From 7a5a78ef0c1f8b8e6dfd9cb1aab97c6f1994c0b0 Mon Sep 17 00:00:00 2001 From: Howard Chu Date: Wed, 4 Nov 2015 21:01:30 +0000 Subject: [PATCH] ITS#8300 fix node_move Don't adjust other cursors when we added a node on the right. --- libraries/liblmdb/mdb.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c index eecb547..0054f62 100644 --- a/libraries/liblmdb/mdb.c +++ b/libraries/liblmdb/mdb.c @@ -7719,16 +7719,19 @@ mdb_node_move(MDB_cursor *csrc, MDB_cursor *cdst) MDB_dbi dbi = csrc->mc_dbi; MDB_page *mp; - mp = cdst->mc_pg[csrc->mc_top]; - for (m2 = csrc->mc_txn->mt_cursors[dbi]; m2; m2=m2->mc_next) { - if (csrc->mc_flags & C_SUB) - m3 = &m2->mc_xcursor->mx_cursor; - else - m3 = m2; - if (m3 == cdst) continue; - if (m3->mc_pg[csrc->mc_top] == mp && m3->mc_ki[csrc->mc_top] >= - cdst->mc_ki[csrc->mc_top]) { - m3->mc_ki[csrc->mc_top]++; + /* If we're adding on the left, bump others up */ + if (!cdst->mc_ki[csrc->mc_top]) { + mp = cdst->mc_pg[csrc->mc_top]; + for (m2 = csrc->mc_txn->mt_cursors[dbi]; m2; m2=m2->mc_next) { + if (csrc->mc_flags & C_SUB) + m3 = &m2->mc_xcursor->mx_cursor; + else + m3 = m2; + if (m3 == cdst) continue; + if (m3->mc_pg[csrc->mc_top] == mp && m3->mc_ki[csrc->mc_top] >= + cdst->mc_ki[csrc->mc_top]) { + m3->mc_ki[csrc->mc_top]++; + } } }