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Send only one FORGET_RELATION_FSYNC request when dropping a relation.

author Tom Lane <tgl@sss.pgh.pa.us>

2012年7月19日 17:07:33 +0000 (13:07 -0400)

committer Tom Lane <tgl@sss.pgh.pa.us>

2012年7月19日 17:07:33 +0000 (13:07 -0400)

commit 3072b7bade26d4cf72ad453ad7d3323927b1ea64

tree 19325d6cbbfa27cb3df253084e659fc99b012ae7 tree

parent a7a4add6c4243cbcf50a554bce4c34cb72a344b5 commit | diff

Send only one FORGET_RELATION_FSYNC request when dropping a relation.

We were sending one per fork, but a little bit of refactoring allows us
to send just one request with forknum == InvalidForkNumber. This not only
reduces pressure on the shared-memory request queue, but saves repeated
traversals of the checkpointer's hash table.

src/backend/storage/smgr/md.c diff | blob | blame | history

src/backend/storage/smgr/smgr.c diff | blob | blame | history

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