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    SubjectRe: [PATCH 5/9] writeback: introduce the pageout work
    On Thu, 1 Mar 2012 12:04:04 +0100
    Jan Kara <jack@suse.cz> wrote:

    > > iirc, the way I "grabbed" the page was to actually lock it, with
    > > [try_]_lock_page(). And unlock it again way over within the writeback
    > > thread. I forget why I did it this way, rather than get_page() or
    > > whatever. Locking the page is a good way of preventing anyone else
    > > from futzing with it. It also pins the inode, which perhaps meant that
    > > with careful management, I could avoid the igrab()/iput() horrors
    > > discussed above.
    >
    > I think using get_page() might be a good way to go.

    get_page() doesn't pin the inode - truncate() will still detach it
    from the address_space().


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