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ITS#8321 don't skip fixups on splitting cursors

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Adjustments can't be skipped, in recursive calls each level must
fixup their own level.
This commit is contained in:
Howard Chu 2015-11-23 01:07:57 +00:00
parent 91dc62506b
commit 8773a08c43
1 changed files with 0 additions and 5 deletions
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5
libraries/liblmdb/mdb.c
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@ -1161,7 +1161,6 @@ struct MDB_cursor {
#define C_EOF 0x02 /**< No more data */ #define C_EOF 0x02 /**< No more data */
#define C_SUB 0x04 /**< Cursor is a sub-cursor */ #define C_SUB 0x04 /**< Cursor is a sub-cursor */
#define C_DEL 0x08 /**< last op was a cursor_del */ #define C_DEL 0x08 /**< last op was a cursor_del */
#define C_SPLITTING 0x20 /**< Cursor is in page_split */
#define C_UNTRACK 0x40 /**< Un-track cursor when closing */ #define C_UNTRACK 0x40 /**< Un-track cursor when closing */
/** @} */ /** @} */
unsigned int mc_flags; /**< @ref mdb_cursor */ unsigned int mc_flags; /**< @ref mdb_cursor */
@ -8314,7 +8313,6 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
DPRINTF(("parent branch page is %"Z"u", mc->mc_pg[ptop]->mp_pgno)); DPRINTF(("parent branch page is %"Z"u", mc->mc_pg[ptop]->mp_pgno));
} }
mc->mc_flags |= C_SPLITTING;
mdb_cursor_copy(mc, &mn); mdb_cursor_copy(mc, &mn);
mn.mc_pg[mn.mc_top] = rp; mn.mc_pg[mn.mc_top] = rp;
mn.mc_ki[ptop] = mc->mc_ki[ptop]+1; mn.mc_ki[ptop] = mc->mc_ki[ptop]+1;
@ -8494,7 +8492,6 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
rc = mdb_node_add(&mn, mn.mc_ki[ptop], &sepkey, NULL, rp->mp_pgno, 0); rc = mdb_node_add(&mn, mn.mc_ki[ptop], &sepkey, NULL, rp->mp_pgno, 0);
mn.mc_top++; mn.mc_top++;
} }
mc->mc_flags ^= C_SPLITTING;
if (rc != MDB_SUCCESS) { if (rc != MDB_SUCCESS) {
goto done; goto done;
} }
@ -8615,8 +8612,6 @@ mdb_page_split(MDB_cursor *mc, MDB_val *newkey, MDB_val *newdata, pgno_t newpgno
m3->mc_snum++; m3->mc_snum++;
m3->mc_top++; m3->mc_top++;
} }
if (m3->mc_flags & C_SPLITTING)
continue;
if (m3->mc_top >= mc->mc_top && m3->mc_pg[mc->mc_top] == mp) { if (m3->mc_top >= mc->mc_top && m3->mc_pg[mc->mc_top] == mp) {
if (m3->mc_ki[mc->mc_top] >= newindx && !(nflags & MDB_SPLIT_REPLACE)) if (m3->mc_ki[mc->mc_top] >= newindx && !(nflags & MDB_SPLIT_REPLACE))
m3->mc_ki[mc->mc_top]++; m3->mc_ki[mc->mc_top]++;