Wang Shilong
2014-Mar-11 10:29 UTC
[PATCH 1/2] Btrfs-progs: mkfs: don't create extent for an empty file
Steps to reproduce:
# mkdir -p /tmp/test
# touch /tmp/test/file
# mkfs.btrfs -f /dev/sda13 -r /tmp/test
# btrfs check /dev/sda13
For an empty file, don't create extent data for it.
Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
---
mkfs.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/mkfs.c b/mkfs.c
index 2dc90c2..2f7dfef 100644
--- a/mkfs.c
+++ b/mkfs.c
@@ -619,6 +619,9 @@ static int add_file_items(struct btrfs_trans_handle *trans,
struct extent_buffer *eb = NULL;
int fd;
+ if (st->st_size == 0)
+ return 0;
+
fd = open(path_name, O_RDONLY);
if (fd == -1) {
fprintf(stderr, "%s open failed\n", path_name);
--
1.9.0
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs"
in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html