---

yaml --- r: 47853 b: refs/heads/master c: 549054a h: refs/heads/master i: 47851: 6cfcf66 v: v3
git-mirror · Feb 10, 2007 · 2c4157a · 2c4157a
1 parent 2a02b31
commit 2c4157a
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Showing 2 changed files with 10 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5478eead8528f6cb5ebe3015fb88b68b175e1093
+refs/heads/master: 549054afadae44889c0b40d4c3bfb0207b98d5a0
diff --git a/trunk/fs/xfs/linux-2.6/xfs_aops.c b/trunk/fs/xfs/linux-2.6/xfs_aops.c
@@ -1283,13 +1283,18 @@ __xfs_get_blocks(
 	bh_result->b_bdev = iomap.iomap_target->bt_bdev;
 
 	/*
-	 * If we previously allocated a block out beyond eof and we are
-	 * now coming back to use it then we will need to flag it as new
-	 * even if it has a disk address.
+	 * If we previously allocated a block out beyond eof and we are now
+	 * coming back to use it then we will need to flag it as new even if it
+	 * has a disk address.
+	 *
+	 * With sub-block writes into unwritten extents we also need to mark
+	 * the buffer as new so that the unwritten parts of the buffer gets
+	 * correctly zeroed.
 	 */
 	if (create &&
 	    ((!buffer_mapped(bh_result) && !buffer_uptodate(bh_result)) ||
-	     (offset >= i_size_read(inode)) || (iomap.iomap_flags & IOMAP_NEW)))
+	     (offset >= i_size_read(inode)) ||
+	     (iomap.iomap_flags & (IOMAP_NEW|IOMAP_UNWRITTEN))))
 		set_buffer_new(bh_result);
 
 	if (iomap.iomap_flags & IOMAP_DELAY) {