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mdbx: relax backlog estimation/preparation for freelist_save().

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Change-Id: I931b76179855c16cb8b6265db262309061ac196d
This commit is contained in:
Leo Yuriev 2017-07-25 19:08:25 +03:00
parent aa5403ad38
commit 684847db39
1 changed files with 3 additions and 2 deletions
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src/mdbx.c
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@ -2928,7 +2928,7 @@ static __inline int mdbx_backlog_size(MDBX_txn *txn) {
int reclaimed = txn->mt_env->me_reclaimed_pglist int reclaimed = txn->mt_env->me_reclaimed_pglist
? txn->mt_env->me_reclaimed_pglist[0] ? txn->mt_env->me_reclaimed_pglist[0]
: 0; : 0;
return reclaimed + txn->mt_loose_count; return reclaimed + txn->mt_loose_count + txn->mt_end_pgno - txn->mt_next_pgno;
} }
/* LY: Prepare a backlog of pages to modify FreeDB itself, /* LY: Prepare a backlog of pages to modify FreeDB itself,
@ -2943,7 +2943,8 @@ static int mdbx_prep_backlog(MDBX_txn *txn, MDBX_cursor *mc) {
if (unlikely(rc)) if (unlikely(rc))
return rc; return rc;
while (unlikely(mdbx_backlog_size(txn) < extra)) { int backlog;
while (unlikely((backlog = mdbx_backlog_size(txn)) < extra)) {
rc = mdbx_page_alloc(mc, 1, NULL, MDBX_ALLOC_GC); rc = mdbx_page_alloc(mc, 1, NULL, MDBX_ALLOC_GC);
if (unlikely(rc)) { if (unlikely(rc)) {
if (unlikely(rc != MDBX_NOTFOUND)) if (unlikely(rc != MDBX_NOTFOUND))