linux-kernel - Re: [f2fs-dev] [PATCH 2/2] f2fs: fix to release inode correctly

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Message-ID: <20150824225105.GA8056@jaegeuk-mac02.mot.com>
Date:	Mon, 24 Aug 2015 15:52:46 -0700
From:	Jaegeuk Kim <jaegeuk@...nel.org>
To:	Chao Yu <chao2.yu@...sung.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [f2fs-dev] [PATCH 2/2] f2fs: fix to release inode correctly

Hi Chao,

On Mon, Aug 24, 2015 at 09:54:23AM -0700, Jaegeuk Kim wrote:
> On Mon, Aug 24, 2015 at 05:40:45PM +0800, Chao Yu wrote:
> > In following call stack, if unfortunately we lose all chances to truncate
> > inode page in remove_inode_page, eventually we will add the nid allocated
> > previously into free nid cache, this nid is with NID_NEW status and with
> > NEW_ADDR in its blkaddr pointer:
> > 
> >  - f2fs_create
> >   - f2fs_add_link
> >    - __f2fs_add_link
> >     - init_inode_metadata
> >      - new_inode_page
> >       - new_node_page
> >        - set_node_addr(, NEW_ADDR)
> >      - f2fs_init_acl   failed
> >      - remove_inode_page  failed
> >   - handle_failed_inode
> >    - remove_inode_page  failed
> >    - iput
> >     - f2fs_evict_inode
> >      - remove_inode_page  failed
> >      - alloc_nid_failed   cache a nid with valid blkaddr: NEW_ADDR

Unfortunately, this couldn't fix my bug case.
I'm still struggling to find out something tho.
Meanwhile, let's stay with both of the patches.

Thanks,
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