From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: Re: [PATCH v6 12/20] fs: add a new fstype flag to indicate how writeback errors are tracked Date: Thu, 15 Jun 2017 06:42:12 -0400 Message-ID: <1497523332.4556.1.camel@redhat.com> References: <20170612122316.13244-1-jlayton@redhat.com> <20170612122316.13244-15-jlayton@redhat.com> <20170612124513.GC18360@infradead.org> <1497349472.5762.1.camel@redhat.com> <20170614064731.GB3598@infradead.org> <1497461083.6752.7.camel@redhat.com> <20170615082221.GA22809@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Andrew Morton , Al Viro , Jan Kara , tytso@mit.edu, axboe@kernel.dk, mawilcox@microsoft.com, ross.zwisler@linux.intel.com, corbet@lwn.net, Chris Mason , Josef Bacik , David Sterba , "Darrick J . Wong" , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-block@vger.kernel.org To: Christoph Hellwig Return-path: In-Reply-To: <20170615082221.GA22809@infradead.org> Sender: owner-linux-mm@kvack.org List-Id: linux-ext4.vger.kernel.org On Thu, 2017-06-15 at 01:22 -0700, Christoph Hellwig wrote: > On Wed, Jun 14, 2017 at 01:24:43PM -0400, Jeff Layton wrote: > > In this smaller set, it's only really used for DAX. > > DAX only is implemented by three filesystems, please just fix them > up in one go. > Ok. > > sync_file_range: ->fsync isn't called directly there, and I think we > > probably want similar semantics to fsync() for it > > sync_file_range is only supposed to sync data, so it should not call > ->fsync. > Correct. But if there is a data writeback error, should we report an error on all open fds at that time (like we will for fsync)? I think we probably do want to do that, but like you say...there is no file op for sync_file_range. It'll need some way to figure out what sort of error tracking is in play. > > JBD2: will try to re-set the error after clearing it with > > filemap_fdatawait. That's problematic with the new infrastructure so we > > need some way to avoid it. > > JBD2 only has two users, please fix them up in one go. I came up with a fix yesterday that makes the flag unnecessary there. Thanks, -- Jeff Layton -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org