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From: Al Viro <viro@ZenIV.linux.org.uk>
To: Omar Sandoval <osandov@osandov.com>
Cc: linux-fsdevel@vger.kernel.org, linux-btrfs@vger.kernel.org,
ceph-devel@vger.kernel.org, linux-cifs@vger.kernel.org,
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v9fs-developer@lists.sourceforge.net, xfs@oss.sgi.com,
linux-kernel@vger.kernel.org, Chris Mason <clm@fb.com>,
Josef Bacik <jbacik@fb.com>, David Sterba <dsterba@suse.cz>,
Yan Zheng <zyan@redhat.com>, Sage Weil <sage@redhat.com>,
Steve French <sfrench@samba.org>,
Boaz Harrosh <ooo@electrozaur.com>,
Benny Halevy <bhalevy@primarydata.com>, Jan Kara <jack@suse.cz>,
"Theodore Ts'o" <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Jaegeuk Kim <jaegeuk@kernel.org>,
Changman Lee <cm224.lee@samsung.com>,
Miklos Szeredi <miklos@szeredi.hu>,
Steven Whitehouse <swhiteho@redhat.com>,
Dave Kleikamp <shaggy@kernel.org>,
Oleg Drokin <oleg.drokin@intel.com>,
Trond Myklebust <trond.myklebust@primarydata.com>,
Anna Schumaker <anna.schumaker@netapp.com>,
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>,
Mark Fasheh <mfasheh@suse.com>, Joel Becker <jlbec@evilplan.org>,
Eric Van Hensbergen <ericvh@gmail.com>,
Ron Minnich <rminnich@sandia.gov>,
Latchesar Ionkov <lucho@ionkov.net>,
Dave Chinner <david@fromorbit.com>
Subject: Re: [RFC PATCH 1/5] new helper: iov_iter_rw()
Date: Mon, 16 Mar 2015 17:36:05 +0000 [thread overview]
Message-ID: <20150316173605.GX29656@ZenIV.linux.org.uk> (raw)
In-Reply-To: <34dc78b262546e9343e0ed872232a97f5eaa5f15.1426502566.git.osandov@osandov.com>
On Mon, Mar 16, 2015 at 04:33:49AM -0700, Omar Sandoval wrote:
> Get either READ or WRITE out of iter->type.
Umm...
> + * Get one of READ or WRITE out of iter->type without any other flags OR'd in
> + * with it.
> + */
> +static inline int iov_iter_rw(const struct iov_iter *i)
> +{
> + return i->type & RW_MASK;
> +}
TBH, I would turn that into a macro. Reason: indirect includes.
How about
#define iov_iter_rw(i) ((0 ? (struct iov_iter *)0 : (i))->type & RW_MASK)
Should do you all the type safety of inline function and avoids the need
to include fs.h in uio.h; _users_ of iov_iter_rw() obviously still need
fs.h, but such places always used to...
next prev parent reply other threads:[~2015-03-16 17:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 11:33 [RFC PATCH 0/5] Remove rw parameter from direct_IO() Omar Sandoval
2015-03-16 11:33 ` [RFC PATCH 1/5] new helper: iov_iter_rw() Omar Sandoval
2015-03-16 17:36 ` Al Viro [this message]
2015-03-17 1:20 ` [RFC PATCH v2 " Omar Sandoval
2015-03-17 9:31 ` [RFC PATCH " David Sterba
2015-03-17 10:18 ` Omar Sandoval
2015-03-17 18:19 ` Al Viro
2015-03-17 21:04 ` [RFC PATCH v3 " Omar Sandoval
2015-03-18 13:42 ` David Sterba
2015-03-16 11:33 ` [RFC PATCH 2/5] Remove rw from {,__,do_}blockdev_direct_IO() Omar Sandoval
2015-03-16 11:33 ` [RFC PATCH 3/5] Remove rw from dax_{do_,}io() Omar Sandoval
2015-03-16 11:33 ` [RFC PATCH 4/5] direct_IO: use iov_iter_rw() instead of rw everywhere Omar Sandoval
2015-03-16 11:33 ` [RFC PATCH 5/5] direct_IO: remove rw from a_ops->direct_IO() Omar Sandoval
2015-03-16 18:15 ` [RFC PATCH 0/5] Remove rw parameter from direct_IO() Al Viro
2015-04-05 16:27 ` Al Viro
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