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fix: return 0 if page's already dirty

This commit is contained in:
Minglei Jin 2022-07-16 19:37:17 +08:00
parent c816f795cd
commit c6b2b2f98a
1 changed files with 7 additions and 0 deletions
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7
source/libs/tdb/src/db/tdbPager.c
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@ -174,6 +174,13 @@ int tdbPagerWrite(SPager *pPager, SPage *pPage) {
for (ppPage = &pPager->pDirty; (*ppPage) && TDB_PAGE_PGNO(*ppPage) < TDB_PAGE_PGNO(pPage); for (ppPage = &pPager->pDirty; (*ppPage) && TDB_PAGE_PGNO(*ppPage) < TDB_PAGE_PGNO(pPage);
ppPage = &((*ppPage)->pDirtyNext)) { ppPage = &((*ppPage)->pDirtyNext)) {
} }
if (*ppPage && TDB_PAGE_PGNO(*ppPage) == TDB_PAGE_PGNO(pPage)) {
tdbUnrefPage(pPage);
return 0;
}
ASSERT(*ppPage == NULL || TDB_PAGE_PGNO(*ppPage) > TDB_PAGE_PGNO(pPage)); ASSERT(*ppPage == NULL || TDB_PAGE_PGNO(*ppPage) > TDB_PAGE_PGNO(pPage));
pPage->pDirtyNext = *ppPage; pPage->pDirtyNext = *ppPage;
*ppPage = pPage; *ppPage = pPage;