Re: [PATCH bpf-next v2 1/3] libbpf: use LFS (_FILE_OFFSET_BITS) instead of direct mmap2 syscall
From: Yonghong Song <hidden>
Date: 2019-08-16 00:07:40
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On 8/15/19 5:13 AM, Ivan Khoronzhuk wrote:
Drop __NR_mmap2 fork in flavor of LFS, that is _FILE_OFFSET_BITS=64 (glibc & bionic) / LARGEFILE64_SOURCE (for musl) decision. It allows mmap() to use 64bit offset that is passed to mmap2 syscall. As result pgoff is not truncated and no need to use direct access to mmap2 for 32 bits systems. Signed-off-by: Ivan Khoronzhuk <redacted>
Acked-by: Yonghong Song <redacted>