diff options
Diffstat (limited to 'drivers/block/aoe/aoeblk.c')
| -rw-r--r-- | drivers/block/aoe/aoeblk.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index 65deffde60a..a946929735a 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -12,6 +12,7 @@ #include <linux/slab.h> #include <linux/genhd.h> #include <linux/netdevice.h> +#include <linux/smp_lock.h> #include "aoe.h" static struct kmem_cache *buf_pool_cache; @@ -124,13 +125,16 @@ aoeblk_open(struct block_device *bdev, fmode_t mode) struct aoedev *d = bdev->bd_disk->private_data; ulong flags; + lock_kernel(); spin_lock_irqsave(&d->lock, flags); if (d->flags & DEVFL_UP) { d->nopen++; spin_unlock_irqrestore(&d->lock, flags); + unlock_kernel(); return 0; } spin_unlock_irqrestore(&d->lock, flags); + unlock_kernel(); return -ENODEV; } |