Re: [PATCH 3/8] xfs: remove nonblocking mode from xfs_vm_writepage

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This error handling was the biggest obstacle last time we tried it,
so let's remove it for now.  However:

On Wed, Aug 12, 2015 at 08:49:43AM +1000, Dave Chinner wrote:
> Remove the nonblocking optimisation done for mapping lookups during
> writeback. It's not clear that leaving a hole in the writeback range
> just because we couldn't get a lock is really a win, as it makes us
> do another small random IO later on rather than a large sequential
> IO now.

The fs-writeback.c will usually move to a different inode, so I don't
think it's actually that bad.

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