From: David Howells <dhowells@redhat.com>
To: Andrew Morton <akpm@osdl.org>
Cc: aviro@redhat.com, nfsv4@linux-nfs.org,
linux-kernel@vger.kernel.org, torvalds@osdl.org,
linux-cachefs@redhat.com, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 5/7] FS-Cache: Generic filesystem caching facility
Date: Fri, 21 Apr 2006 20:33:49 +0100 [thread overview]
Message-ID: <17634.1145648029@warthog.cambridge.redhat.com> (raw)
In-Reply-To: <20060421113805.2ec6fd74.akpm@osdl.org>
Andrew Morton <akpm@osdl.org> wrote:
> > Modules that might depend on fscache need to know that it's there,
>
> In theory, module A isn't supposed to care whether module B was configured,
> because module B might be compiled separately, or dowloaded from elsewhere
> or whatever.
In this case it's sort of necessary - unless you're suggesting I make FS-Cache
mandatory...
The problem is that I don't want NFS or whatever to be carrying around the
cookie pointers if FS-Cache isn't compiled as that saves memory. But that
involves conditionally changing the composition of structures, something
that's most clearly done with cpp-conditionals.
David
next prev parent reply other threads:[~2006-04-21 19:33 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-20 16:59 [PATCH 1/7] FS-Cache: Provide a filesystem-specific sync'able page bit David Howells
2006-04-20 16:59 ` [PATCH 2/7] FS-Cache: Add notification of page becoming writable to VMA ops David Howells
2006-04-20 17:40 ` Zach Brown
2006-04-20 18:27 ` Anton Altaparmakov
2006-04-20 16:59 ` [PATCH 3/7] FS-Cache: Avoid ENFILE checking for kernel-specific open files David Howells
2006-04-20 17:18 ` Christoph Hellwig
2006-04-20 18:06 ` David Howells
2006-04-21 0:11 ` Andrew Morton
2006-04-21 10:57 ` David Howells
2006-04-21 0:07 ` Andrew Morton
2006-04-21 12:33 ` David Howells
2006-04-21 18:22 ` Andrew Morton
2006-04-21 19:29 ` David Howells
2006-04-20 16:59 ` [PATCH 4/7] FS-Cache: Export find_get_pages() David Howells
2006-04-20 17:19 ` Christoph Hellwig
2006-04-20 17:45 ` David Howells
2006-04-21 0:15 ` Andrew Morton
2006-04-21 13:02 ` David Howells
2006-04-20 16:59 ` [PATCH 5/7] FS-Cache: Generic filesystem caching facility David Howells
2006-04-21 0:46 ` Andrew Morton
2006-04-21 14:15 ` David Howells
2006-04-21 18:38 ` Andrew Morton
2006-04-21 19:33 ` David Howells [this message]
2006-04-20 16:59 ` [PATCH 6/7] FS-Cache: Make kAFS use FS-Cache David Howells
2006-04-20 16:59 ` [PATCH 7/7] FS-Cache: CacheFiles: A cache that backs onto a mounted filesystem David Howells
2006-04-21 0:57 ` Andrew Morton
2006-04-21 1:16 ` Andrew Morton
2006-04-21 14:49 ` David Howells
2006-04-21 0:12 ` [PATCH 1/7] FS-Cache: Provide a filesystem-specific sync'able page bit Andrew Morton
2006-04-21 10:22 ` David Howells
2006-04-21 10:33 ` Andrew Morton
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