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Move some md.c-specific logic from smgr.c to md.c.

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Potential future SMGR implementations may not want to create
tablespace directories when creating an SMGR relation.  Move that
logic to mdcreate().  Move the initialization of md-specific
data structures from smgropen() to a new callback mdopen().

Author: Thomas Munro
Reviewed-by: Shawn Debnath (as part of an earlier patch set)
Discussion: https://postgr.es/m/CA%2BhUKG%2BOZqOiOuDm5tC5DyQZtJ3FH4%2BFSVMqtdC4P1atpJ%2Bqhg%40mail.gmail.com
This commit is contained in:
Thomas Munro
2019-07-17 12:14:08 +12:00
parent 3093eb2b83
commit dfd0121dc7
3 changed files with 36 additions and 35 deletions
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src/include/storage/md.h
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@@ -21,6 +21,7 @@
/* md storage manager functionality */
extern void mdinit(void);
extern void mdopen(SMgrRelation reln);
extern void mdclose(SMgrRelation reln, ForkNumber forknum);
extern void mdcreate(SMgrRelation reln, ForkNumber forknum, bool isRedo);
extern bool mdexists(SMgrRelation reln, ForkNumber forknum);