On 12/14/2025 5:14 AM, Zqiang wrote: > For use the init_srcu_struct*() to initialized srcu structure, > the srcu structure's->srcu_sup and sda use GFP_KERNEL flags to > allocate memory. similarly, if set SRCU_SIZING_INIT, the > srcu_sup's->node can still use GFP_KERNEL flags to allocate > memory, not need to use GFP_ATOMIC flags all the time. > > Signed-off-by: Zqiang <[email protected]>
Reviewed-by: Joel Fernandes <[email protected]> Will apply and send out to the list (soon) with other patches for further review and testing. - Joel > --- > kernel/rcu/srcutree.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c > index ea3f128de06f..c469c708fdd6 100644 > --- a/kernel/rcu/srcutree.c > +++ b/kernel/rcu/srcutree.c > @@ -262,7 +262,7 @@ static int init_srcu_struct_fields(struct srcu_struct > *ssp, bool is_static) > ssp->srcu_sup->srcu_gp_seq_needed_exp = SRCU_GP_SEQ_INITIAL_VAL; > ssp->srcu_sup->srcu_last_gp_end = ktime_get_mono_fast_ns(); > if (READ_ONCE(ssp->srcu_sup->srcu_size_state) == SRCU_SIZE_SMALL && > SRCU_SIZING_IS_INIT()) { > - if (!init_srcu_struct_nodes(ssp, GFP_ATOMIC)) > + if (!init_srcu_struct_nodes(ssp, is_static ? GFP_ATOMIC : > GFP_KERNEL)) > goto err_free_sda; > WRITE_ONCE(ssp->srcu_sup->srcu_size_state, SRCU_SIZE_BIG); > }
