d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

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

Browse Source 
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
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7176
1 changed files with 11 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
sys/kern/kern_exec.c
View File

@ -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: