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Lose the lock on the vnode. Changes to implement proper locking in the

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vnode pager now require this.

Submitted by:	John Dyson
This commit is contained in:
David Greenman 1995-03-19 23:08:12 +00:00
parent e80307946b
commit f5277ae71e
1 changed files with 11 additions and 4 deletions
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15
sys/kern/kern_exec.c
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@ -28,7 +28,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: kern_exec.c,v 1.15 1995/03/10 08:44:20 davidg Exp $
* $Id: kern_exec.c,v 1.16 1995/03/16 18:12:30 bde Exp $
*/
#include <sys/param.h>
@ -137,6 +137,12 @@ execve(p, uap, retval)
goto exec_fail_dealloc;
}
/*
* Lose the lock on the vnode. It isn't needed, and must not
* exist for the pagefault paging to work below.
*/
VOP_UNLOCK(vnodep);
/*
* Check file permissions (also 'opens' file)
*/
@ -182,7 +188,7 @@ execve(p, uap, retval)
goto exec_fail_dealloc;
if (iparams->interpreted) {
/* free old vnode and name buffer */
vput(ndp->ni_vp);
vrele(ndp->ni_vp);
FREE(ndp->ni_cnd.cn_pnbuf, M_NAMEI);
if (vm_map_remove(kernel_map, (vm_offset_t)image_header,
(vm_offset_t)image_header + PAGE_SIZE))
@ -305,7 +311,7 @@ execve(p, uap, retval)
if (vm_map_remove(kernel_map, (vm_offset_t)image_header,
(vm_offset_t)image_header + PAGE_SIZE))
panic("execve: header dealloc failed (2)");
vput(ndp->ni_vp);
vrele(ndp->ni_vp);
FREE(ndp->ni_cnd.cn_pnbuf, M_NAMEI);
return (0);
@ -319,7 +325,8 @@ execve(p, uap, retval)
if (vm_map_remove(kernel_map, (vm_offset_t)image_header,
(vm_offset_t)image_header + PAGE_SIZE))
panic("execve: header dealloc failed (3)");
vput(ndp->ni_vp);
if (ndp->ni_vp)
vrele(ndp->ni_vp);
FREE(ndp->ni_cnd.cn_pnbuf, M_NAMEI);
exec_fail: