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SubjectRe: VMA_MERGING_FIXUP and patch
Hugh Dickins <hugh@veritas.com> wrote:
>
> Hmm, I wonder, is that safe to be calling set_page_dirty
> from inside the page rmap lock? Andrew?

set_page_dirty() takes ->tree_lock and inode_lock. tree_lock surely is OK
and while I cannot think of any deadlocks which could occur with taking
inode_lock inside the rmap lock, it doesn't sound very nice.

It would of course be best if we could avoid adding a new ranking
relationship between these locks.
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