From: Andrew Morton <akpm@osdl.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Nick Piggin <npiggin@suse.de>,
Linux Memory Management <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@osdl.org>
Subject: Re: [patch 2/5] mm: fault vs invalidate/truncate race fix
Date: Tue, 10 Oct 2006 23:00:42 -0700 [thread overview]
Message-ID: <20061010230042.3d4e4df1.akpm@osdl.org> (raw)
In-Reply-To: <452C838A.70806@yahoo.com.au>
On Wed, 11 Oct 2006 15:39:22 +1000
Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> But I see that it does read twice. Do you want that behaviour retained? It
> seems like at this level it would be logical to read it once and let lower
> layers take care of any retries?
argh. Linus has good-sounding reasons for retrying the pagefault-path's
read a single time, but I forget what they are. Something to do with
networked filesystems? (adds cc)
WARNING: multiple messages have this Message-ID (diff)
From: Andrew Morton <akpm@osdl.org>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Nick Piggin <npiggin@suse.de>,
Linux Memory Management <linux-mm@kvack.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@osdl.org>
Subject: Re: [patch 2/5] mm: fault vs invalidate/truncate race fix
Date: Tue, 10 Oct 2006 23:00:42 -0700 [thread overview]
Message-ID: <20061010230042.3d4e4df1.akpm@osdl.org> (raw)
In-Reply-To: <452C838A.70806@yahoo.com.au>
On Wed, 11 Oct 2006 15:39:22 +1000
Nick Piggin <nickpiggin@yahoo.com.au> wrote:
> But I see that it does read twice. Do you want that behaviour retained? It
> seems like at this level it would be logical to read it once and let lower
> layers take care of any retries?
argh. Linus has good-sounding reasons for retrying the pagefault-path's
read a single time, but I forget what they are. Something to do with
networked filesystems? (adds cc)
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2006-10-11 6:00 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-10 14:21 [rfc] 2.6.19-rc1-git5: consolidation of file backed fault handlers Nick Piggin
2006-10-10 14:21 ` Nick Piggin
2006-10-10 14:21 ` [patch 1/5] mm: fault vs invalidate/truncate check Nick Piggin
2006-10-10 14:21 ` Nick Piggin
2006-10-10 14:21 ` [patch 2/5] mm: fault vs invalidate/truncate race fix Nick Piggin
2006-10-10 14:21 ` Nick Piggin
2006-10-11 4:38 ` Andrew Morton
2006-10-11 4:38 ` Andrew Morton
2006-10-11 5:39 ` Nick Piggin
2006-10-11 5:39 ` Nick Piggin
2006-10-11 6:00 ` Andrew Morton [this message]
2006-10-11 6:00 ` Andrew Morton
2006-10-11 9:21 ` Nick Piggin
2006-10-11 9:21 ` Nick Piggin
2006-10-11 16:21 ` Linus Torvalds
2006-10-11 16:21 ` Linus Torvalds
2006-10-11 16:57 ` SPAM: " Nick Piggin
2006-10-11 16:57 ` Nick Piggin
2006-10-11 17:11 ` Linus Torvalds
2006-10-11 17:11 ` Linus Torvalds
2006-10-11 17:21 ` SPAM: " Nick Piggin
2006-10-11 17:21 ` Nick Piggin
2006-10-11 17:38 ` Linus Torvalds
2006-10-11 17:38 ` Linus Torvalds
2006-10-12 3:33 ` Nick Piggin
2006-10-12 3:33 ` Nick Piggin
2006-10-12 15:37 ` Linus Torvalds
2006-10-12 15:37 ` Linus Torvalds
2006-10-12 15:40 ` Nick Piggin
2006-10-12 15:40 ` Nick Piggin
