Date: Sat, 14 May 2016 20:35:42 +0000 From: Alexey Dokuchaev <danfe@FreeBSD.org> To: Rick Macklem <rmacklem@FreeBSD.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r299753 - head/sys/fs/fuse Message-ID: <20160514203542.GA21013@FreeBSD.org> In-Reply-To: <201605142003.u4EK3MwV021470@repo.freebsd.org> References: <201605142003.u4EK3MwV021470@repo.freebsd.org>
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On Sat, May 14, 2016 at 08:03:22PM +0000, Rick Macklem wrote: > New Revision: 299753 > URL: https://svnweb.freebsd.org/changeset/base/299753 > > Log: > Fix fuse to use DIRECT_IO when required. > > When a file is opened write-only and a partial block was written, > buffered I/O would try and read the whole block in. This would > result in a hung thread, since there was no open (fuse filehandle) > that allowed reading. This patch avoids the problem by forcing > DIRECT_IO for this case. > It also sets DIRECT_IO when the file system specifies the FN_DIRECTIO > flag in its reply to the open. Since you're at fuse now, perhaps you could also have a look at PR 195000? https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=195000 ./danfe
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