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| author |   Michael S. Tsirkin <mst@redhat.com> | 2018-01-26 01:36:29 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-29 12:02:53 -0500 |
| commit | a259df36d1fbf25f0e4f649fdb84e4527e5640ed (patch) | |
| tree | a5a2c6d057c491dc2235cd443e1bf7a6823d74b2 /drivers/net/tap.c | |
| parent | ptr_ring: clean up documentation (diff) | |
| download | linux-dev-a259df36d1fbf25f0e4f649fdb84e4527e5640ed.tar.xz linux-dev-a259df36d1fbf25f0e4f649fdb84e4527e5640ed.zip | |
ptr_ring: READ/WRITE_ONCE for __ptr_ring_empty
Lockless __ptr_ring_empty requires that consumer head is read and
written at once, atomically. Annotate accordingly to make sure compiler
does it correctly. Switch locked callers to __ptr_ring_peek which does
not support the lockless operation.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/tap.c')
0 files changed, 0 insertions, 0 deletions