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VFS_SYNC (9) | Kernel routines | Unix Manual Pages | :man▋
NAME
VFS_SYNC - flush unwritten data
CONTENTS
Synopsis
Description
See Also
Authors
SYNOPSIS
.In sys/param.h
.In sys/mount.h
.In sys/vnode.h int VFS_SYNC "struct mount *mp" "int waitfor" "struct ucred *cred" "struct thread *td"
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: | |
| MNT_WAIT | synchronously wait for I/O to complete | | MNT_NOWAIT | | | start all I/O, but do not wait for it | | MNT_LAZY | push data not written by file system syncer | |
| cred | The caller’s credentials. | | td | The calling thread. | |
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
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