diff options
Diffstat (limited to 'sys/nfsclient/nfs_vfsops.c')
| -rw-r--r-- | sys/nfsclient/nfs_vfsops.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/nfsclient/nfs_vfsops.c b/sys/nfsclient/nfs_vfsops.c index 79659d0..8498ee4 100644 --- a/sys/nfsclient/nfs_vfsops.c +++ b/sys/nfsclient/nfs_vfsops.c @@ -1408,10 +1408,20 @@ nfs_sync(struct mount *mp, int waitfor) td = curthread; + MNT_ILOCK(mp); + /* + * If a forced dismount is in progress, return from here so that + * the umount(2) syscall doesn't get stuck in VFS_SYNC() before + * calling VFS_UNMOUNT(). + */ + if ((mp->mnt_kern_flag & MNTK_UNMOUNTF) != 0) { + MNT_IUNLOCK(mp); + return (EBADF); + } + /* * Force stale buffer cache information to be flushed. */ - MNT_ILOCK(mp); loop: MNT_VNODE_FOREACH(vp, mp, mvp) { VI_LOCK(vp); |
