Re: [PATCHv4 3/3] jbd/jbd2: use non-movable memory for the jbd superblock

[Theodore Ts'o]

On Thu, Sep 04, 2014 at 04:29:41PM +0900, Gioh Kim wrote:
> A long-lasting buffer-cache can distrub page migration so that
> it must be allocated from non-movable area.
> 
> The journal_init_inode is creating a buffer-cache for superblock journaling.
> The superblock exists until system shutdown so that the buffer-cache
> for the superblock would also exist for a long time
> and it can distrub page migration.
> 
> This patch make the buffer-cache be allocated from non-movable area
> not to distrub page migration.
> 
> Signed-off-by: Gioh Kim <gioh.kim@xxxxxxx>
> Reviewed-by: Jan Kara <jack@xxxxxxx>

Thanks, I've applied this to the ext4 git tree with a slightly
rewritten commit description (for clarity).

						- Ted
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