From: Andrew Morton <akpm@digeo.com>
To: Hugh Dickins <hugh@veritas.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] page cache readahead implemented?
Date: Sun, 22 Jun 2003 11:41:59 -0700 [thread overview]
Message-ID: <20030622114159.1ebbc236.akpm@digeo.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0306221922110.5241-100000@localhost.localdomain>
Hugh Dickins <hugh@veritas.com> wrote:
>
> do_mmap_pgoff's PROT_EXEC do_page_cache_readahead assumes that is
> implemented for all mappings, but not all filesystems provide ->readpage.
Which filesystems?
For tmpfs and other memory-backed filesystems we could perhaps just
rely on backing_dev_info.ra_pages being zero. For others, maybe
we should just say "thou shalt implement readpage".
next prev parent reply other threads:[~2003-06-22 18:27 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-22 18:27 Hugh Dickins
2003-06-22 18:41 ` Andrew Morton [this message]
2003-06-22 22:29 ` Hugh Dickins
2003-06-22 23:04 ` Andrew Morton
2003-06-23 5:38 ` Hugh Dickins
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