diff options
| author | santosh.shilimkar@oracle.com <santosh.shilimkar@oracle.com> | 2016-04-14 10:43:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-04-16 19:01:05 -0400 |
| commit | e47db94e10447fc467777a40302f2b393e9af2fa (patch) | |
| tree | 4c7df86e01d04d5ba6ec19a764807ca6b5a92261 /arch/x86/power | |
| parent | a7c556546f610a331c22cb7edd9d1afe63f0cd52 (diff) | |
| download | linux-e47db94e10447fc467777a40302f2b393e9af2fa.tar.bz2 | |
RDS: Fix the atomicity for congestion map update
Two different threads with different rds sockets may be in
rds_recv_rcvbuf_delta() via receive path. If their ports
both map to the same word in the congestion map, then
using non-atomic ops to update it could cause the map to
be incorrect. Lets use atomics to avoid such an issue.
Full credit to Wengang <wen.gang.wang@oracle.com> for
finding the issue, analysing it and also pointing out
to offending code with spin lock based fix.
Reviewed-by: Leon Romanovsky <leon@leon.nu>
Signed-off-by: Wengang Wang <wen.gang.wang@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/power')
0 files changed, 0 insertions, 0 deletions