sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file

[safe/jmp/linux-2.6] / mm / filemap_xip.c

diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 5b9ec47..1888b2d 100644 (file)
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -89,8 +89,8 @@ do_xip_mapping_read(struct address_space *mapping,
                        }
                }
                nr = nr - offset;
-               if (nr > len)
-                       nr = len;
+               if (nr > len - copied)
+                       nr = len - copied;
 
                error = mapping->a_ops->get_xip_mem(mapping, index, 0,
                                                        &xip_mem, &xip_pfn);
@@ -193,7 +193,7 @@ retry:
                        /* Nuke the page table entry. */
                        flush_cache_page(vma, address, pte_pfn(*pte));
                        pteval = ptep_clear_flush_notify(vma, address, pte);
-                       page_remove_rmap(page, vma);
+                       page_remove_rmap(page);
                        dec_mm_counter(mm, file_rss);
                        BUG_ON(pte_dirty(pteval));
                        pte_unmap_unlock(pte, ptl);
@@ -248,15 +248,16 @@ again:
                int err;
 
                /* maybe shared writable, allocate new block */
+               mutex_lock(&xip_sparse_mutex);
                error = mapping->a_ops->get_xip_mem(mapping, vmf->pgoff, 1,
                                                        &xip_mem, &xip_pfn);
+               mutex_unlock(&xip_sparse_mutex);
                if (error)
                        return VM_FAULT_SIGBUS;
                /* unmap sparse mappings at pgoff from all other vmas */
                __xip_unmap(mapping, vmf->pgoff);
 
 found:
-               printk("%s insert %lx@%lx\n", current->comm, (unsigned long)vmf->virtual_address, xip_pfn);
                err = vm_insert_mixed(vma, (unsigned long)vmf->virtual_address,
                                                        xip_pfn);
                if (err == -ENOMEM)
@@ -295,7 +296,7 @@ out:
        }
 }
 
-static struct vm_operations_struct xip_file_vm_ops = {
+static const struct vm_operations_struct xip_file_vm_ops = {
        .fault  = xip_file_fault,
 };
 
@@ -340,8 +341,10 @@ __xip_file_write(struct file *filp, const char __user *buf,
                                                &xip_mem, &xip_pfn);
                if (status == -ENODATA) {
                        /* we allocate a new page unmap it */
+                       mutex_lock(&xip_sparse_mutex);
                        status = a_ops->get_xip_mem(mapping, index, 1,
                                                        &xip_mem, &xip_pfn);
+                       mutex_unlock(&xip_sparse_mutex);
                        if (!status)
                                /* unmap page at pgoff from all other vmas */
                                __xip_unmap(mapping, index);