From: Fengguang Wu <wfg@mail.ustc.edu.cn>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 03/10] readahead: combine file_ra_state.prev_index/prev_offset into prev_pos
Date: Tue, 24 Jul 2007 11:48:01 +0800 [thread overview]
Message-ID: <385249561.11284@ustc.edu.cn> (raw)
Message-ID: <20070724034801.GA7310@mail.ustc.edu.cn> (raw)
In-Reply-To: <20070723205241.c50624ed.akpm@linux-foundation.org>
On Mon, Jul 23, 2007 at 08:52:41PM -0700, Andrew Morton wrote:
> On Tue, 24 Jul 2007 10:00:12 +0800 Fengguang Wu <wfg@mail.ustc.edu.cn> wrote:
>
> > - ra->prev_index = page->index;
> > + ra->prev_pos = page->index << PAGE_CACHE_SHIFT;
>
> bug! The rhs will get truncated befire it gets assigned to
> the lhs. Need to cast page->index to loff_t.
>
> I'll fix this one up. Please review the other patches for this?
Thank you. Be sure to update *all* the lines:
ra->prev_pos = page->index << PAGE_CACHE_SHIFT
Other places should have been taken care of.
next prev parent reply other threads:[~2007-07-24 4:00 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070724020009.677809022@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 00/10] readahead cleanups and interleaved readahead take 4 Fengguang Wu
[not found] ` <20070724020041.774421091@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 01/10] readahead: compacting file_ra_state Fengguang Wu
[not found] ` <20070724020042.028909529@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 02/10] readahead: mmap read-around simplification Fengguang Wu
[not found] ` <20070724020042.135275161@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 03/10] readahead: combine file_ra_state.prev_index/prev_offset into prev_pos Fengguang Wu
2007-07-24 3:52 ` Andrew Morton
[not found] ` <20070724034801.GA7310@mail.ustc.edu.cn>
2007-07-24 3:48 ` Fengguang Wu [this message]
2007-07-24 3:55 ` Andrew Morton
[not found] ` <20070724043215.GA6317@mail.ustc.edu.cn>
2007-07-24 4:32 ` Fengguang Wu
2007-07-24 4:53 ` Andrew Morton
[not found] ` <20070724062744.GA6686@mail.ustc.edu.cn>
2007-07-24 6:27 ` Fengguang Wu
[not found] ` <20070724043708.GA6627@mail.ustc.edu.cn>
2007-07-24 4:37 ` Fengguang Wu
[not found] ` <20070724020042.319225909@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 04/10] radixtree: introduce radix_tree_scan_hole() Fengguang Wu
[not found] ` <20070724020042.426486651@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 05/10] readahead: basic support of interleaved reads Fengguang Wu
[not found] ` <20070724020042.588573597@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 06/10] readahead: remove the local copy of ra in do_generic_mapping_read() Fengguang Wu
[not found] ` <20070724020042.758542876@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 07/10] readahead: remove several readahead macros Fengguang Wu
[not found] ` <20070724020042.882116065@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 08/10] readahead: remove the limit max_sectors_kb imposed on max_readahead_kb Fengguang Wu
[not found] ` <20070724020043.064974174@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 09/10] filemap: trivial code cleanups Fengguang Wu
[not found] ` <20070724020043.189132028@mail.ustc.edu.cn>
2007-07-24 2:00 ` [PATCH 10/10] filemap: convert some unsigned long to pgoff_t Fengguang Wu
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=385249561.11284@ustc.edu.cn \
--to=wfg@mail.ustc.edu.cn \
--cc=akpm@linux-foundation.org \
--cc=linux-kernel@vger.kernel.org \
--cc=peterz@infradead.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox