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Date: Mon, 17 Sep 2012 11:56:23 +0200 From: Jan Kara <jack@...e.cz> To: OGAWA Hirofumi <hirofumi@...l.parknet.co.jp> Cc: Jan Kara <jack@...e.cz>, Fengguang Wu <fengguang.wu@...el.com>, viro@...iv.linux.org.uk, hch@....de, linux-kernel@...r.kernel.org Subject: Re: [PATCH] Fix queueing work if !bdi_cap_writeback_dirty() On Mon 17-09-12 18:39:05, OGAWA Hirofumi wrote: > Jan Kara <jack@...e.cz> writes: > > >> I think you know how to solve it though. You can add the periodic flush > >> in own task. And you can check bdi->dirty_exceeded in any handlers. > > Sure, you can have your private thread. That is possible but you will > > have to duplicate flusher logic and you will still get odd behavior e.g. > > when your filesystem is on one partition and another filesystem is on a > > different partition of the same disk. > > Right. But it is what current FSes are doing more or less. It's not. Page writeback is respected by all filesystems in most cases AFAIK. Inode writeback is a different issue but that's not so interesting from mm point of view... Honza -- Jan Kara <jack@...e.cz> SUSE Labs, CR -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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