mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
nvmet: protect discovery change log event list iteration
When we iterate on the discovery subsystem controllers we need to protect against concurrent mutations to it. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Minwoo Im <minwoo.im@samsung.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
parent
893a74b7a7
commit
6f53e73b9e
1 changed files with 5 additions and 0 deletions
|
@ -30,14 +30,17 @@ void nvmet_port_disc_changed(struct nvmet_port *port,
|
|||
{
|
||||
struct nvmet_ctrl *ctrl;
|
||||
|
||||
lockdep_assert_held(&nvmet_config_sem);
|
||||
nvmet_genctr++;
|
||||
|
||||
mutex_lock(&nvmet_disc_subsys->lock);
|
||||
list_for_each_entry(ctrl, &nvmet_disc_subsys->ctrls, subsys_entry) {
|
||||
if (subsys && !nvmet_host_allowed(subsys, ctrl->hostnqn))
|
||||
continue;
|
||||
|
||||
__nvmet_disc_changed(port, ctrl);
|
||||
}
|
||||
mutex_unlock(&nvmet_disc_subsys->lock);
|
||||
}
|
||||
|
||||
static void __nvmet_subsys_disc_changed(struct nvmet_port *port,
|
||||
|
@ -46,12 +49,14 @@ static void __nvmet_subsys_disc_changed(struct nvmet_port *port,
|
|||
{
|
||||
struct nvmet_ctrl *ctrl;
|
||||
|
||||
mutex_lock(&nvmet_disc_subsys->lock);
|
||||
list_for_each_entry(ctrl, &nvmet_disc_subsys->ctrls, subsys_entry) {
|
||||
if (host && strcmp(nvmet_host_name(host), ctrl->hostnqn))
|
||||
continue;
|
||||
|
||||
__nvmet_disc_changed(port, ctrl);
|
||||
}
|
||||
mutex_unlock(&nvmet_disc_subsys->lock);
|
||||
}
|
||||
|
||||
void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys,
|
||||
|
|
Loading…
Reference in a new issue