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Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_complete_page2()
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From: Evgeniy Polyakov
Subject:
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_complete_page2()
Date: Wednesday, June 25, 2008 - 9:19 am
On Wed, Jun 25, 2008 at 06:02:43PM +0200, Miklos Szeredi (
miklos@szeredi.hu
) wrote:
quoted text
> > I do not know fuse good enough, but it looks like if your patch only > > fixes issue for pages which are in splice buffer during invalidation, > > any subsequent call for splice() will get correct new data (at least > > invoke readpage(s)), but in the description of error there was a > > long timeout between reading and writing, so it was a fresh splice() > > call, which suddenly started to return errors. > > > > Is it possible that by having uptodate bit in place, but page was > > actually freed but not removed from all trees and so on, so it > > masked read errors? This may be not the right conclusion though :) > > No, the mechanics of the problem are well understood. Only the > solution is problematic :)
Then why not fix filesystems to set error bit on all broken reads, if you sure it is the case? -- Evgeniy Polyakov --
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Messages in current thread:
[patch 1/2] mm: dont clear PG_uptodate in invalidate_compl ...
, Miklos Szeredi
, (Wed Jun 25, 5:40 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Evgeniy Polyakov
, (Wed Jun 25, 6:11 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 6:32 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Evgeniy Polyakov
, (Wed Jun 25, 7:16 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 7:41 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Linus Torvalds
, (Wed Jun 25, 8:11 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 8:29 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Evgeniy Polyakov
, (Wed Jun 25, 8:30 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Evgeniy Polyakov
, (Wed Jun 25, 8:47 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 8:59 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 9:02 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Evgeniy Polyakov
, (Wed Jun 25, 9:18 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Evgeniy Polyakov
, (Wed Jun 25, 9:19 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Linus Torvalds
, (Wed Jun 25, 9:30 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 9:42 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Jamie Lokier
, (Wed Jun 25, 10:38 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Wed Jun 25, 11:35 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Nick Piggin
, (Sun Jul 6, 11:38 pm)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Mon Jul 7, 2:21 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Mon Jul 7, 3:12 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Nick Piggin
, (Mon Jul 7, 3:43 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Nick Piggin
, (Mon Jul 7, 4:01 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Mon Jul 7, 5:03 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Nick Piggin
, (Mon Jul 7, 5:17 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Mon Jul 7, 5:52 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Nick Piggin
, (Mon Jul 7, 7:28 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Miklos Szeredi
, (Mon Jul 7, 8:08 am)
Re: [patch 1/2] mm: dont clear PG_uptodate in invalidate_c ...
, Nick Piggin
, (Mon Jul 7, 7:22 pm)
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