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From: Christoph Hellwig <hch@infradead.org>
To: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>,
	David Howells <dhowells@redhat.com>,
	Matthew Wilcox <willy@infradead.org>,
	Jens Axboe <axboe@kernel.dk>, Jan Kara <jack@suse.cz>,
	Jeff Layton <jlayton@kernel.org>,
	Logan Gunthorpe <logang@deltatee.com>,
	linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 06/34] iov_iter: Use the direction in the iterator functions
Date: Wed, 18 Jan 2023 21:45:14 -0800	[thread overview]
Message-ID: <Y8jY6pCN73rwfcXq@infradead.org> (raw)
In-Reply-To: <Y8hyjEw94LIZ84xo@ZenIV>

On Wed, Jan 18, 2023 at 10:28:28PM +0000, Al Viro wrote:
> On Mon, Jan 16, 2023 at 11:58:16PM -0800, Christoph Hellwig wrote:
> > On Mon, Jan 16, 2023 at 11:08:44PM +0000, David Howells wrote:
> > > Use the direction in the iterator functions rather than READ/WRITE.
> > 
> > I don't think we need the direction at all as nothing uses it any more.
> 
> ... except for checks in copy_from_iter() et.al.

Debug checks, yes.

  reply	other threads:[~2023-01-19  5:45 UTC|newest]

