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authorJaegeuk Kim <jaegeuk.kim@samsung.com>2013-01-21 12:34:21 +0400
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-01-22 05:48:59 +0400
commit9af45ef5ab8ce4a13c553200dc15509441fbd68f (patch)
tree7a1d76bb6d1d87ab0a3eace1311446666ec01c18 /fs/f2fs
parenta7fdffbd3ea4b3cc2993af006bde38a423b38b72 (diff)
downloadlinux-9af45ef5ab8ce4a13c553200dc15509441fbd68f.tar.xz
f2fs: add comments of start_bidx_of_node
The caller of start_bidx_of_node() should give proper node offsets which point only direct node blocks. Otherwise, it is a caller's bug. This patch adds comments to make it clear. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/gc.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index 809cfec6683c..c386910dacc5 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -424,7 +424,11 @@ next_step:
}
/*
- * Calculate start block index that this node page contains
+ * Calculate start block index indicating the given node offset.
+ * Be careful, caller should give this node offset only indicating direct node
+ * blocks. If any node offsets, which point the other types of node blocks such
+ * as indirect or double indirect node blocks, are given, it must be a caller's
+ * bug.
*/
block_t start_bidx_of_node(unsigned int node_ofs)
{