diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blktrace.c | 10 | ||||
| -rw-r--r-- | block/genhd.c | 2 |
2 files changed, 6 insertions, 6 deletions
diff --git a/block/blktrace.c b/block/blktrace.c index 7ae87cc4a163..8d3a27780260 100644 --- a/block/blktrace.c +++ b/block/blktrace.c @@ -79,16 +79,17 @@ void __trace_note_message(struct blk_trace *bt, const char *fmt, ...) { int n; va_list args; + unsigned long flags; char *buf; - preempt_disable(); + local_irq_save(flags); buf = per_cpu_ptr(bt->msg_data, smp_processor_id()); va_start(args, fmt); n = vscnprintf(buf, BLK_TN_MAX_MSG, fmt, args); va_end(args); trace_note(bt, 0, BLK_TN_MESSAGE, buf, n); - preempt_enable(); + local_irq_restore(flags); } EXPORT_SYMBOL_GPL(__trace_note_message); @@ -158,10 +159,7 @@ void __blk_add_trace(struct blk_trace *bt, sector_t sector, int bytes, /* * A word about the locking here - we disable interrupts to reserve * some space in the relay per-cpu buffer, to prevent an irq - * from coming in and stepping on our toes. Once reserved, it's - * enough to get preemption disabled to prevent read of this data - * before we are through filling it. get_cpu()/put_cpu() does this - * for us + * from coming in and stepping on our toes. */ local_irq_save(flags); diff --git a/block/genhd.c b/block/genhd.c index 129ad939f9dd..b922d4801c87 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -660,6 +660,8 @@ dev_t blk_lookup_devt(const char *name, int part) mutex_lock(&block_class_lock); list_for_each_entry(dev, &block_class.devices, node) { + if (dev->type != &disk_type) + continue; if (strcmp(dev->bus_id, name) == 0) { struct gendisk *disk = dev_to_disk(dev); |