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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[-- Attachment #1 --] 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. > > 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. > > The merge is available at > 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 with the mfc of the related zfs fixes? regards, Bapt [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlDCrMgACgkQ8kTtMUmk6EydgQCfRQIxqYF/JPfz2yO9KyQX282K 40UAoKLAfTk0SfRqKLdkaBSg7/Wz0YYW =E7wz -----END PGP SIGNATURE-----help
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