Commitee4673a

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Don't exaggerate the number of temporary blocks read.

A read that returns zero bytes (or an error) should not incrementthe number of temporary blocks read.Thomas MunroDiscussion:http://postgr.es/m/CAEepm=21xgihg=WaG+O5MFotEZfN6kFETpfw+RkSnEqNQqGn2Q@mail.gmail.com

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Lines changed: 2 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -264,7 +264,8 @@ BufFileLoadBuffer(BufFile *file)`
`264`	`264`	`file->offsets[file->curFile]+=file->nbytes;`
`265`	`265`	`/* we choose not to advance curOffset here */`
`266`	`266`
`267`		`-pgBufferUsage.temp_blks_read++;`
	`267`	`+if (file->nbytes>0)`
	`268`	`+pgBufferUsage.temp_blks_read++;`
`268`	`269`	`}`
`269`	`270`
`270`	`271`	`/*`

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