---

yaml --- r: 243151 b: refs/heads/master c: 695a0d0 h: refs/heads/master i: 243149: 3e5bf18 243147: 8f6c8d4 243143: 5c5fa7b 243135: 3134de0 v: v3
git-mirror · Mar 17, 2011 · e1e98f0 · e1e98f0
1 parent 2ac9cb4
commit e1e98f0
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 930f028abe39dfd0849b53131d19c4b67aacbe67
+refs/heads/master: 695a0d0da09e75c4475bbb303def159023ef72ca
diff --git a/trunk/fs/btrfs/inode.c b/trunk/fs/btrfs/inode.c
@@ -3557,6 +3557,12 @@ static int btrfs_truncate_page(struct address_space *mapping, loff_t from)
 	return ret;
 }
 
+/*
+ * This function puts in dummy file extents for the area we're creating a hole
+ * for.  So if we are truncating this file to a larger size we need to insert
+ * these file extents so that btrfs_get_extent will return a EXTENT_MAP_HOLE for
+ * the range between oldsize and size
+ */
 int btrfs_cont_expand(struct inode *inode, loff_t oldsize, loff_t size)
 {
 	struct btrfs_trans_handle *trans;