Merge branch 'topic/caiaq' into for-linus

[mirror_ubuntu-bionic-kernel.git] / fs / buffer.c

diff --git a/fs/buffer.c b/fs/buffer.c
index b3e5be7514f5ce366b2a87262489bc88e1835a59..49106127a4aa5f8f480dbd61968c0c6d0acd6b58 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -2397,7 +2397,8 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
        if ((page->mapping != inode->i_mapping) ||
            (page_offset(page) > size)) {
                /* page got truncated out from underneath us */
-               goto out_unlock;
+               unlock_page(page);
+               goto out;
        }
 
        /* page is wholly or partially inside EOF */
@@ -2411,14 +2412,15 @@ block_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf,
                ret = block_commit_write(page, 0, end);
 
        if (unlikely(ret)) {
+               unlock_page(page);
                if (ret == -ENOMEM)
                        ret = VM_FAULT_OOM;
                else /* -ENOSPC, -EIO, etc */
                        ret = VM_FAULT_SIGBUS;
-       }
+       } else
+               ret = VM_FAULT_LOCKED;
 
-out_unlock:
-       unlock_page(page);
+out:
        return ret;
 }
 
@@ -2734,6 +2736,8 @@ has_buffers:
                pos += blocksize;
        }
 
+       map_bh.b_size = blocksize;
+       map_bh.b_state = 0;
        err = get_block(inode, iblock, &map_bh, 0);
        if (err)
                goto unlock;