Re: [PATCH] Btrfs: fix all callers of read_tree_block

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On Wed, Apr 24, 2013 at 02:17:48AM -0600, Liu Bo wrote:
> On Tue, Apr 23, 2013 at 02:20:22PM -0400, Josef Bacik wrote:
> > We kept leaking extent buffers when mounting a broken file system and it turns
> > out it's because not everybody uses read_tree_block properly.  You need to check
> > and make sure the extent_buffer is uptodate before you use it.  This patch fixes
> > everybody who calls read_tree_block directly to make sure they check that it is
> > uptodate and free it and return an error if it is not.  With this we no longer
> > leak EB's when things go horribly wrong.  Thanks,
> 
> What about hook the check into read_tree_block()?
> 
> That way we can save much efforts.

Because other people do other things when it gets back from read_tree_block(),
the readahead code and the search ahead code to name a few.  Thanks,

Josef
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