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ITS#8300 fix node_move

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Don't adjust other cursors when we added a node on the right.
This commit is contained in:
Howard Chu 2015-11-04 21:01:30 +00:00
parent af45cf3a04
commit 9fc7c94aeb
1 changed files with 13 additions and 10 deletions
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23
libraries/liblmdb/mdb.c
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@ -7598,16 +7598,19 @@ 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]++;
}
}
}