From: Christoph Hellwig <hch@lst.de>
To: Dan Williams <dan.j.williams@intel.com>
Cc: linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org
Subject: fs_dax_get_by_host in the hot path
Date: Thu, 24 Aug 2017 15:45:00 +0200 [thread overview]
Message-ID: <20170824134500.GA25037@lst.de> (raw)
Hi Dan,
I just noticed that we now do a fs_dax_get_by_host in every
iomap_begin call for DAX. This function iterates a list,
does a string compared and igrab. I really think we need
to cache this in the superblock (possible even the fs
superblock) similar to what we do for the block device.
next reply other threads:[~2017-08-24 13:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-24 13:45 Christoph Hellwig [this message]
2017-08-24 14:48 ` fs_dax_get_by_host in the hot path Dan Williams
2017-08-24 15:19 ` Christoph Hellwig
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