Thread overview: 91+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-16 23:07 [PATCH v6 00/34] iov_iter: Improve page extraction (ref, pin or just list) David Howells
2023-01-16 23:08 ` [PATCH v6 01/34] vfs: Unconditionally set IOCB_WRITE in call_write_iter() David Howells
2023-01-17  7:52   ` Christoph Hellwig
2023-01-18 22:11     ` Al Viro
2023-01-19  5:44       ` Christoph Hellwig
2023-01-19 11:34       ` David Howells
2023-01-19 16:48         ` Christoph Hellwig
2023-01-19 21:14         ` David Howells
2023-01-17  8:28   ` David Howells
2023-01-17  8:44     ` Christoph Hellwig
2023-01-17 11:11   ` David Howells
2023-01-17 11:11     ` Christoph Hellwig
2023-01-18 22:05   ` Al Viro
2023-01-19  5:41     ` Christoph Hellwig
2023-01-19 10:01   ` David Howells
2023-01-19 16:46     ` Christoph Hellwig
2023-01-19 11:06   ` David Howells
2023-01-16 23:08 ` [PATCH v6 02/34] iov_iter: Use IOCB/IOMAP_WRITE/op_is_write rather than iterator direction David Howells
2023-01-17  7:55   ` Christoph Hellwig
2023-01-18 22:18     ` Al Viro
2023-01-16 23:08 ` [PATCH v6 03/34] iov_iter: Pass I/O direction into iov_iter_get_pages*() David Howells
2023-01-17  7:57   ` Christoph Hellwig
2023-01-17  8:07     ` David Hildenbrand
2023-01-17  8:09       ` Christoph Hellwig
2023-01-18 23:03     ` Al Viro
2023-01-19  0:15       ` Al Viro
2023-01-19  2:11         ` Al Viro
2023-01-19  5:47           ` Christoph Hellwig
2023-01-19  5:47         ` Christoph Hellwig
2023-01-17  8:44   ` David Howells
2023-01-17  8:46     ` Christoph Hellwig
2023-01-17  8:47     ` David Hildenbrand
2023-01-16 23:08 ` [PATCH v6 04/34] iov_iter: Remove iov_iter_get_pages2/pages_alloc2() David Howells
2023-01-16 23:08 ` [PATCH v6 05/34] iov_iter: Change the direction macros into an enum David Howells
2023-01-18 23:14   ` Al Viro
2023-01-18 23:17   ` David Howells
2023-01-18 23:19     ` Al Viro
2023-01-18 23:24     ` David Howells
2023-01-16 23:08 ` [PATCH v6 06/34] iov_iter: Use the direction in the iterator functions David Howells
2023-01-17  7:58   ` Christoph Hellwig
2023-01-18 22:28     ` Al Viro
2023-01-19  5:45       ` Christoph Hellwig [this message]
2023-01-18 23:15   ` Al Viro
2023-01-16 23:08 ` [PATCH v6 07/34] iov_iter: Add a function to extract a page list from an iterator David Howells
2023-01-17  8:01   ` Christoph Hellwig
2023-01-17  8:19   ` David Howells
2023-01-16 23:08 ` [PATCH v6 08/34] mm: Provide a helper to drop a pin/ref on a page David Howells
2023-01-17  8:02   ` Christoph Hellwig
2023-01-17  8:21   ` David Howells
2023-01-16 23:09 ` [PATCH v6 09/34] bio: Rename BIO_NO_PAGE_REF to BIO_PAGE_REFFED and invert the meaning David Howells
2023-01-17  8:02   ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 10/34] mm, block: Make BIO_PAGE_REFFED/PINNED the same as FOLL_GET/PIN numerically David Howells
2023-01-17  8:03   ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 11/34] iov_iter, block: Make bio structs pin pages rather than ref'ing if appropriate David Howells
2023-01-17  8:07   ` Christoph Hellwig
2023-01-17  8:26   ` David Howells
2023-01-17  8:44     ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 12/34] bio: Fix bio_flagged() so that gcc can better optimise it David Howells
2023-01-17  8:07   ` Christoph Hellwig
2023-01-16 23:09 ` [PATCH v6 13/34] netfs: Add a function to extract a UBUF or IOVEC into a BVEC iterator David Howells
2023-01-16 23:09 ` [PATCH v6 14/34] netfs: Add a function to extract an iterator into a scatterlist David Howells
2023-01-16 23:09 ` [PATCH v6 15/34] af_alg: Pin pages rather than ref'ing if appropriate David Howells
2023-01-16 23:09 ` [PATCH v6 16/34] af_alg: [RFC] Use netfs_extract_iter_to_sg() to create scatterlists David Howells
2023-01-16 23:10 ` [PATCH v6 17/34] scsi: [RFC] Use netfs_extract_iter_to_sg() David Howells
2023-01-16 23:10 ` [PATCH v6 18/34] dio: Pin pages rather than ref'ing if appropriate David Howells
2023-01-19  5:04   ` Al Viro
2023-01-19  5:51     ` Christoph Hellwig
2023-01-16 23:10 ` [PATCH v6 19/34] fuse: " David Howells
2023-01-16 23:10 ` [PATCH v6 20/34] vfs: Make splice use iov_iter_extract_pages() David Howells
2023-01-19  2:31   ` Al Viro
2023-01-16 23:10 ` [PATCH v6 21/34] 9p: Pin pages rather than ref'ing if appropriate David Howells
2023-01-19  2:52   ` Al Viro
2023-01-19 16:44   ` David Howells
2023-01-19 16:51     ` Christoph Hellwig
2023-01-16 23:10 ` [PATCH v6 22/34] nfs: " David Howells
2023-01-16 23:10 ` [PATCH v6 23/34] cifs: Implement splice_read to pass down ITER_BVEC not ITER_PIPE David Howells
2023-01-16 23:10 ` [PATCH v6 24/34] cifs: Add a function to build an RDMA SGE list from an iterator David Howells
2023-01-16 23:11 ` [PATCH v6 25/34] cifs: Add a function to Hash the contents of " David Howells
2023-01-16 23:11 ` [PATCH v6 26/34] cifs: Add some helper functions David Howells
2023-01-16 23:11 ` [PATCH v6 27/34] cifs: Add a function to read into an iter from a socket David Howells
2023-01-16 23:11 ` [PATCH v6 28/34] cifs: Change the I/O paths to use an iterator rather than a page list David Howells
2023-01-16 23:11 ` [PATCH v6 29/34] cifs: Build the RDMA SGE list directly from an iterator David Howells
2023-01-16 23:11 ` [PATCH v6 30/34] cifs: Remove unused code David Howells
2023-01-16 23:11 ` [PATCH v6 31/34] cifs: Fix problem with encrypted RDMA data read David Howells
2023-01-19 16:25   ` Stefan Metzmacher
2023-01-16 23:11 ` [PATCH v6 32/34] cifs: DIO to/from KVEC-type iterators should now work David Howells
2023-01-16 23:12 ` [PATCH v6 33/34] net: [RFC][WIP] Mark each skb_frags as to how they should be cleaned up David Howells
2023-01-16 23:12 ` [PATCH v6 34/34] net: [RFC][WIP] Make __zerocopy_sg_from_iter() correctly pin or leave pages unref'd David Howells
2023-01-17  7:46 ` [PATCH v6 00/34] iov_iter: Improve page extraction (ref, pin or just list) Christoph Hellwig
2023-01-18 14:00 ` [PATCH v6 09/34] bio: Rename BIO_NO_PAGE_REF to BIO_PAGE_REFFED and invert the meaning David Howells
2023-01-18 14:09   ` Christoph Hellwig

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