From: Ted Ts'o <tytso-3s7WtUTddSA@public.gmane.org>
To: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: G@thunk.org, Indan Zupancic <indan-1J6HnF7K7zE@public.gmane.org>,
Greg KH <greg-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>,
Jonathan Nieder
<jrnieder-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Sage Weil <sage-BnTBU8nroG7k1uMJSBkQmQ@public.gmane.org>,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
"Aneesh Kumar K. V"
<aneesh.kumar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org,
hch-jcswGhMUV9g@public.gmane.org, l@jasper.es
Subject: Re: [PATCH v3] introduce sys_syncfs to sync a single file system
Date: Mon, 14 Mar 2011 19:17:53 -0400 [thread overview]
Message-ID: <20110314231753.GF8120@thunk.org> (raw)
In-Reply-To: <20110314142032.b9523309.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
On Mon, Mar 14, 2011 at 02:20:32PM -0700, Andrew Morton wrote:
> > I'm a bit nervous about exposing WB_SYNC_NONE to userspace, because
> > its semantics are *definitely* hard to describe. For example, at the
> > moment if you do a WB_SYNC_NONE writeback, the writeback code will
> > clamp the amount of data written back for each inode to
> > MAX_WRITEBACK_PAGES (1024) pages.
>
> Wha? It does? When did that get broken?
Oops, sorry, I misread the code in wb_writeback(). My bad! I
misinterpreted what write_chunk does in that function.
MAX_WRITEBACK_PAGES now really is the minimum amount of pages that
wb_writeback() will request the file system to write back. I'm not
sure why we bother with write_chunk any more, but it shouldn't be
doing any harm any more.
- Ted
next prev parent reply other threads:[~2011-03-14 23:17 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.64.1102171035220.13904@cobra.newdream.net>
[not found] ` <Pine.LNX.4.64.1102171035220.13904-vIokxiIdD2AQNTJnQDzGJqxOck334EZe@public.gmane.org>
2011-03-03 7:22 ` [RFC] introduce sys_syncat to sync a single file system Jonathan Nieder
2011-03-03 8:54 ` Aneesh Kumar K. V
[not found] ` <87bp1sziqn.fsf-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2011-03-07 23:17 ` [RFC] introduce sys_syncfs to sync a single file system (v2) Sage Weil
[not found] ` <Pine.LNX.4.64.1103071515070.11152-vIokxiIdD2AQNTJnQDzGJqxOck334EZe@public.gmane.org>
2011-03-08 5:27 ` Aneesh Kumar K. V
[not found] ` <8762ruchcr.fsf-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2011-03-10 14:56 ` Arnd Bergmann
[not found] ` <201103101556.44698.arnd-r2nGTMty4D4@public.gmane.org>
2011-03-10 19:28 ` Sage Weil
2011-03-10 19:31 ` [PATCH v3] introduce sys_syncfs to sync a single file system Sage Weil
2011-03-10 22:08 ` Arnd Bergmann
[not found] ` <Pine.LNX.4.64.1103101125150.4190-vIokxiIdD2AQNTJnQDzGJqxOck334EZe@public.gmane.org>
2011-03-11 4:44 ` Aneesh Kumar K. V
2011-03-11 11:01 ` Indan Zupancic
[not found] ` <edfa4cf081249734807e582c14253fca.squirrel-2RFepEojUI3wYrDfM2ltn5vKXLoBo5SK@public.gmane.org>
2011-03-11 11:55 ` Arnd Bergmann
[not found] ` <201103111255.44979.arnd-r2nGTMty4D4@public.gmane.org>
2011-03-11 23:45 ` Indan Zupancic
2011-03-11 23:56 ` Jonathan Nieder
2011-03-12 1:53 ` Indan Zupancic
[not found] ` <9446ab1a2315c0d2476c30f8315a0503.squirrel-2RFepEojUI3wYrDfM2ltn5vKXLoBo5SK@public.gmane.org>
2011-03-12 2:10 ` Jonathan Nieder
2011-03-12 4:22 ` Indan Zupancic
2011-03-12 17:32 ` Greg KH
[not found] ` <20110312173217.GA24981-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2011-03-14 1:56 ` Indan Zupancic
[not found] ` <1e597aedd3d7825dcc0630b1cf2399fa.squirrel-2RFepEojUI3wYrDfM2ltn5vKXLoBo5SK@public.gmane.org>
2011-03-14 4:29 ` Sage Weil
2011-03-14 9:27 ` Indan Zupancic
2011-03-14 10:22 ` Theodore Tso
[not found] ` <Pine.LNX.4.64.1103132114380.5145-vIokxiIdD2AQNTJnQDzGJqxOck334EZe@public.gmane.org>
2011-03-15 10:11 ` Dave Chinner
2011-03-15 13:00 ` Sage Weil
2011-03-15 15:56 ` Andreas Dilger
2011-03-15 16:08 ` Sage Weil
2011-03-15 20:18 ` Andrew Morton
2011-03-14 20:10 ` Andrew Morton
2011-03-14 20:29 ` Artem Bityutskiy
2011-03-14 21:11 ` Ted Ts'o
2011-03-14 21:20 ` Andrew Morton
[not found] ` <20110314142032.b9523309.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2011-03-14 23:17 ` Ted Ts'o [this message]
2011-03-14 21:22 ` Arnd Bergmann
2011-03-12 0:40 ` Ric Wheeler
[not found] ` <4D7AC0FE.8070806-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-03-12 1:33 ` Indan Zupancic
[not found] ` <1d4d1b7ae64da97f44cad0e2bda4f832.squirrel-2RFepEojUI3wYrDfM2ltn5vKXLoBo5SK@public.gmane.org>
2011-03-12 2:52 ` Ric Wheeler
[not found] ` <4D7ADFDD.9080108-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-03-12 3:50 ` Indan Zupancic
2011-03-12 12:41 ` Ric Wheeler
[not found] ` <e118a1458c29e4f44bf71c7095e4bce8.squirrel-2RFepEojUI3wYrDfM2ltn5vKXLoBo5SK@public.gmane.org>
2011-03-12 18:31 ` Jeff Garzik
2011-03-14 1:31 ` Indan Zupancic
2011-03-14 1:37 ` Theodore Tso
2011-03-14 1:47 ` Indan Zupancic
2011-03-14 1:45 ` Jeff Garzik
[not found] ` <4D7D7325.2040708-o2qLIJkoznsdnm+yROfE0A@public.gmane.org>
2011-03-14 1:59 ` Indan Zupancic
2011-03-12 19:28 ` Artem Bityutskiy
2011-03-12 19:22 ` Artem Bityutskiy
2011-03-14 1:38 ` Indan Zupancic
[not found] ` <3cc2c5c6fa6b3bd384017ae95a4241ab.squirrel-2RFepEojUI3wYrDfM2ltn5vKXLoBo5SK@public.gmane.org>
2011-03-14 5:52 ` Artem Bityutskiy
2011-03-13 20:59 ` Christoph Hellwig
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