diff options
Diffstat (limited to 'src/backend/storage/buffer/bufmgr.c')
| -rw-r--r-- | src/backend/storage/buffer/bufmgr.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c index 43eb7d59f46..c6b033cf417 100644 --- a/src/backend/storage/buffer/bufmgr.c +++ b/src/backend/storage/buffer/bufmgr.c @@ -1982,9 +1982,13 @@ FlushBuffer(volatile BufferDesc *buf, SMgrRelation reln) * have been able to write it while we were busy with log flushing because * we have the io_in_progress lock. */ - bufBlock = BufHdrGetBlock(buf); + /* + * Update page checksum if desired. Since we have only shared lock on the + * buffer, other processes might be updating hint bits in it, so we must + * copy the page to private storage if we do checksumming. + */ bufToWrite = PageSetChecksumCopy((Page) bufBlock, buf->tag.blockNum); if (track_io_timing) |