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linux: remove bug workaround for obsolete kernels (#3965)

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Libuv no longer supports such kernels so the workaround can be removed.
This commit is contained in:
Ben Noordhuis 2023-04-20 12:15:32 +02:00 committed by GitHub
parent dfae365f84
commit 1c935a3445
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1 changed files with 0 additions and 15 deletions
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15
src/unix/linux.c
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@ -876,15 +876,6 @@ static void uv__poll_io_uring(uv_loop_t* loop, struct uv__iou* iou) {
void uv__io_poll(uv_loop_t* loop, int timeout) {
/* A bug in kernels < 2.6.37 makes timeouts larger than ~30 minutes
* effectively infinite on 32 bits architectures. To avoid blocking
* indefinitely, we cap the timeout and poll again if necessary.
*
* Note that "30 minutes" is a simplification because it depends on
* the value of CONFIG_HZ. The magic constant assumes CONFIG_HZ=1200,
* that being the largest value I have seen in the wild (and only once.)
*/
static const int max_safe_timeout = 1789569;
uv__loop_internal_fields_t* lfields;
struct epoll_event events[1024];
struct epoll_event* pe;
@ -979,12 +970,6 @@ void uv__io_poll(uv_loop_t* loop, int timeout) {
if (timeout != 0)
uv__metrics_set_provider_entry_time(loop);
/* See the comment for max_safe_timeout for an explanation of why
* this is necessary. Executive summary: kernel bug workaround.
*/
if (sizeof(int32_t) == sizeof(long) && timeout >= max_safe_timeout)
timeout = max_safe_timeout;
nfds = epoll_pwait(loop->backend_fd,
events,
ARRAY_SIZE(events),