diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2018-09-14 18:10:17 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-09-25 20:33:24 +0200 |
| commit | ae6935ed7d424ffa74d634da00767e7b03c98fd3 (patch) | |
| tree | d26a4096301a8555277b50eb9741bcb978a308b2 /drivers/hv/ring_buffer.c | |
| parent | vmbus: keep pointer to ring buffer page (diff) | |
| download | linux-ae6935ed7d424ffa74d634da00767e7b03c98fd3.tar.xz linux-ae6935ed7d424ffa74d634da00767e7b03c98fd3.zip | |
vmbus: split ring buffer allocation from open
The UIO driver needs the ring buffer to be persistent(reused)
across open/close. Split the allocation and setup of ring buffer
out of vmbus_open. For normal usage vmbus_open/vmbus_close there
are no changes; only impacts uio_hv_generic which needs to keep
ring buffer memory and reuse when application restarts.
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv/ring_buffer.c')
| -rw-r--r-- | drivers/hv/ring_buffer.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 3e90eb91db45..64d0c85d5161 100644 --- a/drivers/hv/ring_buffer.c +++ b/drivers/hv/ring_buffer.c @@ -241,6 +241,7 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info, void hv_ringbuffer_cleanup(struct hv_ring_buffer_info *ring_info) { vunmap(ring_info->ring_buffer); + ring_info->ring_buffer = NULL; } /* Write to the ring buffer. */ |