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author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-05-26 23:20:18 +0400 |
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committer | David S. Miller <davem@davemloft.net> | 2010-05-27 11:30:53 +0400 |
commit | 8a74ad60a546b13bd1096b2a61a7a5c6fd9ae17c (patch) | |
tree | 3110e7e59883597b5d0f617e8507e15b8f965f3f /firmware/cis/NE2K.cis.ihex | |
parent | a56635a56f2afb3d22d9ce07e8f8d69537416b2d (diff) | |
download | linux-8a74ad60a546b13bd1096b2a61a7a5c6fd9ae17c.tar.xz |
net: fix lock_sock_bh/unlock_sock_bh
This new sock lock primitive was introduced to speedup some user context
socket manipulation. But it is unsafe to protect two threads, one using
regular lock_sock/release_sock, one using lock_sock_bh/unlock_sock_bh
This patch changes lock_sock_bh to be careful against 'owned' state.
If owned is found to be set, we must take the slow path.
lock_sock_bh() now returns a boolean to say if the slow path was taken,
and this boolean is used at unlock_sock_bh time to call the appropriate
unlock function.
After this change, BH are either disabled or enabled during the
lock_sock_bh/unlock_sock_bh protected section. This might be misleading,
so we rename these functions to lock_sock_fast()/unlock_sock_fast().
Reported-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'firmware/cis/NE2K.cis.ihex')
0 files changed, 0 insertions, 0 deletions