Commit 4740b830 authored Jul 26, 2011 by Yongqiang Yang Committed by Theodore Ts'o Jul 26, 2011

ext4: let ext4_group_add_blocks() handle 0 blocks quickly



If ext4_group_add_blocks() is called with 0 block, make it return 0
without doing any extra work.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

parent cc7365df

fs/ext4/mballoc.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -4691,6 +4691,9 @@ 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