fn fallocate(
        &self,
        ctx: Context,
        inode: Self::Inode,
        handle: Self::Handle,
        mode: u32,
        offset: u64,
        length: u64,
    ) -> io::Result<()> {
        Err(io::Error::from_raw_os_error(bindings::LINUX_ENOSYS))
    }
/// Allocate requested space for file data.
///
/// If this function returns success, then the file sytem must guarantee that it is possible to
/// write up to `length` bytes of data starting at `offset` without failing due to a lack of
/// free space on the disk.
///
/// `handle` is the `Handle` returned by the file system from the `open` method, if any. If the
/// file system did not return a `Handle` from `open` then the contents of `handle` are
/// undefined.
///
/// If this method returns an `ENOSYS` error then the kernel will treat that as a permanent
/// failure: all future calls to `fallocate` will fail with `EOPNOTSUPP` without being forwarded
/// to the file system.
Allocate requested space for file data.
If this function returns success, then the file sytem must guarantee that it is possible to
write up to `length` bytes of data starting at `offset` without failing due to a lack of
free space on the disk.




Allocate requested space for file data . If this function returns success then the file sytem must guarantee that it is possible to write up to ` length ` bytes of data starting at ` offset ` without failing due to a lack of free space on the disk .
fn fallocate(
        &self,
        ctx: Context,
        inode: Self::Inode,
        handle: Self::Handle,
        mode: u32,
        offset: u64,
        length: u64,
    ) -> io::Result<()> {
        Err(io::Error::from_raw_os_error(bindings::LINUX_ENOSYS))
    }
fn fallocate ( & self , ctx : Context , inode : Self :: Inode , handle : Self :: Handle , mode : u32 , offset : u64 , length : u64 , ) -> io :: Result < ( ) > { Err ( io :: Error :: from_raw_os_error ( bindings :: LINUX_ENOSYS ) ) }
Allocate requested space for file data.
Allocate requested space for file data .
&self
ctx
Context
inode
Self::Inode
handle
Self::Handle
mode
u32
offset
u64
length
u64