linux-kernel - Re: [GIT PULL] readlink cleanup

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Date:   Sun, 11 Dec 2016 02:36:27 +0000
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Miklos Szeredi <miklos@...redi.hu>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-unionfs@...r.kernel.org
Subject: Re: [GIT PULL] readlink cleanup

On Sat, Dec 10, 2016 at 09:41:45PM +0100, Miklos Szeredi wrote:
> Hi Al,
> 
> Please pull from:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git readlink
> 
> This is a rework of the readlink cleanup patchset.  Now readlink(2) does the
> following:
> 
>  - if i_op->readlink() is non-NULL (only proc and afs mountpoints for now) then
>    it calls that;
>  - otherwise call i_op->get_link();
>  - signature of ->readlink() now matches that of ->get_link();
> 
> This is against the #misc branch (the stats look better that way ;)

I'm still not sure what does "vfs: convert ->readlink to same signature as
->get_link" buy us.  If anything, the result appears to be more complex -
you make freeing that buffer delayed (and introduce a dynamically allocated
buffer in one case that didn't use it)...