Re: [RFC 5/5] truncate: Remove unnecessary page release

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From: KOSAKI Motohiro
Date: Sunday, December 19, 2010 - 7:21 pm

> This patch series changes remove_from_page_cache's page ref counting

Do we _always_ have stable page reference here? IOW, I can assume 
cleancache_flush_page() doesn't cause NULL deref?



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Messages in current thread:
[RFC 1/5] drop page reference on remove_from_page_cache, Minchan Kim, (Fri Dec 17, 10:13 am)
[RFC 2/5] fuse: Remove unnecessary page release, Minchan Kim, (Fri Dec 17, 10:13 am)
[RFC 3/5] tlbfs: Remove unnecessary page release, Minchan Kim, (Fri Dec 17, 10:13 am)
[RFC 4/5] swap: Remove unnecessary page release, Minchan Kim, (Fri Dec 17, 10:13 am)
[RFC 5/5] truncate: Remove unnecessary page release, Minchan Kim, (Fri Dec 17, 10:13 am)
Re: [RFC 1/5] drop page reference on remove_from_page_cache, KAMEZAWA Hiroyuki, (Sun Dec 19, 6:53 pm)
Re: [RFC 2/5] fuse: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Sun Dec 19, 6:54 pm)
Re: [RFC 3/5] tlbfs: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Sun Dec 19, 6:54 pm)
Re: [RFC 4/5] swap: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Sun Dec 19, 6:55 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Sun Dec 19, 6:55 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KOSAKI Motohiro, (Sun Dec 19, 7:21 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Sun Dec 19, 7:27 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KOSAKI Motohiro, (Sun Dec 19, 7:32 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KOSAKI Motohiro, (Sun Dec 19, 8:03 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Sun Dec 19, 9:35 pm)
Re: [RFC 5/5] truncate: Remove unnecessary page release, KAMEZAWA Hiroyuki, (Mon Dec 20, 1:54 am)
Re: [RFC 0/5] Change page reference hanlding semantic of p ..., Christoph Hellwig, (Mon Dec 20, 3:33 am)