On Fri, Jan 27, 2012 at 4:07 PM, Dan Scales <sca...@vmware.com> wrote:
> The advantage of putting the checksum calculation in smgrwrite() (or 
> mdwrite()) is that it catches a bunch of page writes that don't go through 
> the buffer pool (see calls to smgrwrite() in nbtree.c, nbtsort.c, spginsert.c)

Maybe we should have some sort of wrapper function, then.  I really
dislike the idea that the smgr layer knows anything about the page
format, and if md has to know that's even worse.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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