Date: Sun, 22 Jun 2014 21:14:34 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r267748 - stable/10/sys/kern Message-ID: <201406222114.s5MLEYnZ074289@svn.freebsd.org>
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Author: mav Date: Sun Jun 22 21:14:34 2014 New Revision: 267748 URL: http://svnweb.freebsd.org/changeset/base/267748 Log: MFC r267362: Remove unneeded mountlist_mtx acquisition from sync_fsync(). All struct mount fields accessed by sync_fsync() are protected by MNT_MTX. Modified: stable/10/sys/kern/vfs_subr.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/kern/vfs_subr.c ============================================================================== --- stable/10/sys/kern/vfs_subr.c Sun Jun 22 20:29:51 2014 (r267747) +++ stable/10/sys/kern/vfs_subr.c Sun Jun 22 21:14:34 2014 (r267748) @@ -3654,11 +3654,8 @@ sync_fsync(struct vop_fsync_args *ap) * Walk the list of vnodes pushing all that are dirty and * not already on the sync list. */ - mtx_lock(&mountlist_mtx); - if (vfs_busy(mp, MBF_NOWAIT | MBF_MNTLSTLOCK) != 0) { - mtx_unlock(&mountlist_mtx); + if (vfs_busy(mp, MBF_NOWAIT) != 0) return (0); - } if (vn_start_write(NULL, &mp, V_NOWAIT) != 0) { vfs_unbusy(mp); return (0);
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