3 + block/blk-timeout.c | 5 +- drivers/s390/block/dasd.c | 115 +++++++++++++++++++++++++++++++++---- drivers/s390/block/dasd_devmap.c | 97 +++++++++++++++++++++++++++++++ drivers/s390/block/dasd_diag.c | 8 ++- drivers/s390/block/dasd_eckd.c | 15 ++++- drivers/s390/block/dasd_erp.c | 8 +++ drivers/s390/block/dasd_fba.c | 10 +++- drivers/s390/block/dasd_int.h | 10 +++ drivers/s390/block/dasd_ioctl.c | 59 +++++++++++++++++++ 11 files changed, 313 insertions(+), 21 deletions(-) -- 1.7.4.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
