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authormjg <mjg@FreeBSD.org>2014-10-20 18:00:50 +0000
committermjg <mjg@FreeBSD.org>2014-10-20 18:00:50 +0000
commit12e0034dd069b0f2d2b0cf11d216afbe99094438 (patch)
treee51e6a7989eefd8dc56ac47c5d0db6b3380c4a81 /sys/fs/nullfs
parentd6c735be7798e52e8a242ae20504aa525caf1b00 (diff)
downloadFreeBSD-src-12e0034dd069b0f2d2b0cf11d216afbe99094438.zip
FreeBSD-src-12e0034dd069b0f2d2b0cf11d216afbe99094438.tar.gz
Provide vfs suspension support only for filesystems which need it, take
two. nullfs and unionfs need to request suspension if underlying filesystem(s) use it. Utilize mnt_kern_flag for this purpose. This is a fixup for 273271. No strong objections from: kib Pointy hat to: mjg MFC after: 2 weeks
Diffstat (limited to 'sys/fs/nullfs')
-rw-r--r--sys/fs/nullfs/null_vfsops.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/fs/nullfs/null_vfsops.c b/sys/fs/nullfs/null_vfsops.c
index 80824a5..fd3d385 100644
--- a/sys/fs/nullfs/null_vfsops.c
+++ b/sys/fs/nullfs/null_vfsops.c
@@ -198,6 +198,8 @@ nullfs_mount(struct mount *mp)
MNTK_EXTENDED_SHARED);
}
mp->mnt_kern_flag |= MNTK_LOOKUP_EXCL_DOTDOT;
+ mp->mnt_kern_flag |= lowerrootvp->v_mount->mnt_kern_flag &
+ MNTK_SUSPENDABLE;
MNT_IUNLOCK(mp);
mp->mnt_data = xmp;
vfs_getnewfsid(mp);
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