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Re: [PATCH v4] fuse: Add support for passthrough read/write

From Richard Weinberger <richard@nod.at>
Newsgroups linux.kernel
Subject Re: [PATCH v4] fuse: Add support for passthrough read/write
Date 2016-01-21 13:50 +0100
Message-ID <qTmQy-5jR-5@gated-at.bofh.it> (permalink)
References <qTb8J-5Bh-5@gated-at.bofh.it> <qTmGS-5g3-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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Am 21.01.2016 um 13:38 schrieb Bernd Schubert:
> On 01/21/2016 01:16 AM, Nikhilesh Reddy wrote:
>> Add support for filesystem passthrough read/write of files
>> when enabled in userspace through the option FUSE_PASSTHROUGH.
>>
>> There are many FUSE based filesystems that perform checks or
>> enforce policy or perform some kind of decision making in certain
>> functions like the "open" call but simply act as a "passthrough"
>> when performing operations such as read or write.
>>
>> When FUSE_PASSTHROUGH is enabled all the reads and writes
>> to the fuse mount point go directly to the passthrough filesystem
>> i.e a native filesystem that actually hosts the files rather than
>> through the fuse daemon. All requests that aren't read/write still
>> go thought the userspace code.
>>
>> This allows for significantly better performance on read and writes.
>> The difference in performance between fuse and the native lower
>> filesystem is negligible.
>>
>> There is also a significant cpu/power savings that is achieved which
>> is really important on embedded systems that use fuse for I/O.
>>
>> Signed-off-by: Nikhilesh Reddy <reddyn@codeaurora.org>
> 
> I think it is common style to add a change log between patch set
> versions in the patch description.

And please slow down a bit. Collect a few review comments and then
do another version of your patch. :-)

Thanks,
//richard

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Thread

[PATCH v4] fuse: Add support for passthrough read/write Nikhilesh Reddy <reddyn@codeaurora.org> - 2016-01-21 01:20 +0100
  Re: [PATCH v4] fuse: Add support for passthrough read/write Bernd Schubert <bernd.schubert@fastmail.fm> - 2016-01-21 13:40 +0100
    Re: [PATCH v4] fuse: Add support for passthrough read/write Richard Weinberger <richard@nod.at> - 2016-01-21 13:50 +0100
      Re: [PATCH v4] fuse: Add support for passthrough read/write Nikhilesh Reddy <reddyn@codeaurora.org> - 2016-01-21 19:10 +0100
  Re: [fuse-devel] [PATCH v4] fuse: Add support for passthrough read/write Nikhilesh Reddy <reddyn@codeaurora.org> - 2016-01-25 21:50 +0100

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