linux-ext4 - Re: [PATCHv2 1/3] fs/buffer.c: allocate buffer cache with user specific flag

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Message-ID: <53F40A12.6040506@lge.com>
Date:	Wed, 20 Aug 2014 11:38:10 +0900
From:	Gioh Kim <gioh.kim@....com>
To:	Jan Kara <jack@...e.cz>
CC:	Alexander Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	Theodore Ts'o <tytso@....edu>,
	Andreas Dilger <adilger.kernel@...ger.ca>,
	linux-ext4@...r.kernel.org, Minchan Kim <minchan@...nel.org>,
	Joonsoo Kim <js1304@...il.com>,
	이건호 <gunho.lee@....com>
Subject: Re: [PATCHv2 1/3] fs/buffer.c: allocate buffer cache with user specific
 flag


>>>> @@ -1381,12 +1383,7 @@ EXPORT_SYMBOL(__find_get_block);
>>>>   struct buffer_head *
>>>>   __getblk(struct block_device *bdev, sector_t block, unsigned size)
>>>>   {
>>>> -       struct buffer_head *bh = __find_get_block(bdev, block, size);
>>>> -
>>>> -       might_sleep();
>>>> -       if (bh == NULL)
>>>> -               bh = __getblk_slow(bdev, block, size);
>>>> -       return bh;
>>>> +       return __getblk_gfp(bdev, block, size, __GFP_MOVABLE);
>>>>   }
>>>>   EXPORT_SYMBOL(__getblk);
>>>    Why did you remove the __find_get_block() call? That looks like a bug.
>    I'm not sure if you didn't miss this comment....

I'm sorry I missed it.
I think calling __find_get_block() in __getblk_gfp() can replace it.
I'm not sure about it.

If anybody disagree with it, I'll change it as the original code.

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