2006-10-11 5:13 ` Andrew Morton
2006-10-11 5:13 ` Andrew Morton
2006-10-11 5:50 ` Nick Piggin
2006-10-11 5:50 ` Nick Piggin
2006-10-11 6:10 ` Andrew Morton
2006-10-11 6:10 ` Andrew Morton
2006-10-11 6:17 ` [patch 1/6] revert "generic_file_buffered_write(): handle zero length iovec segments" Andrew Morton
2006-10-11 6:17 ` Andrew Morton, Andrew Morton
[not found] ` <20061010231150.fb9e30f5.akpm@osdl.org>
2006-10-11 6:17 ` [patch 2/6] revert "generic_file_buffered_write(): deadlock on vectored write" Andrew Morton
2006-10-11 6:17 ` Andrew Morton, Andrew Morton
[not found] ` <20061010231243.bc8b834c.akpm@osdl.org>
2006-10-11 6:17 ` [patch 3/6] generic_file_buffered_write() cleanup Andrew Morton
2006-10-11 6:17 ` Andrew Morton, Andrew Morton
[not found] ` <20061010231339.a79c1fae.akpm@osdl.org>
2006-10-11 6:18 ` [patch 4/6] generic_file_buffered_write(): fix page prefaulting Andrew Morton
2006-10-11 6:18 ` Andrew Morton, Andrew Morton
[not found] ` <20061010231424.db88931f.akpm@osdl.org>
2006-10-11 6:18 ` [patch 5/6] generic_file_buffered_write(): max_len cleanup Andrew Morton
2006-10-11 6:18 ` Andrew Morton, Andrew Morton
[not found] ` <20061010231514.c1da7355.akpm@osdl.org>
2006-10-11 6:18 ` [patch 6/6] fix pagecache write deadlocks Andrew Morton
2006-10-11 6:18 ` Andrew Morton, Andrew Morton
2006-10-21 1:53 ` [patch 2/5] mm: fault vs invalidate/truncate race fix Benjamin Herrenschmidt
2006-10-21 1:53 ` Benjamin Herrenschmidt
2006-10-10 14:22 ` [patch 3/5] mm: fault handler to replace nopage and populate Nick Piggin
2006-10-10 14:22 ` Nick Piggin
2006-10-10 14:22 ` [patch 4/5] mm: add vm_insert_pfn helpler Nick Piggin
2006-10-10 14:22 ` Nick Piggin
2006-10-11 10:12 ` Thomas Hellstrom
2006-10-11 11:24 ` Nick Piggin
2006-10-11 21:30 ` Thomas Hellström
2006-10-10 14:22 ` [patch 5/5] mm: merge nopfn with fault handler Nick Piggin
2006-10-10 14:22 ` Nick Piggin
2006-10-10 14:26 ` [rfc] 2.6.19-rc1-git5: consolidation of file backed fault handlers Nick Piggin
2006-10-10 14:26 ` Nick Piggin
2006-10-10 14:33 ` Christoph Hellwig
2006-10-10 14:33 ` Christoph Hellwig
2006-10-10 15:01 ` Nick Piggin
2006-10-10 15:01 ` Nick Piggin
2006-10-10 16:09 ` Arjan van de Ven
2006-10-10 16:09 ` Arjan van de Ven
2006-10-11 0:46 ` SPAM: " Nick Piggin
2006-10-11 0:46 ` Nick Piggin
2006-10-10 15:07 ` Arjan van de Ven
2006-10-10 15:07 ` Arjan van de Ven
-- strict thread matches above, loose matches on Subject: below --
2006-10-09 16:12 Nick Piggin
2006-10-09 16:12 ` [patch 2/5] mm: fault vs invalidate/truncate race fix Nick Piggin
2006-10-09 16:12 ` Nick Piggin
2006-10-09 21:10 ` Mark Fasheh
2006-10-09 21:10 ` Mark Fasheh
2006-10-10 1:10 ` Nick Piggin
2006-10-10 1:10 ` Nick Piggin
2006-10-11 18:34 ` Mark Fasheh
2006-10-11 18:34 ` Mark Fasheh
2006-10-12 3:28 ` Nick Piggin
2006-10-12 3:28 ` Nick Piggin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20061010230042.3d4e4df1.akpm@osdl.org \
--to=akpm@osdl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=nickpiggin@yahoo.com.au \
--cc=npiggin@suse.de \
--cc=torvalds@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.