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authorMichael S. Tsirkin <mst@redhat.com>2010-10-06 15:34:45 +0200
committerMichael S. Tsirkin <mst@redhat.com>2010-11-04 13:22:11 +0200
commit64e1c80748afca3b4818ebb232a9668bf529886d (patch)
tree80f0be16eaed7b4561c54e3f4a26138848b816f4 /drivers/vhost/vhost.c
parent533a19b4b88fcf81da3106b94f0ac4ac8b33a248 (diff)
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.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 9920bae6ee4..c17c881e235 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. */