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SubjectRe: [PATCH] writeback: avoid possible balance_dirty_pages() lockup on a light-load bdi
On 10/02/2007 09:27 AM, Fengguang Wu wrote:
> On Tue, Oct 02, 2007 at 08:13:27PM +0800, Fengguang Wu wrote:
> [...]
>> One more serious problem is, a busy writer could also drain all the
>> dirty pages and make (nr_writeback == dirty_limit+1MB). In that case,
>> I suspect the light-load sdb writer still have good chance to
>> make progress(need confirmation).
> Well it seems to be a really tricky issue without knowing the per-bdi
> numbers. Maybe we could just encourage users to upgrade to 2.6.24...

Yeah, and if that doesn't work there's always 2.6.25... :/

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