Merge branch 'for-usb-linus' of git+ssh://master.kernel.org/pub/scm/linux/kernel...

[pandora-kernel.git] / include / linux / buffer_head.h

diff --git a/include/linux/buffer_head.h b/include/linux/buffer_head.h
index f5df235..503c8a6 100644 (file)
--- a/include/linux/buffer_head.h
+++ b/include/linux/buffer_head.h
@@ -217,8 +217,24 @@ int cont_write_begin(struct file *, struct address_space *, loff_t,
                        get_block_t *, loff_t *);
 int generic_cont_expand_simple(struct inode *inode, loff_t size);
 int block_commit_write(struct page *page, unsigned from, unsigned to);
+int __block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
+                               get_block_t get_block);
 int block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
                                get_block_t get_block);
+/* Convert errno to return value from ->page_mkwrite() call */
+static inline int block_page_mkwrite_return(int err)
+{
+       if (err == 0)
+               return VM_FAULT_LOCKED;
+       if (err == -EFAULT)
+               return VM_FAULT_NOPAGE;
+       if (err == -ENOMEM)
+               return VM_FAULT_OOM;
+       if (err == -EAGAIN)
+               return VM_FAULT_RETRY;
+       /* -ENOSPC, -EDQUOT, -EIO ... */
+       return VM_FAULT_SIGBUS;
+}
 sector_t generic_block_bmap(struct address_space *, sector_t, get_block_t *);
 int block_truncate_page(struct address_space *, loff_t, get_block_t *);
 int nobh_write_begin(struct address_space *, loff_t, unsigned, unsigned,