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Acquire vm_mtx before calling vm_pager_deallocate.

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Reviewed by:	phk
This commit is contained in:
Dima Dorfman 2001-05-27 00:42:46 +00:00
parent 83b65cc9cb
commit 5a025167e7
1 changed files with 7 additions and 1 deletions
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8
sys/dev/md/md.c
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@ -711,8 +711,11 @@ mddestroy(struct md_s *sc, struct md_ioctl *mdio, struct proc *p)
(void)vn_close(sc->vnode, sc->flags & MD_READONLY ? FREAD : (FREAD|FWRITE), sc->cred, p);
if (sc->cred != NULL)
crfree(sc->cred);
if (sc->object != NULL)
if (sc->object != NULL) {
mtx_lock(&vm_mtx);
vm_pager_deallocate(sc->object);
mtx_unlock(&vm_mtx);
}
if (sc->secp != NULL) {
for (u = 0; u < sc->nsect; u++)
if ((uintptr_t)sc->secp[u] > 255)
@ -763,17 +766,20 @@ mdcreate_swap(struct md_ioctl *mdio, struct proc *p)
* Note the truncation.
*/
mtx_lock(&vm_mtx);
sc->secsize = PAGE_SIZE;
sc->nsect = mdio->md_size / (PAGE_SIZE / DEV_BSIZE);
sc->object = vm_pager_allocate(OBJT_SWAP, NULL, sc->secsize * (vm_offset_t)sc->nsect, VM_PROT_DEFAULT, 0);
if (mdio->md_options & MD_RESERVE) {
if (swap_pager_reserve(sc->object, 0, sc->nsect) < 0) {
vm_pager_deallocate(sc->object);
mtx_unlock(&vm_mtx);
sc->object = NULL;
mddestroy(sc, mdio, p);
return(EDOM);
}
}
mtx_unlock(&vm_mtx);
error = mdsetcred(sc, p->p_ucred);
if (error)
mddestroy(sc, mdio, p);