linux-ext4 - Re: [PATCH] ext4: missing trace_ext4_ext_map_blocks_exit after calling ext4_ext_handle_uninitialized

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Message-ID: <20121108195006.GJ19977@thunk.org>
Date:	Thu, 8 Nov 2012 14:50:06 -0500
From:	Theodore Ts'o <tytso@....edu>
To:	Zheng Liu <gnehzuil.liu@...il.com>
Cc:	linux-ext4@...r.kernel.org, Zheng Liu <wenqing.lz@...bao.com>
Subject: Re: [PATCH] ext4: missing trace_ext4_ext_map_blocks_exit after
 calling ext4_ext_handle_uninitialized_extents

On Tue, Oct 16, 2012 at 03:31:36PM +0800, Zheng Liu wrote:
> From: Zheng Liu <wenqing.lz@...bao.com>
> 
> When ext4_ext_handle_uninitialized_extents is called, we will directly return
> from ext4_ext_map_blocks.  The trace point of trace_ext4_ext_map_blocks_exit
> isn't called, and the user doesn't see any result.  This patch tries to fix this
> problem.
> 
> Meanwhile in ext4_ext_handle_uninitialized_extents it returns errors or the
> number of allocated blocks.  So 'ret' variable can be removed due to previously
> modifications.
> 
> Signed-off-by: Zheng Liu <wenqing.lz@...bao.com>

Applied, thanks.

					- Ted
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