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mdbx: backport - don't shrink DB less largest reader inside mdbx_env_set_geometry().

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Change-Id: I42a5d3a08313fb9590a6730bc0dc06c7b4f16634
This commit is contained in:
Leonid Yuriev 2019-08-22 22:33:18 +03:00
parent 45487eb052
commit 78e354689e
1 changed files with 6 additions and 1 deletions
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7
src/mdbx.c
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@ -5270,6 +5270,10 @@ LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower,
need_unlock = true;
}
MDBX_meta *head = mdbx_meta_head(env);
if (!inside_txn) {
env->me_txn0->mt_txnid = meta_txnid(env, head, false);
mdbx_find_oldest(env->me_txn0);
}
if (pagesize < 0)
pagesize = env->me_psize;
@ -5289,7 +5293,8 @@ LIBMDBX_API int mdbx_env_set_geometry(MDBX_env *env, intptr_t size_lower,
if (shrink_threshold < 0)
shrink_threshold = pgno2bytes(env, head->mm_geo.shrink);
const size_t usedbytes = pgno2bytes(env, head->mm_geo.next);
const size_t usedbytes =
pgno2bytes(env, mdbx_find_largest(env, head->mm_geo.next));
if ((size_t)size_upper < usedbytes) {
rc = MDBX_MAP_FULL;
goto bailout;