On Thu, Nov 13, 2014 at 10:23:28PM +0100, Pieter Smith wrote: > Compile out splice support from mem character driver when the splice-family of > syscalls is not supported by the system (i.e. CONFIG_SYSCALL_SPLICE is > undefined). > > add/remove: 0/2 grow/shrink: 0/0 up/down: 0/-28 (-28) > function old new delta > pipe_to_null 4 - -4 > splice_write_null 24 - -24 > > Signed-off-by: Pieter Smith <[email protected]> > --- > drivers/char/mem.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/char/mem.c b/drivers/char/mem.c > index 917403f..420d651 100644 > --- a/drivers/char/mem.c > +++ b/drivers/char/mem.c > @@ -610,6 +610,7 @@ static ssize_t aio_write_null(struct kiocb *iocb, const > struct iovec *iov, > return iov_length(iov, nr_segs); > } > > +#ifdef CONFIG_SYSCALL_SPLICE > static int pipe_to_null(struct pipe_inode_info *info, struct pipe_buffer > *buf, > struct splice_desc *sd) > { > @@ -621,6 +622,7 @@ static ssize_t splice_write_null(struct pipe_inode_info > *pipe, struct file *out, > { > return splice_from_pipe(pipe, out, ppos, len, flags, pipe_to_null); > } > +#endif /* #ifdef CONFIG_SYSCALL_SPLICE */ >
Ick, no, not worth the #ifdef mess, sorry. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
