linux-kernel - Re: [PATCH 1/4] statx: Add a system call to make enhanced file info available [ver #3]

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Message-ID: <20161204040026.GA32055@ZenIV.linux.org.uk>
Date:   Sun, 4 Dec 2016 04:00:33 +0000
From:   Al Viro <viro@...IV.linux.org.uk>
To:     David Howells <dhowells@...hat.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-api@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] statx: Add a system call to make enhanced file info
 available [ver #3]

On Wed, Nov 23, 2016 at 12:55:51AM +0000, David Howells wrote:

> -int vfs_getattr_nosec(struct path *path, struct kstat *stat)
> +int vfs_xgetattr_nosec(struct path *path, struct kstat *stat)

const struct path *, please.  Especially since we feed &file->f_path to
it.  And yes, I realize that the same applies to vfs_getattr() in the
current tree.

> +int vfs_xgetattr(struct path *path, struct kstat *stat)

Ditto.

> +int vfs_getattr(struct path *path, struct kstat *stat)

Again.

> +#define __put_timestamp(kts, uts) (				\
> +		__put_user(kts.tv_sec,	uts.tv_sec	) ||	\
> +		__put_user(kts.tv_nsec,	uts.tv_nsec	) ||		\
> +		__put_user(0,		uts.__reserved	))

static inline.

> +#define KSTAT_ATTR_FS_IOC_FLAGS		0x00000874 /* Attrs corresponding to FS_*_FL flags */

Err...  An explicit hex constant?