Re: Buffer Cache Problem

[jacktby jacktby]

In the bus_internal.h,I see
====================================================
 Note: Buffer header lock (BM_LOCKED flag) must be held to examine or change  
tag, state or wait_backend_pgprocno fields.
====================================================
As we all know, this buffer header lock is implemented by a bit in state filed, 
and this state field is a atomic_u32 type, so in fact we don’t need to 
hold buffer lock when we update state, this comment has error，right?