diff options
Diffstat (limited to 'sys/kern/vfs_vnops.c')
| -rw-r--r-- | sys/kern/vfs_vnops.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/kern/vfs_vnops.c b/sys/kern/vfs_vnops.c index 336086c..4f1556a 100644 --- a/sys/kern/vfs_vnops.c +++ b/sys/kern/vfs_vnops.c @@ -443,6 +443,7 @@ vn_read(fp, uio, cred, flags, td) struct vnode *vp; int error, ioflag; + mtx_lock(&Giant); KASSERT(uio->uio_td == td, ("uio_td %p is not td %p", uio->uio_td, td)); vp = (struct vnode *)fp->f_data; @@ -463,6 +464,7 @@ vn_read(fp, uio, cred, flags, td) fp->f_offset = uio->uio_offset; fp->f_nextoff = uio->uio_offset; VOP_UNLOCK(vp, 0, td); + mtx_unlock(&Giant); return (error); } @@ -481,6 +483,7 @@ vn_write(fp, uio, cred, flags, td) struct mount *mp; int error, ioflag; + mtx_lock(&Giant); KASSERT(uio->uio_td == td, ("uio_td %p is not td %p", uio->uio_td, td)); vp = (struct vnode *)fp->f_data; @@ -498,8 +501,10 @@ vn_write(fp, uio, cred, flags, td) ioflag |= IO_SYNC; mp = NULL; if (vp->v_type != VCHR && - (error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) + (error = vn_start_write(vp, &mp, V_WAIT | PCATCH)) != 0) { + mtx_unlock(&Giant); return (error); + } VOP_LEASE(vp, td, cred, LEASE_WRITE); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY, td); if ((flags & FOF_OFFSET) == 0) @@ -511,6 +516,7 @@ vn_write(fp, uio, cred, flags, td) fp->f_nextoff = uio->uio_offset; VOP_UNLOCK(vp, 0, td); vn_finished_write(mp); + mtx_unlock(&Giant); return (error); } |
