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From: David Howells <dhowells@redhat.com>
To: Jeff Layton <jlayton@redhat.com>
Cc: dhowells@redhat.com, linux-fsdevel@vger.kernel.org,
	"Matthew Wilcox (Oracle)" <willy@infradead.org>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	Steve French <sfrench@samba.org>,
	Dominique Martinet <asmadeus@codewreck.org>,
	Mike Marshall <hubcap@omnibond.com>,
	David Wysochanski <dwysocha@redhat.com>,
	Shyam Prasad N <nspmangalore@gmail.com>,
	Miklos Szeredi <miklos@szeredi.hu>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-cachefs@redhat.com, linux-afs@lists.infradead.org,
	linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org,
	ceph-devel@vger.kernel.org, v9fs-developer@lists.sourceforge.net,
	devel@lists.orangefs.org, linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 01/12] afs: Sort out symlink reading
Date: Mon, 26 Jul 2021 10:44:35 +0100	[thread overview]
Message-ID: <812200.1627292675@warthog.procyon.org.uk> (raw)
In-Reply-To: <35ecb577315f486f1636b2316c2051ad004f6f7b.camel@redhat.com>

Jeff Layton <jlayton@redhat.com> wrote:

> > -static int afs_symlink_readpage(struct page *page)
> > +static int afs_symlink_readpage(struct file *file, struct page *page)
> >  {
> >  	struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
> >  	struct afs_read *fsreq;
> 
> 
> I wonder...would you be better served here by not using page_readlink
> for symlinks and instead use simple_get_link and roll your own readlink
> operation. It seems a bit more direct, and AFS seems to be the only
> caller of page_readlink.

Maybe.  At some point it will need to go through netfs_readpage() so that it
will get cached and maybe encrypted.  Possibly there should be a
netfs_readlink().  AFS directories too will at some point need to go through
netfs_readahead() or similar.

David


  parent reply	other threads:[~2021-07-26  9:44 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-21 13:44 David Howells
2021-07-21 13:44 ` [RFC PATCH 01/12] afs: Sort out symlink reading David Howells
2021-07-21 16:20   ` Jeff Layton
2021-07-26  9:44   ` David Howells [this message]
2021-07-21 13:44 ` [RFC PATCH 02/12] netfs: Add an iov_iter to the read subreq for the network fs/cache to use David Howells
2021-07-21 17:16   ` Jeff Layton
2021-07-21 17:20   ` David Howells
2021-07-21 13:45 ` [RFC PATCH 03/12] netfs: Remove netfs_read_subrequest::transferred David Howells
2021-07-21 17:43   ` Jeff Layton
2021-07-21 18:54   ` David Howells
2021-07-21 19:00     ` Jeff Layton
2021-07-21 13:45 ` [RFC PATCH 04/12] netfs: Use a buffer in netfs_read_request and add pages to it David Howells
2021-07-21 13:45 ` [RFC PATCH 05/12] netfs: Add a netfs inode context David Howells
2021-07-21 13:46 ` [RFC PATCH 06/12] netfs: Keep lists of pending, active, dirty and flushed regions David Howells
2021-07-21 13:46 ` [RFC PATCH 07/12] netfs: Initiate write request from a dirty region David Howells
2021-07-21 13:46 ` [RFC PATCH 08/12] netfs: Keep dirty mark for pages with more than one " David Howells
2021-07-21 13:46 ` [RFC PATCH 09/12] netfs: Send write request to multiple destinations David Howells
2021-07-21 13:46 ` [RFC PATCH 10/12] netfs: Do encryption in write preparatory phase David Howells
2021-07-21 13:47 ` [RFC PATCH 11/12] netfs: Put a list of regions in /proc/fs/netfs/regions David Howells
2021-07-21 13:47 ` [RFC PATCH 12/12] netfs: Export some read-request ref functions David Howells
2021-07-21 14:00 ` [RFC PATCH 00/12] netfs: Experimental write helpers, fscrypt and compression David Howells
2021-07-21 18:42 ` [RFC PATCH 13/12] netfs: Do copy-to-cache-on-read through VM writeback David Howells

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