Обсуждение: pgsql: Use truncate(2) where appropriate.

Use truncate(2) where appropriate.

When truncating files by name, use truncate(2).  Windows hasn't got it,
so keep our previous coding based on ftruncate(2) as a fallback.

Discussion: https://postgr.es/m/16663-fe97ccf9932fc800%40postgresql.org

Branch
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master

Details
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https://git.postgresql.org/pg/commitdiff/57faaf376e1961fa48866c6e5d6926463c6671b1

Modified Files
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src/backend/storage/file/fd.c | 27 +++++++++++++++++++++++++++
src/backend/storage/smgr/md.c | 13 +------------
src/include/storage/fd.h      |  1 +
3 files changed, 29 insertions(+), 12 deletions(-)