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Remove smgrdounlink() in smgr.c from the code tree

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The last caller of this routine was removed in b416691, and as a wise
man said one day, dead code tends to silently break.

Per discussion between Fujii Masao, Peter Geoghegan, Vignesh C and me.

Reported-by: Peter Geoghegan
Discussion: https://postgr.es/m/CAH2-Wz=sg5H8-vG4d5UmAofdcRMpeTDt2K-NUWp4GSfhenRGAQ@mail.gmail.com
This commit is contained in:
Michael Paquier 2020-05-10 10:58:54 +09:00
parent 9356e43544
commit e111c9f90a
2 changed files with 0 additions and 57 deletions
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56
src/backend/storage/smgr/smgr.c
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@ -335,59 +335,6 @@ smgrcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo)
smgrsw[reln->smgr_which].smgr_create(reln, forknum, isRedo); smgrsw[reln->smgr_which].smgr_create(reln, forknum, isRedo);
} }
/*
* smgrdounlink() -- Immediately unlink all forks of a relation.
*
* All forks of the relation are removed from the store. This should
* not be used during transactional operations, since it can't be undone.
*
* If isRedo is true, it is okay for the underlying file(s) to be gone
* already.
*/
void
smgrdounlink(SMgrRelation reln, bool isRedo)
{
RelFileNodeBackend rnode = reln->smgr_rnode;
int which = reln->smgr_which;
ForkNumber forknum;
/* Close the forks at smgr level */
for (forknum = 0; forknum <= MAX_FORKNUM; forknum++)
smgrsw[which].smgr_close(reln, forknum);
/*
* Get rid of any remaining buffers for the relation. bufmgr will just
* drop them without bothering to write the contents.
*/
DropRelFileNodesAllBuffers(&rnode, 1);
/*
* It'd be nice to tell the stats collector to forget it immediately, too.
* But we can't because we don't know the OID (and in cases involving
* relfilenode swaps, it's not always clear which table OID to forget,
* anyway).
*/
/*
* Send a shared-inval message to force other backends to close any
* dangling smgr references they may have for this rel. We should do this
* before starting the actual unlinking, in case we fail partway through
* that step. Note that the sinval message will eventually come back to
* this backend, too, and thereby provide a backstop that we closed our
* own smgr rel.
*/
CacheInvalidateSmgr(rnode);
/*
* Delete the physical file(s).
*
* Note: smgr_unlink must treat deletion failure as a WARNING, not an
* ERROR, because we've already decided to commit or abort the current
* xact.
*/
smgrsw[which].smgr_unlink(rnode, InvalidForkNumber, isRedo);
}
/* /*
* smgrdosyncall() -- Immediately sync all forks of all given relations * smgrdosyncall() -- Immediately sync all forks of all given relations
* *
@ -432,9 +379,6 @@ smgrdosyncall(SMgrRelation *rels, int nrels)
* *
* If isRedo is true, it is okay for the underlying file(s) to be gone * If isRedo is true, it is okay for the underlying file(s) to be gone
* already. * already.
*
* This is equivalent to calling smgrdounlink for each relation, but it's
* significantly quicker so should be preferred when possible.
*/ */
void void
smgrdounlinkall(SMgrRelation *rels, int nrels, bool isRedo) smgrdounlinkall(SMgrRelation *rels, int nrels, bool isRedo)

1
src/include/storage/smgr.h
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@ -88,7 +88,6 @@ extern void smgrclose(SMgrRelation reln);
extern void smgrcloseall(void); extern void smgrcloseall(void);
extern void smgrclosenode(RelFileNodeBackend rnode); extern void smgrclosenode(RelFileNodeBackend rnode);
extern void smgrcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo); extern void smgrcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
extern void smgrdounlink(SMgrRelation reln, bool isRedo);
extern void smgrdosyncall(SMgrRelation *rels, int nrels); extern void smgrdosyncall(SMgrRelation *rels, int nrels);
extern void smgrdounlinkall(SMgrRelation *rels, int nrels, bool isRedo); extern void smgrdounlinkall(SMgrRelation *rels, int nrels, bool isRedo);
extern void smgrextend(SMgrRelation reln, ForkNumber forknum, extern void smgrextend(SMgrRelation reln, ForkNumber forknum,