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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2007-04-12 17:10:55 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2007-04-12 17:10:55 +0000 |
| commit | 995ba280c153aec43a01bd2f2e1f8a74203e04d9 (patch) | |
| tree | c68e89e42ab1b6f07b4263ae1106651ee72e90f5 /src/tutorial/basics.source | |
| parent | ebb6bae539e124c34674ecf0d0f387e0a873c314 (diff) | |
| download | postgresql-995ba280c153aec43a01bd2f2e1f8a74203e04d9.tar.gz postgresql-995ba280c153aec43a01bd2f2e1f8a74203e04d9.zip | |
Rearrange mdsync() looping logic to avoid the problem that a sufficiently
fast flow of new fsync requests can prevent mdsync() from ever completing.
This was an unforeseen consequence of a patch added in Mar 2006 to prevent
the fsync request queue from overflowing. Problem identified by Heikki
Linnakangas and independently by ITAGAKI Takahiro; fix based on ideas from
Takahiro-san, Heikki, and Tom.
Back-patch as far as 8.1 because a previous back-patch introduced the problem
into 8.1 ...
Diffstat (limited to 'src/tutorial/basics.source')
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