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VFS_SYNC(9) Kernel Developer's Manual VFS_SYNC(9)

NAME

VFS_SYNC —
flush unwritten data

SYNOPSIS

#include <sys/param.h>
#include <sys/mount.h>
#include <sys/vnode.h>

int
VFS_SYNC(struct mount *mp, int waitfor);

DESCRIPTION

The VFS_SYNC() macro writes out all unwritten data in the file system mounted as mp.

The arguments it expects are:

mp
The file system.
waitfor
Whether the function should wait for I/O to complete. Possible values are:
synchronously wait for I/O to complete
start all I/O, but do not wait for it
push data not written by file system syncer

The VFS_SYNC() macro calls the vfs_sync method of the file system, which normally calls VOP_FSYNC(9) for all the vnodes in the file system.

SEE ALSO

fsync(2), sync(2), VFS(9), vnode(9), VOP_FSYNC(9)

AUTHORS

This manual page was written by Doug Rabson.
May 23, 2009 Linux 4.19.0-10-amd64