Re: [PATCH 1/6] fs: add hole punching to fallocate

Jan Kara
2010-11-16T11:14:44Z

On Mon 15-11-10 12:05:18, Josef Bacik wrote:
> diff --git a/fs/open.c b/fs/open.c
> index 4197b9e..ab8dedf 100644
> --- a/fs/open.c
> +++ b/fs/open.c
> @@ -223,7 +223,7 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
> return -EINVAL;
>
> /* Return error if mode is not supported */
> - if (mode && !(mode & FALLOC_FL_KEEP_SIZE))
> + if (mode && (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)))
Why not just:
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) ?

> diff --git a/include/linux/falloc.h b/include/linux/falloc.h
> index 3c15510..851cba2 100644
> --- a/include/linux/falloc.h
> +++ b/include/linux/falloc.h
> @@ -2,6 +2,7 @@
> #define _FALLOC_H_
>
> #define FALLOC_FL_KEEP_SIZE 0x01 /* default is extend size */
> +#define FALLOC_FL_PUNCH_HOLE 0X02 /* de-allocates range */
^ use lowercase 'x' please...

Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR