From 5aaeca258f5540ca5cd4a56758ef03faacb7716d Mon Sep 17 00:00:00 2001 From: Mike Christie Date: Wed, 19 May 2021 17:26:40 -0500 Subject: scsi: target: iblock: Fix smp_processor_id() BUG messages This has us use raw_smp_processor_id() in iblock's plug_device callout. smp_processor_id() is not needed here, because we are running from a per CPU work item that is also queued to run on a worker thread that is normally bound to a specific CPU. If the worker thread did end up switching CPUs then it's handled the same way we handle when the work got moved to a different CPU's worker thread, where we will just end up sending I/O from the new CPU. Link: https://lore.kernel.org/r/20210519222640.5153-1-michael.christie@oracle.com Fixes: 415ccd9811da ("scsi: target: iblock: Add backend plug/unplug callouts") Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen --- drivers/target/target_core_iblock.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/target') diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index d6fdd1c61f90..a526f9678c34 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -204,11 +204,11 @@ static struct se_dev_plug *iblock_plug_device(struct se_device *se_dev) struct iblock_dev_plug *ib_dev_plug; /* - * Each se_device has a per cpu work this can be run from. Wwe + * Each se_device has a per cpu work this can be run from. We * shouldn't have multiple threads on the same cpu calling this * at the same time. */ - ib_dev_plug = &ib_dev->ibd_plug[smp_processor_id()]; + ib_dev_plug = &ib_dev->ibd_plug[raw_smp_processor_id()]; if (test_and_set_bit(IBD_PLUGF_PLUGGED, &ib_dev_plug->flags)) return NULL; -- cgit v1.2.3