From: Christoph Hellwig <hch@lst.de>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com, viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 5/6] xfs: move non-inline symlinks to the pagecache
Date: Sat, 25 Apr 2015 16:16:12 +0200 [thread overview]
Message-ID: <20150425141612.GA4153@lst.de> (raw)
In-Reply-To: <20150423222942.GK15810@dastard>
Al, what do you think about adding a new
i_link member to the union of i_pipe, i_bdev and i_cdev. That we
we can cache a link acquired by any way for direct use in the VFS.
This has a few use cases: inline links can be set up directly
when reading the inode, and we never need to call into ->follow_link.
Formats like the XFS v5 symlinks can be read in once by whatever
way we want, and following accesses can be done RCU safe and
without calling into the filesystem.
Note that caching the symlink in a kmalloc'ed buffer might be
more efficient than the pagecache for most cases anyway.
next parent reply other threads:[~2015-04-25 14:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1429816064-10033-1-git-send-email-hch@lst.de>
[not found] ` <1429816064-10033-6-git-send-email-hch@lst.de>
[not found] ` <20150423222942.GK15810@dastard>
2015-04-25 14:16 ` Christoph Hellwig [this message]
2015-04-25 14:57 ` [PATCH 5/6] xfs: move non-inline symlinks to the pagecache Al Viro
2015-04-25 15:11 ` Al Viro
2015-04-25 18:32 ` Christoph Hellwig
2015-04-25 21:05 ` Al Viro
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