diff options
| -rw-r--r-- | src/backend/access/gin/ginxlog.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/src/backend/access/gin/ginxlog.c b/src/backend/access/gin/ginxlog.c index 0d58d4830e6..2fc65e39c28 100644 --- a/src/backend/access/gin/ginxlog.c +++ b/src/backend/access/gin/ginxlog.c @@ -699,26 +699,26 @@ ginRedoDeleteListPages(XLogRecPtr lsn, XLogRecord *record) * cannot get past a reader that is on, or due to visit, any page we are * going to delete. New incoming readers will block behind our metapage * lock and then see a fully updated page list. + * + * No full-page images are taken of the deleted pages. Instead, they are + * re-initialized as empty, deleted pages. Their right-links don't need to + * be preserved, because no new readers can see the pages, as explained + * above. */ for (i = 0; i < data->ndeleted; i++) { - Buffer buffer = XLogReadBuffer(data->node, data->toDelete[i], false); + Buffer buffer; + Page page; - if (BufferIsValid(buffer)) - { - Page page = BufferGetPage(buffer); - - if (!XLByteLE(lsn, PageGetLSN(page))) - { - GinPageGetOpaque(page)->flags = GIN_DELETED; + buffer = XLogReadBuffer(data->node, data->toDelete[i], true); + page = BufferGetPage(buffer); + GinInitBuffer(buffer, GIN_DELETED); - PageSetLSN(page, lsn); - PageSetTLI(page, ThisTimeLineID); - MarkBufferDirty(buffer); - } + PageSetLSN(page, lsn); + PageSetTLI(page, ThisTimeLineID); + MarkBufferDirty(buffer); - UnlockReleaseBuffer(buffer); - } + UnlockReleaseBuffer(buffer); } UnlockReleaseBuffer(metabuffer); } |