NAMEvfs_busy - marks a mount point as busy
SYNOPSIS#include <sys/param.h> #include <sys/mount.h> int vfs_busy(struct mount *mp, int flags);
DESCRIPTIONThe vfs_busy() function marks a mount point as busy by incrementing the reference count of a mount point. It also delays unmounting by sleeping on mp if the MNTK_UNMOUNT flag is set in mp->mnt_kern_flag and the MBF_NOWAIT flag is not set. Its arguments are: mp The mount point to busy. flags Flags controlling how vfs_busy() should act. MBF_NOWAIT do not sleep if MNTK_UNMOUNT is set. MBF_MNTLSTLOCK drop the mountlist_mtx in the critical path.
RETURN VALUESA 0 value is returned on success. If the mount point is being unmounted and MBF_NOWAIT flag is specified ENOENT will be returned.
ERRORS[ENOENT] The mount point is being unmounted (MNTK_UNMOUNT is set).
AUTHORSThis manual page was written by Chad David <email@example.com>. VFS_BUSY(9)