Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[linux-2.6-omap-h63xx.git] / mm / filemap_xip.c

diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 5b9ec47ea25af16e9182ffbee7237b335416dcf8..b5167dfb2f2d65366004963558dfa765643423b8 100644 (file)
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -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)
@@ -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);