Messages in this thread | | | Subject | Re: per-bdi-throttling: synchronous writepage doesn't work correctly | From | Miklos Szeredi <> | Date | Thu, 01 Nov 2007 20:19:45 +0100 |
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> > > > See the file "Locking" for more details. > > > > > > The "should set PG_Writeback" bit threw me off I guess. > > Hmm, set_page_writeback() is also the one clearing the radix tree dirty > tag. So if that is not called, we get in a bit of a mess, no? > > Which makes me think hostfs is buggy.
Yes, looks like that sort of usage is not valid. But not clearing the dirty tag won't cause any malfunction, it'll just waste some CPU when looking for dirty pages to write back. This is probably why this wasn't noticed earlier.
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