X-Git-Url: https://nv-tegra.nvidia.com/r/gitweb?p=linux-2.6.git;a=blobdiff_plain;f=drivers%2Fs390%2Fblock%2Fdasd.c;h=f779f674dfa0414b498f1cf0be497e4a87a89291;hp=fdb61380c5237679047a34719f801c3427552deb;hb=d99cf9d679a520d67f81d805b7cb91c68e1847f0;hpb=e650c305ec3178818b317dad37a6d9c7fa8ba28d diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c index fdb61380c52..f779f674dfa 100644 --- a/drivers/s390/block/dasd.c +++ b/drivers/s390/block/dasd.c @@ -7,7 +7,7 @@ * Bugreports.to..: * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999-2001 * - * $Revision: 1.167 $ + * $Revision: 1.172 $ */ #include @@ -604,7 +604,7 @@ dasd_smalloc_request(char *magic, int cplength, int datasize, void dasd_kfree_request(struct dasd_ccw_req * cqr, struct dasd_device * device) { -#ifdef CONFIG_ARCH_S390X +#ifdef CONFIG_64BIT struct ccw1 *ccw; /* Clear any idals used for the request. */ @@ -1224,6 +1224,12 @@ __dasd_start_head(struct dasd_device * device) if (list_empty(&device->ccw_queue)) return; cqr = list_entry(device->ccw_queue.next, struct dasd_ccw_req, list); + /* check FAILFAST */ + if (device->stopped & ~DASD_STOPPED_PENDING && + test_bit(DASD_CQR_FLAGS_FAILFAST, &cqr->flags)) { + cqr->status = DASD_CQR_FAILED; + dasd_schedule_bh(device); + } if ((cqr->status == DASD_CQR_QUEUED) && (!device->stopped)) { /* try to start the first I/O that can be started */ @@ -1323,7 +1329,7 @@ void dasd_schedule_bh(struct dasd_device * device) { /* Protect against rescheduling. */ - if (atomic_compare_and_swap (0, 1, &device->tasklet_scheduled)) + if (atomic_cmpxchg (&device->tasklet_scheduled, 0, 1) != 0) return; dasd_get_device(device); tasklet_hi_schedule(&device->tasklet); @@ -1750,8 +1756,10 @@ dasd_exit(void) * SECTION: common functions for ccw_driver use */ -/* initial attempt at a probe function. this can be simplified once - * the other detection code is gone */ +/* + * Initial attempt at a probe function. this can be simplified once + * the other detection code is gone. + */ int dasd_generic_probe (struct ccw_device *cdev, struct dasd_discipline *discipline) @@ -1770,8 +1778,10 @@ dasd_generic_probe (struct ccw_device *cdev, return ret; } -/* this will one day be called from a global not_oper handler. - * It is also used by driver_unregister during module unload */ +/* + * This will one day be called from a global not_oper handler. + * It is also used by driver_unregister during module unload. + */ void dasd_generic_remove (struct ccw_device *cdev) { @@ -1798,9 +1808,11 @@ dasd_generic_remove (struct ccw_device *cdev) dasd_delete_device(device); } -/* activate a device. This is called from dasd_{eckd,fba}_probe() when either +/* + * Activate a device. This is called from dasd_{eckd,fba}_probe() when either * the device is detected for the first time and is supposed to be used - * or the user has started activation through sysfs */ + * or the user has started activation through sysfs. + */ int dasd_generic_set_online (struct ccw_device *cdev, struct dasd_discipline *discipline) @@ -1917,7 +1929,6 @@ dasd_generic_notify(struct ccw_device *cdev, int event) if (cqr->status == DASD_CQR_IN_IO) cqr->status = DASD_CQR_FAILED; device->stopped |= DASD_STOPPED_DC_EIO; - dasd_schedule_bh(device); } else { list_for_each_entry(cqr, &device->ccw_queue, list) if (cqr->status == DASD_CQR_IN_IO) { @@ -1927,6 +1938,7 @@ dasd_generic_notify(struct ccw_device *cdev, int event) device->stopped |= DASD_STOPPED_DC_WAIT; dasd_set_timer(device, 0); } + dasd_schedule_bh(device); ret = 1; break; case CIO_OPER: