From fce5c8c967212f7cedd591633e0532a51d146601 Mon Sep 17 00:00:00 2001
From: Jan Wassenberg <janwas@google.com>
Date: Thu, 7 Mar 2024 22:18:46 -0800
Subject: [PATCH] Avoid fadvise on older Android. Fixes #84

PiperOrigin-RevId: 613815953
---
 compression/blob_store.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compression/blob_store.cc b/compression/blob_store.cc
index e088fc6..050dfbd 100644
--- a/compression/blob_store.cc
+++ b/compression/blob_store.cc
@@ -341,7 +341,7 @@ BlobError BlobReader::Open(const char* filename) {
 #endif
   if (fd_ < 0) return __LINE__;
 
-#if HWY_OS_LINUX
+#if HWY_OS_LINUX && (!defined(__ANDROID_API__) || __ANDROID_API__ >= 21)
   // Doubles the readahead window, which seems slightly faster when cached.
   (void)posix_fadvise(fd_, 0, 0, POSIX_FADV_SEQUENTIAL);
 #endif