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mdbx: minor fix auto-readahead for buggy platforms (i.e. DragonflyBSD, NetBSD).

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This commit is contained in:
Leonid Yuriev 2019-11-08 14:55:46 +03:00
parent 6da4c1f06b
commit 51440b5542
1 changed files with 4 additions and 5 deletions
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7
src/elements/core.c
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@ -3595,12 +3595,11 @@ static __cold int mdbx_mapresize(MDBX_env *env, const pgno_t size_pgno,
rc = mdbx_mresize(env->me_flags, &env->me_dxb_mmap, size_bytes, limit_bytes);
if (rc == MDBX_SUCCESS && (env->me_flags & MDBX_NORDAHEAD) == 0) {
rc = mdbx_is_readahead_reasonable(size_bytes, 0);
if (rc == MDBX_RESULT_FALSE)
const int readahead = mdbx_is_readahead_reasonable(size_bytes, 0);
if (readahead == MDBX_RESULT_FALSE)
rc = mdbx_set_readahead(
env, 0, (size_bytes > prev_size) ? size_bytes : prev_size, false);
else if (rc == MDBX_RESULT_TRUE) {
rc = MDBX_SUCCESS;
else if (readahead == MDBX_RESULT_TRUE) {
const size_t readahead_pivot =
(limit_bytes != prev_limit || env->me_dxb_mmap.address != prev_addr
#if defined(_WIN32) || defined(_WIN64)