diff options
| -rw-r--r-- | sys/kern/vfs_subr.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/kern/vfs_subr.c b/sys/kern/vfs_subr.c index 5017c72ad3d3..7cd93a3d3413 100644 --- a/sys/kern/vfs_subr.c +++ b/sys/kern/vfs_subr.c @@ -337,8 +337,10 @@ vfs_busy(struct mount *mp, int flags, struct mtx *interlkp, int lkflags; MNT_ILOCK(mp); + MNT_REF(mp); if (mp->mnt_kern_flag & MNTK_UNMOUNT) { if (flags & LK_NOWAIT) { + MNT_REL(mp); MNT_IUNLOCK(mp); return (ENOENT); } @@ -351,7 +353,9 @@ vfs_busy(struct mount *mp, int flags, struct mtx *interlkp, * wakeup needs to be done is at the release of the * exclusive lock at the end of dounmount. */ - msleep(mp, MNT_MTX(mp), PVFS|PDROP, "vfs_busy", 0); + msleep(mp, MNT_MTX(mp), PVFS, "vfs_busy", 0); + MNT_REL(mp); + MNT_IUNLOCK(mp); if (interlkp) mtx_lock(interlkp); return (ENOENT); @@ -361,6 +365,7 @@ vfs_busy(struct mount *mp, int flags, struct mtx *interlkp, lkflags = LK_SHARED | LK_INTERLOCK; if (lockmgr(&mp->mnt_lock, lkflags, MNT_MTX(mp), td)) panic("vfs_busy: unexpected lock failure"); + vfs_rel(mp); return (0); } |