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    SubjectRe: [PATCH 09/28] FS-Cache: Release page->private after failed readahead [try #2]
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    On Tuesday 18 December 2007 09:42, David Howells wrote:
    > Nick Piggin <nickpiggin@yahoo.com.au> wrote:
    > > This is pretty nasty.
    >
    > Why? If the fs doesn't set PG_private or PG_fscache on any pages before
    > calling read_cache_pages(), there's no difference.

    It is conceptually wrong.


    > Furthermore, the differences only crop up in the error handling paths.

    That doesn't make it any better.


    > > I would suggest either to have the function return the number of pages
    > > that were added to pagecache,
    >
    > Which helps how?

    So the caller can do their own error handling / cleanup.


    > > or just open code it.
    >
    > Well, I could give an alternative read_cache_pages(), I suppose, for just
    > this situation, but that means there are two parallel functions which then
    > both need to be maintained.

    I would be OK with that.


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