linux-ext4 - Re: [RFC][PATCH] ext4: handle fast symlink properly with inline

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Message-ID: <loom.20140213T180233-750@post.gmane.org>
Date:	Thu, 13 Feb 2014 17:05:03 +0000 (UTC)
From:	Ian Nartowicz <claws@...towicz.co.uk>
To:	linux-ext4@...r.kernel.org
Subject: Re: [RFC][PATCH] ext4: handle fast symlink properly with inline_data

Zheng Liu <gnehzuil.liu <at> gmail.com> writes:

> 
> From: Zheng Liu <wenqing.lz <at> taobao.com>
> 
> This commit tries to fix a bug that we can't read fast symlink properly.
> The following script can hit the bug.
> 

> Hi all,
> 
> I am not sure whether or not we need to enable inline_data for a fast
> symlink inode.  Obviously, it brings a benefit that after enabling
> inline_data feature for a fast symlink we can get more space to store
> the path.  But it seems that the original patch doesn't want to do this
> Another solution for fixing this bug is to disable inline_data for a
> fast symlink.  Any comment?
> 
> Thanks,
> 						- Zheng

I compiled a kernel with this patch and the long symlinks work OK now.  fsck
still complains, of course.

Seems like a fairly rare case, but is there any real downside to supporting it?

--ian

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