From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@infradead.org>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
axboe@kernel.dk
Subject: Re: fs: Inode cache scalability V3
Date: Wed, 13 Oct 2010 20:06:34 -0400 [thread overview]
Message-ID: <20101014000634.GA21905@infradead.org> (raw)
In-Reply-To: <20101013235552.GA4681@dastard>
On Thu, Oct 14, 2010 at 10:55:52AM +1100, Dave Chinner wrote:
> > I wonder what's a good workaround for that. Just flushing out all
> > dirty state of a block device inode on last close would fix, but we'd
> > still have all the dragons hidden underneath until we finally sort
> > out the bdi reference mess.
>
> Perhaps for the moment make __blkdev_put() move the inode onto the
> dirty lists for the default bdi when it switches them???in the
> mapping? e.g. add a "inode_switch_bdi" helper that is only called in
> this case?
I really hate to sprinkle special cases all over, but given that Linus
decreed he's not going to take larger writeback changes which would be
required to fix this for .37 it'll be hard to avoid this.
Note that it would really be a bdev_inode_switch_bdi - since the move
to using ->s_bdi for all other inodes these hacks aren't required
anymore, it's just the block devices that continue using the bdi
from the mapping that are causing problems.
prev parent reply other threads:[~2010-10-14 0:06 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-13 0:15 fs: Inode cache scalability V3 Dave Chinner
2010-10-13 0:15 ` [PATCH 01/18] kernel: add bl_list Dave Chinner
2010-10-13 0:15 ` [PATCH 02/18] fs: Convert nr_inodes and nr_unused to per-cpu counters Dave Chinner
2010-10-13 0:15 ` [PATCH 03/18] fs: Implement lazy LRU updates for inodes Dave Chinner
2010-10-13 13:32 ` Christoph Hellwig
2010-10-16 0:11 ` Dave Chinner
2010-10-16 7:56 ` Nick Piggin
2010-10-13 0:15 ` [PATCH 04/18] fs: inode split IO and LRU lists Dave Chinner
2010-10-13 11:31 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 05/18] fs: Clean up inode reference counting Dave Chinner
2010-10-13 11:33 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 06/18] exofs: use iput() for inode reference count decrements Dave Chinner
2010-10-13 11:34 ` Christoph Hellwig
2010-10-13 14:49 ` Boaz Harrosh
2010-10-17 1:24 ` Christoph Hellwig
2010-10-24 18:06 ` Boaz Harrosh
2010-10-13 0:15 ` [PATCH 07/18] fs: rework icount to be a locked variable Dave Chinner
2010-10-13 11:36 ` Christoph Hellwig
2010-10-16 0:15 ` Dave Chinner
2010-10-16 0:20 ` Dave Chinner
2010-10-16 0:23 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 08/18] fs: Factor inode hash operations into functions Dave Chinner
2010-10-13 0:15 ` [PATCH 09/18] fs: Introduce per-bucket inode hash locks Dave Chinner
2010-10-13 11:41 ` Christoph Hellwig
2010-10-13 15:05 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 10/18] fs: add a per-superblock lock for the inode list Dave Chinner
2010-10-13 0:15 ` [PATCH 11/18] fs: split locking of inode writeback and LRU lists Dave Chinner
2010-10-13 3:26 ` Lin Ming
2010-10-13 13:18 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 12/18] fs: Protect inode->i_state with the inode->i_lock Dave Chinner
2010-10-13 13:27 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 13/18] fs: introduce a per-cpu last_ino allocator Dave Chinner
2010-10-13 0:15 ` [PATCH 14/18] fs: Make iunique independent of inode_lock Dave Chinner
2010-10-13 0:15 ` [PATCH 15/18] fs: icache remove inode_lock Dave Chinner
2010-10-13 2:09 ` Dave Chinner
2010-10-13 13:42 ` Christoph Hellwig
2010-10-13 0:15 ` [PATCH 16/18] fs: Reduce inode I_FREEING and factor inode disposal Dave Chinner
2010-10-13 13:51 ` Christoph Hellwig
2010-10-13 0:16 ` [PATCH 17/18] fs: split __inode_add_to_list Dave Chinner
2010-10-13 15:08 ` Christoph Hellwig
2010-10-13 0:16 ` [PATCH 18/18] fs: do not assign default i_ino in new_inode Dave Chinner
2010-10-16 7:57 ` Nick Piggin
2010-10-16 16:30 ` Christoph Hellwig
2010-10-13 14:51 ` fs: Inode cache scalability V3 Christoph Hellwig
2010-10-13 15:58 ` Christoph Hellwig
2010-10-13 21:46 ` Christoph Hellwig
2010-10-13 23:36 ` Christoph Hellwig
2010-10-13 23:55 ` Dave Chinner
2010-10-14 0:06 ` Christoph Hellwig [this message]
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