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srcu: Use suitable gfp_flags for the init_srcu_struct_nodes()

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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>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Joel Fernandes <joelagnelf@nvidia.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
This commit is contained in:
Zqiang 2026-01-01 11:34:11 -05:00 committed by Boqun Feng
parent d41e37f26b
commit cee2557ae3
1 changed files with 1 additions and 1 deletions
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2
kernel/rcu/srcutree.c
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@ -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);
}