From: Christoph Hellwig <hch@infradead.org>
To: Waiman Long <Waiman.Long@hpe.com>
Cc: Theodore Ts'o <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org,
Tejun Heo <tj@kernel.org>, Christoph Lameter <cl@linux.com>,
Scott J Norton <scott.norton@hpe.com>,
Douglas Hatch <doug.hatch@hpe.com>,
Toshimitsu Kani <toshi.kani@hpe.com>
Subject: Re: [PATCH v3 1/2] ext4: Pass in DIO_SKIP_DIO_COUNT flag if inode_dio_begin() called
Date: Wed, 20 Apr 2016 13:58:01 -0700 [thread overview]
Message-ID: <20160420205801.GA24609@infradead.org> (raw)
In-Reply-To: <1460484775-33359-2-git-send-email-Waiman.Long@hpe.com>
FYI, none of the Dax code even needs to ever touch the dio_count,
as dax I/O can't be asynchronous, and we thus don't need it to protect
against truncate. I'd suggest to remove it and then end_io callback
from the DAX code entirely as a start and then move from there.
next prev parent reply other threads:[~2016-04-20 20:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-12 18:12 [PATCH v3 0/2] ext4: Improve parallel I/O performance on NVDIMM Waiman Long
2016-04-12 18:12 ` [PATCH v3 1/2] ext4: Pass in DIO_SKIP_DIO_COUNT flag if inode_dio_begin() called Waiman Long
2016-04-14 3:16 ` Dave Chinner
2016-04-14 16:21 ` Waiman Long
2016-04-15 8:17 ` Dave Chinner
2016-04-15 17:17 ` Waiman Long
2016-04-15 22:19 ` Dave Chinner
2016-04-18 19:46 ` Waiman Long
2016-04-19 23:01 ` Dave Chinner
2016-04-20 15:59 ` Waiman Long
2016-04-20 20:58 ` Christoph Hellwig [this message]
2016-04-21 18:15 ` Waiman Long
2016-04-25 11:48 ` Christoph Hellwig
2016-04-26 16:32 ` Waiman Long
2016-04-12 18:12 ` [PATCH v3 2/2] ext4: Make cache hits/misses per-cpu counts Waiman Long
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