Make use of xFetch, if it is available when doing a VACUUM or a backup.

xiexiemanyou · Apr 3, 2013 · f10b488 · f10b488
1 parent 1349126
commit f10b488
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/backup.c b/src/backup.c
@@ -397,7 +397,8 @@ int sqlite3_backup_step(sqlite3_backup *p, int nPage){
       const Pgno iSrcPg = p->iNext;                 /* Source page number */
       if( iSrcPg!=PENDING_BYTE_PAGE(p->pSrc->pBt) ){
         DbPage *pSrcPg;                             /* Source page object */
-        rc = sqlite3PagerGet(pSrcPager, iSrcPg, &pSrcPg);
+        rc = sqlite3PagerAcquire(pSrcPager, iSrcPg, &pSrcPg,
+                                 PAGER_ACQUIRE_READONLY);
         if( rc==SQLITE_OK ){
           rc = backupOnePage(p, iSrcPg, sqlite3PagerGetData(pSrcPg), 0);
           sqlite3PagerUnref(pSrcPg);