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Fix mdb_page_split - nested split

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If updating a page's separator triggers a split in its parent,
we may have missed adjusting the parent's cursor position.
This commit is contained in:
Howard Chu 2013-05-14 16:57:50 -07:00
parent 1105aa35ba
commit 7233bc295b
1 changed files with 11 additions and 0 deletions
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11
libraries/liblmdb/mdb.c
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@ -6933,6 +6933,17 @@ newsep:
}
} else {
mc->mc_ki[ptop]++;
/* Make sure mc_ki is still valid.
*/
if (mn.mc_pg[ptop] != mc->mc_pg[ptop] &&
mc->mc_ki[ptop] >= NUMKEYS(mc->mc_pg[ptop])) {
for (i=0; i<ptop; i++) {
mc->mc_pg[i] = mn.mc_pg[i];
mc->mc_ki[i] = mn.mc_ki[i];
}
mc->mc_pg[ptop] = mn.mc_pg[ptop];
mc->mc_ki[ptop] = mn.mc_ki[ptop] - 1;
}
}
/* return tmp page to freelist */