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https://github.com/ceph/ceph
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3ce41446a6
We end up needing _GNU_SOURCE in a bunch of places-- to get direct i/o, pipe2, and some other Linux-specific interfaces. Signed-off-by: Colin McCabe <colin.mccabe@dreamhost.com>
35 lines
864 B
C
35 lines
864 B
C
// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
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// vim: ts=8 sw=2 smarttab
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/*
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* Ceph - scalable distributed file system
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*
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* Copyright (C) 2011 New Dream Network
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*
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* This is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software
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* Foundation. See file COPYING.
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*
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*/
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#ifndef CEPH_SYNC_FILESYSTEM_H
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#define CEPH_SYNC_FILESYSTEM_H
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#include <unistd.h>
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inline int sync_filesystem(int fd)
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{
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/* On Linux, newer versions of glibc have a function called syncfs that
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* performs a sync on only one filesystem. If we don't have this call, we
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* have to fall back on sync(), which synchronizes every filesystem on the
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* computer. */
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#ifdef HAVE_SYS_SYNCFS
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return syncfs(fd);
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#else
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sync();
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return 0;
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#endif
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}
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#endif
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