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Better check for supported feature

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This commit is contained in:
Alexey Milovidov 2021-08-03 23:19:41 +03:00
parent fd3b5680e2
commit 425bf5d301
1 changed files with 4 additions and 4 deletions
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8
src/IO/ThreadPoolReader.h
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@ -106,9 +106,9 @@ public:
/// TODO ProfileEvents for page cache hits and misses.
/// We don't want to depend on new Linux kernel.
static std::atomic<bool> has_preadv2_syscall{true};
static std::atomic<bool> has_pread_nowait_support{true};
if (has_preadv2_syscall.load(std::memory_order_relaxed))
if (has_pread_nowait_support.load(std::memory_order_relaxed))
{
size_t bytes_read = 0;
while (!bytes_read)
@ -128,9 +128,9 @@ public:
if (-1 == res)
{
if (errno == ENOSYS)
if (errno == ENOSYS || errno == EOPNOTSUPP)
{
has_preadv2_syscall.store(false, std::memory_order_relaxed);
has_pread_nowait_support.store(false, std::memory_order_relaxed);
break;
}
else if (errno == EAGAIN)