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mdbx: fix shrinking below a lower-bound.

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Change-Id: Ia6d497e2d7c6d7ee646b23b8df944a01d96445fc
This commit is contained in:
Leo Yuriev 2017-09-26 19:36:51 +03:00
parent 86a15f4ef1
commit dc31d7d1a3
1 changed files with 5 additions and 3 deletions
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8
src/mdbx.c
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@ -4050,9 +4050,11 @@ static int mdbx_sync_locked(MDBX_env *env, unsigned flags,
pending->mm_geo.grow ? pending->mm_geo.grow : pending->mm_geo.shrink;
const pgno_t aligned = pgno_align2os_pgno(
env, pending->mm_geo.next + aligner - pending->mm_geo.next % aligner);
if (pending->mm_geo.now > aligned) {
shrink = pending->mm_geo.now - aligned;
pending->mm_geo.now = aligned;
const pgno_t bottom =
(aligned > pending->mm_geo.lower) ? aligned : pending->mm_geo.lower;
if (pending->mm_geo.now > bottom) {
shrink = pending->mm_geo.now - bottom;
pending->mm_geo.now = bottom;
if (mdbx_meta_txnid_stable(env, head) == pending->mm_txnid_a)
mdbx_meta_set_txnid(env, pending, pending->mm_txnid_a + 1);
}