why don't unlock_buffer call directly clear_and_wake_up_bit?
shuo chen <[email protected]> Sat, 21 Mar 2026 07:54:39 +0000
| Newsgroups | org.kernelnewbies.kernelnewbies |
|---|---|
| Message-ID | <[email protected]> |
The unlock_buffer and clear_and_wake_up_bit call same the three function in the same sequence:
1.clear_bit_unlock
2.smp_mb__after_atomic
3.wake_up_bit
So why don't unlock_buffer write the fllowing:
void unlock_buffer(struct buffer_head *bh)
{
clear_and_wake_up_bit(BH_Lock,&bh->b_state);
}
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