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| author | kris <kris@FreeBSD.org> | 2005-10-16 21:45:25 +0000 |
|---|---|---|
| committer | kris <kris@FreeBSD.org> | 2005-10-16 21:45:25 +0000 |
| commit | fa8ac582282505203d00979e1f89505ee3e59cc3 (patch) | |
| tree | 699d26e79e2367e6d85e2b2d679c0e91bfd10eb5 /sys/fs/nullfs/null_vfsops.c | |
| parent | 80700e8efc4882936013101e91714d96fab5709a (diff) | |
| download | FreeBSD-src-fa8ac582282505203d00979e1f89505ee3e59cc3.zip FreeBSD-src-fa8ac582282505203d00979e1f89505ee3e59cc3.tar.gz | |
Reflect mpsafety of the underlying filesystem in the nullfs image.
I benchmarked this by simultaneously extracting 4 large tarballs (basically
world images) on a 4-processor AMD64 system, in a malloc-backed md.
With this patch, system time was reduced by 43%, and wall clock time by 33%.
Submitted by: jeff
MFC after: 1 week
Diffstat (limited to 'sys/fs/nullfs/null_vfsops.c')
| -rw-r--r-- | sys/fs/nullfs/null_vfsops.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/fs/nullfs/null_vfsops.c b/sys/fs/nullfs/null_vfsops.c index 38f0f55..2d3ac6e 100644 --- a/sys/fs/nullfs/null_vfsops.c +++ b/sys/fs/nullfs/null_vfsops.c @@ -180,6 +180,7 @@ nullfs_mount(struct mount *mp, struct thread *td) if (NULLVPTOLOWERVP(nullm_rootvp)->v_mount->mnt_flag & MNT_LOCAL) mp->mnt_flag |= MNT_LOCAL; + mp->mnt_kern_flag |= lowerrootvp->v_mount->mnt_kern_flag | MNTK_MPSAFE; mp->mnt_data = (qaddr_t) xmp; vfs_getnewfsid(mp); |
