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| author | Michael S. Tsirkin <mst@redhat.com> | 2010-10-06 15:34:45 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2010-11-04 13:22:11 +0200 |
| commit | 64e1c80748afca3b4818ebb232a9668bf529886d (patch) | |
| tree | 80f0be16eaed7b4561c54e3f4a26138848b816f4 /drivers/vhost/vhost.c | |
| parent | 533a19b4b88fcf81da3106b94f0ac4ac8b33a248 (diff) | |
| download | lwn-64e1c80748afca3b4818ebb232a9668bf529886d.tar.gz lwn-64e1c80748afca3b4818ebb232a9668bf529886d.zip | |
vhost-net: batch use/unuse mm
Move use/unuse mm to vhost.c which makes it possible to batch these
operations.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.c')
| -rw-r--r-- | drivers/vhost/vhost.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 9920bae6ee43..c17c881e235a 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -15,6 +15,7 @@ #include <linux/vhost.h> #include <linux/virtio_net.h> #include <linux/mm.h> +#include <linux/mmu_context.h> #include <linux/miscdevice.h> #include <linux/mutex.h> #include <linux/rcupdate.h> @@ -177,6 +178,8 @@ static int vhost_worker(void *data) struct vhost_work *work = NULL; unsigned uninitialized_var(seq); + use_mm(dev->mm); + for (;;) { /* mb paired w/ kthread_stop */ set_current_state(TASK_INTERRUPTIBLE); @@ -191,7 +194,7 @@ static int vhost_worker(void *data) if (kthread_should_stop()) { spin_unlock_irq(&dev->work_lock); __set_current_state(TASK_RUNNING); - return 0; + break; } if (!list_empty(&dev->work_list)) { work = list_first_entry(&dev->work_list, @@ -209,6 +212,8 @@ static int vhost_worker(void *data) schedule(); } + unuse_mm(dev->mm); + return 0; } /* Helper to allocate iovec buffers for all vqs. */ |