Date: Sat, 8 Dec 2012 03:58:16 +0100 From: Baptiste Daroussin <bapt@FreeBSD.org> To: Konstantin Belousov <kostikbel@gmail.com> Cc: stable@freebsd.org, fs@freebsd.org Subject: Re: nullfs changes MFC Message-ID: <20121208025816.GC88230@ithaqua.etoilebsd.net> In-Reply-To: <20121208010109.GH3013@kib.kiev.ua> References: <20121208010109.GH3013@kib.kiev.ua>
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--6zdv2QT/q3FMhpsV Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Dec 08, 2012 at 03:01:09AM +0200, Konstantin Belousov wrote: > Hi, > I am going to merge latest batch of the nullfs improvements into > stable/9. This will bring up significant performance enchancements due > to use of the shared locks for lookups if the lower layer supports it, > much better caching on the nullfs layer, and proper handling of the text > segments on the nullfs. Also, it should improve the error recovery and > some corner cases with locking. >=20 > Unfortunately, the merge would break KBI for VFS, since it needs 5 new > VOP slots, and only three spares are left. We already are very liberal > with the VFS KBI, so I do not feel that the merge is not acceptable, due > to the benefits it brings to the nullfs. >=20 > The merge is available at=20 > http://people.freebsd.org/~kib/misc/nullfs_9.1.patch Sorry I haven't checked the latest zfs related MFC, but for some time there= was an issue with nullfs improvements and zfs, will this mfc be synchronize wit= h the mfc of the related zfs fixes? regards, Bapt --6zdv2QT/q3FMhpsV Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlDCrMgACgkQ8kTtMUmk6EydgQCfRQIxqYF/JPfz2yO9KyQX282K 40UAoKLAfTk0SfRqKLdkaBSg7/Wz0YYW =E7wz -----END PGP SIGNATURE----- --6zdv2QT/q3FMhpsV--
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