| commit | d17cc7b7a7522c908636b32beee7537f64e3c043 | |
| author | Marta Rybczynska <mrybczyn@kalray.eu> | |
| Tue, 6 Jun 2017 11:27:21 +0000 (6 13:27 +0200) | ||
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | |
| Thu, 27 Jul 2017 22:08:03 +0000 (27 15:08 -0700) | ||
| tree | 0b6b1f608812048bfc4e74a750f961f35778205c | treesnapshot (tar.gz zip) |
| parent | 8f9dec0c2dbb99aa36fa2d242828d853abde8eb0 | commitdiff |
nvme-rdma: remove race conditions from IB signalling
commit 5e599d73c1c1816af07f94ddba879499aa39b43c upstream.
This patch improves the way the RDMA IB signalling is done by using atomic
operations for the signalling variable. This avoids race conditions on
sig_count.
The signalling interval changes slightly and is now the largest power of
two not larger than queue depth / 2.
ilog() usage idea by Bart Van Assche.
Signed-off-by: Marta Rybczynska <marta.rybczynska@kalray.eu>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5e599d73c1c1816af07f94ddba879499aa39b43c upstream.
This patch improves the way the RDMA IB signalling is done by using atomic
operations for the signalling variable. This avoids race conditions on
sig_count.
The signalling interval changes slightly and is now the largest power of
two not larger than queue depth / 2.
ilog() usage idea by Bart Van Assche.
Signed-off-by: Marta Rybczynska <marta.rybczynska@kalray.eu>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| drivers/nvme/host/rdma.c | diffblobblamehistory |