diff options
| author | dd <dd@FreeBSD.org> | 2001-05-27 00:42:46 +0000 |
|---|---|---|
| committer | dd <dd@FreeBSD.org> | 2001-05-27 00:42:46 +0000 |
| commit | 8538c8f1d7ea6149f232c4cb147a5821601e7831 (patch) | |
| tree | 1557dbb616f592834cea5c8b34a207c91bb0315d /sys/dev/md/md.c | |
| parent | 338a0b8095b5bfceeb1b67f28b6308afa4b448af (diff) | |
| download | FreeBSD-src-8538c8f1d7ea6149f232c4cb147a5821601e7831.zip FreeBSD-src-8538c8f1d7ea6149f232c4cb147a5821601e7831.tar.gz | |
Acquire vm_mtx before calling vm_pager_deallocate.
Reviewed by: phk
Diffstat (limited to 'sys/dev/md/md.c')
| -rw-r--r-- | sys/dev/md/md.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/sys/dev/md/md.c b/sys/dev/md/md.c index 0aafaec..b541b66 100644 --- a/sys/dev/md/md.c +++ b/sys/dev/md/md.c @@ -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); |
