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Lock the vm object when freeing a vm page.

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This commit is contained in:
Alan Cox 2003-06-19 03:08:10 +00:00
parent 9c77e81b5d
commit 95aada383f
1 changed files with 7 additions and 1 deletions
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8
sys/fs/nwfs/nwfs_io.c
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@ -404,6 +404,7 @@ nwfs_getpages(ap)
struct ucred *cred;
struct nwmount *nmp;
struct nwnode *np;
vm_object_t object;
vm_page_t *pages;
vp = ap->a_vp;
@ -414,7 +415,7 @@ nwfs_getpages(ap)
pages = ap->a_m;
count = ap->a_count;
if (vp->v_object == NULL) {
if ((object = vp->v_object) == NULL) {
printf("nwfs_getpages: called with non-merged cache vnode??\n");
return VM_PAGER_ERROR;
}
@ -439,6 +440,8 @@ nwfs_getpages(ap)
relpbuf(bp, &nwfs_pbuf_freecnt);
if (error)
VM_OBJECT_LOCK(object);
if (error && (uio.uio_resid == count)) {
printf("nwfs_getpages: error %d\n",error);
vm_page_lock_queues();
@ -447,6 +450,7 @@ nwfs_getpages(ap)
vm_page_free(pages[i]);
}
vm_page_unlock_queues();
VM_OBJECT_UNLOCK(object);
return VM_PAGER_ERROR;
}
@ -493,6 +497,8 @@ nwfs_getpages(ap)
}
}
vm_page_unlock_queues();
if (error)
VM_OBJECT_UNLOCK(object);
return 0;
#endif /* NWFS_RWCACHE */
}