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author | David 'Digit' Turner <digit@android.com> | 2010-05-10 23:47:54 -0700 |
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committer | David 'Digit' Turner <digit@android.com> | 2010-05-11 17:59:35 -0700 |
commit | fd3b1a0e32964436a5259e073857e0c4e2110122 (patch) | |
tree | 6cd005834ebeabf4a46e7b2ec8c65a51c18f0a61 /cutils.c | |
parent | 9251866320b5f8329a043bb56b3a794f78d12849 (diff) | |
download | external_qemu-fd3b1a0e32964436a5259e073857e0c4e2110122.zip external_qemu-fd3b1a0e32964436a5259e073857e0c4e2110122.tar.gz external_qemu-fd3b1a0e32964436a5259e073857e0c4e2110122.tar.bz2 |
Upstream: add qemu_fdatasync()
Change-Id: I232b9c4df372e1fded97694fffcd72ef9ea113c4
Diffstat (limited to 'cutils.c')
-rw-r--r-- | cutils.c | 16 |
1 files changed, 16 insertions, 0 deletions
@@ -115,6 +115,22 @@ int qemu_fls(int i) return 32 - clz32(i); } +/* + * Make sure data goes on disk, but if possible do not bother to + * write out the inode just for timestamp updates. + * + * Unfortunately even in 2009 many operating systems do not support + * fdatasync and have to fall back to fsync. + */ +int qemu_fdatasync(int fd) +{ +#ifdef CONFIG_FDATASYNC + return fdatasync(fd); +#else + return fsync(fd); +#endif +} + /* io vectors */ void qemu_iovec_init(QEMUIOVector *qiov, int alloc_hint) |