From: Zqiang qiang.zhang@linux.dev
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 qiang.zhang@linux.dev Reviewed-by: Joel Fernandes joelagnelf@nvidia.com Signed-off-by: Joel Fernandes joelagnelf@nvidia.com --- 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); }