linux-ext4 - Re: ext4_ext_insert

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Message-ID: <20111020034811.GA26265@localhost>
Date:	Thu, 20 Oct 2011 11:48:11 +0800
From:	Wu Fengguang <fengguang.wu@...el.com>
To:	Tao Ma <tm@....ma>
Cc:	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
	Theodore Ts'o <tytso@....edu>, Jan Kara <jack@...e.cz>
Subject: Re: ext4_ext_insert_index error

> > I got these errors when switch the kernel from 3.1-rc8 to linux-next.  Commit
> > 4fd30c0330ba951 looks most likely the culprit in the linux-next change set.
> This should be already fixed in Ted's tree. Please check whether the fix
> works.
> http://comments.gmane.org/gmane.comp.file-systems.ext4/28575

I confirmed that the patch fixed the issue. Thanks!

wfg@bee /export/writeback% ./compare.rb thresh*/*ioless-full-next*+ thresh*/*-ioless-full-ext4*+ 
3.1.0-rc9-ioless-full-next-20111014+  3.1.0-rc9-ioless-full-ext4-ext-index-fix-next-20111014+  
------------------------  ------------------------  
                   31.82        +0.9%        32.12  thresh=1M/ext4-10dd-4k-8p-4096M-1M:10-X
                   52.33        -2.0%        51.31  thresh=1M/ext4-1dd-4k-8p-4096M-1M:10-X
                   19.05      +146.8%        47.01  thresh=1M/ext4-2dd-4k-8p-4096M-1M:10-X
                   35.78        +0.2%        35.84  thresh=8M/ext4-10dd-4k-8p-4096M-8M:10-X
                   55.29        +1.0%        55.85  thresh=8M/ext4-1dd-4k-8p-4096M-8M:10-X
                   18.85      +171.2%        51.12  thresh=8M/ext4-2dd-4k-8p-4096M-8M:10-X
                  213.11       +28.2%       273.25  TOTAL write_bw
wfg@bee /export/writeback% g -l ext4_ext_insert_index thresh*/*-ioless-full-ext4*+/dmesg
(no errors found)

Thanks,
Fengguang

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