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	.Os			.Os
	.Sh NAME			.Sh NAME
	.Nm VOP_ALLOCATE			.Nm VOP_ALLOCATE
	.Nd allocate storage for a file			.Nd allocate storage for a file
	.Sh SYNOPSIS			.Sh SYNOPSIS
	.In sys/param.h			.In sys/param.h
	.In sys/vnode.h			.In sys/vnode.h
	.Ft int			.Ft int
	.Fn VOP_ALLOCATE "struct vnode vp" "off_t offset" "off_t *len"			.Fn VOP_ALLOCATE "struct vnode vp" "off_t offset" "off_t len" "int flags" "struct ucred cred"
	.Sh DESCRIPTION			.Sh DESCRIPTION
	This call allocates storage for a range of offsets in a file.			This call allocates storage for a range of offsets in a file.
	It is used to implement the			It is used to implement the
	.Xr posix_fallocate			.Xr posix_fallocate
	system call.			system call.
	.Pp			.Pp
	Its arguments are:			Its arguments are:
	.Bl -tag -width offset			.Bl -tag -width offset
	.It Fa vp			.It Fa vp
	The vnode of the file.			The vnode of the file.
	.It Fa offset			.It Fa offset
	The start of the range to allocate storage for in the file.			The start of the range to allocate storage for in the file.
	.It Fa len			.It Fa len
	The length of the range to allocate storage for in the file.			The length of the range to allocate storage for in the file.
				.It Fa flags
				The parameter to control the behavior of this call.
	.El			.El
	.Pp			.Pp
	The			The
	.Fa offset			.Fa offset
	and			and
	.Fa len			.Fa len
	arguments are updated to reflect the portion of the range that			arguments are updated to reflect the portion of the range that
	still needs to be allocated on return.			still needs to be allocated on return.
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