Date: Fri, 22 May 2020 18:03:15 +0000 (UTC) From: Alan Somers <asomers@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r361399 - head/sys/fs/fuse Message-ID: <202005221803.04MI3Fvu056891@repo.freebsd.org>
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Author: asomers Date: Fri May 22 18:03:14 2020 New Revision: 361399 URL: https://svnweb.freebsd.org/changeset/base/361399 Log: Disable nullfs cacheing on top of fusefs Nullfs cacheing can keep a large number of vnodes active. That results in more active FUSE file handles, causing some FUSE servers to use extra resources. Disable nullfs cacheing for fusefs, just like we already do for NFSv4. PR: 245688 Reported by: MooseFS FreeBSD Team <freebsd@moosefs.pro> MFC after: 2 weeks Modified: head/sys/fs/fuse/fuse_vfsops.c Modified: head/sys/fs/fuse/fuse_vfsops.c ============================================================================== --- head/sys/fs/fuse/fuse_vfsops.c Fri May 22 17:52:09 2020 (r361398) +++ head/sys/fs/fuse/fuse_vfsops.c Fri May 22 18:03:14 2020 (r361399) @@ -425,6 +425,11 @@ fuse_vfsop_mount(struct mount *mp) */ mp->mnt_flag &= ~MNT_LOCAL; mp->mnt_kern_flag |= MNTK_USES_BCACHE; + /* + * Disable nullfs cacheing because it can consume too many resources in + * the FUSE server. + */ + mp->mnt_kern_flag |= MNTK_NULL_NOCACHE; MNT_IUNLOCK(mp); /* We need this here as this slot is used by getnewvnode() */ mp->mnt_stat.f_iosize = maxbcachebuf;
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