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Fix initialization of "bsize" in vnode_pager_haspage(). It must happen

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after the check for the mount point still existing or else the system
will panic if someone forcibly unmounted the filesystem.
This commit is contained in:
David Greenman 1995-10-19 21:35:03 +00:00
parent 32e0d22da8
commit eed2d59b25
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=11576
1 changed files with 3 additions and 5 deletions
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8
sys/vm/vnode_pager.c
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@ -38,7 +38,7 @@
* SUCH DAMAGE.
*
* from: @(#)vnode_pager.c 7.5 (Berkeley) 4/20/91
* $Id: vnode_pager.c,v 1.48 1995/09/11 00:46:19 dyson Exp $
* $Id: vnode_pager.c,v 1.49 1995/09/12 14:42:43 dyson Exp $
*/
/*
@ -188,11 +188,8 @@ vnode_pager_haspage(object, offset, before, after)
{
struct vnode *vp = object->handle;
daddr_t bn;
int err, run;
daddr_t reqblock;
int poff;
int bsize = vp->v_mount->mnt_stat.f_iosize;
int pagesperblock;
int err, run, poff, bsize, pagesperblock;
/*
* If filesystem no longer mounted or offset beyond end of file we do
@ -201,6 +198,7 @@ vnode_pager_haspage(object, offset, before, after)
if ((vp->v_mount == NULL) || (offset >= object->un_pager.vnp.vnp_size))
return FALSE;
bsize = vp->v_mount->mnt_stat.f_iosize;
pagesperblock = bsize / PAGE_SIZE;
reqblock = offset / bsize;
err = VOP_BMAP(vp, reqblock, (struct vnode **) 0, &bn,