diff options
| author | Javier González <javier@cnexlabs.com> | 2018-10-09 13:11:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-13 11:08:21 -0800 |
| commit | 013b559adfc09cb569086c4cee08235e501381f2 (patch) | |
| tree | 7a59edaf2a24fc85de80677ad1edee02322bf44a /tools | |
| parent | 3c5b1d33fc908f3c7b947bbe3bf88ca5b95268f0 (diff) | |
lightnvm: pblk: fix race condition on metadata I/O
[ Upstream commit d8adaa3b86324c6186d0adf74bc256bdacfffdb6 ]
In pblk, when a new line is allocated, metadata for the previously
written line is scheduled. This is done through a fixed memory region
that is shared through time and contexts across different lines and
therefore protected by a lock. Unfortunately, this lock is not properly
covering all the metadata used for sharing this memory regions,
resulting in a race condition.
This patch fixes this race condition by protecting this metadata
properly.
Fixes: dd2a43437337 ("lightnvm: pblk: sched. metadata on write thread")
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <mb@lightnvm.io>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions