[PATCH 06/12] ext4: let ext4_group_add_blocks() handle 0 blocks quickly
From: Yongqiang Yang <hidden>
Date: 2011-07-18 02:56:57
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
If ext4_group_add_blocks() is called with 0 block, it just return 0. Signed-off-by: Yongqiang Yang <redacted> --- fs/ext4/mballoc.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 33c41e6..a2af35b 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c@@ -4680,6 +4680,9 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb, ext4_debug("Adding block(s) %llu-%llu\n", block, block + count - 1); + if (count == 0) + return 0; + ext4_get_group_no_and_offset(sb, block, &block_group, &bit); /* * Check to see if we are freeing blocks across a group
--
1.7.5.1