linux-kernel - Re: [PATCH v2 5/5] fat: permit to return phy block number by fibmap in fallocated region

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Message-ID: <8738m7fge5.fsf@devron.myhome.or.jp>
Date:	Fri, 06 Dec 2013 00:48:18 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Namjae Jeon <linkinjeon@...il.com>
Cc:	akpm@...ux-foundation.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Namjae Jeon <namjae.jeon@...sung.com>,
	Amit Sahrawat <a.sahrawat@...sung.com>
Subject: Re: [PATCH v2 5/5] fat: permit to return phy block number by fibmap in fallocated region

Namjae Jeon <linkinjeon@...il.com> writes:

>> ->i_mutex doesn't work for swapfile.
> Sorry, Actually, I don't understand why it is related with swapfile.
> Could you elaborate more ?

swapfile.c calls ->bmap to know physical address in swapfile. However,
swapfile.c calls ->bmap under inode->i_mutex.

Thanks.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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