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Fixed bug where FlushRelationBuffers() did call StrategyInvalidateBuffer()

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for already empty buffers because their buffer tag was not cleard out
when the buffers have been invalidated before.

Also removed the misnamed BM_FREE bufhdr flag and replaced the checks,
which effectively ask if the buffer is unpinned, with checks against the
refcount field.

Jan
This commit is contained in:
Jan Wieck
2004-02-12 15:06:56 +00:00
parent 76f02b51b6
commit fc65a3e1fd
4 changed files with 41 additions and 127 deletions
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4
src/backend/storage/buffer/buf_init.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/buffer/buf_init.c,v 1.61 2004/01/15 16:14:26 wieck Exp $
* $PostgreSQL: pgsql/src/backend/storage/buffer/buf_init.c,v 1.62 2004/02/12 15:06:56 wieck Exp $
*
*-------------------------------------------------------------------------
*/
@ -164,7 +164,7 @@ InitBufferPool(void)
buf->buf_id = i;
buf->data = MAKE_OFFSET(block);
buf->flags = (BM_DELETED | BM_FREE | BM_VALID);
buf->flags = (BM_DELETED | BM_VALID);
buf->refcount = 0;
buf->io_in_progress_lock = LWLockAssign();
buf->cntx_lock = LWLockAssign();