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fix(mdbx): fix io_uring error reporting and cap ring size

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- Use strerror(-ret) instead of strerror(errno) for liburing errors
- Cap ring size at 32768 to avoid kernel limits
- Add debug logging for batch prefault
This commit is contained in:
joshieDo
2026-02-05 19:39:49 +00:00
parent dfe03a126f
commit f0882a5f8b
1 changed files with 9 additions and 2 deletions
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11
crates/storage/libmdbx-rs/mdbx-sys/libmdbx/mdbx.c vendored
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@@ -15916,12 +15916,19 @@ static void subtxn_batch_prefault_arena(MDBX_env *env, MDBX_txn **subtxns, size_
if (total_pages == 0)
return;
DEBUG("io_uring batch prefault: %zu pages across %zu subtxns", total_pages, count);
/* Get dirty pattern buffer (offset by ps*2 from page_auxbuf) */
void *const pattern = ptr_disp(env->page_auxbuf, env->ps * 2);
/* Cap ring size - kernel has limits, we'll submit in batches if needed */
const size_t ring_size = total_pages < 32768 ? total_pages : 32768;
struct io_uring ring;
if (io_uring_queue_init(total_pages, &ring, 0) < 0) {
FATAL("io_uring_queue_init failed: %s", strerror(errno));
int ret = io_uring_queue_init(ring_size, &ring, 0);
if (ret < 0) {
FATAL("io_uring_queue_init(%zu) failed: %s (total_pages=%zu)",
ring_size, strerror(-ret), total_pages);
abort();
}