From 4740b830ed5720ade6c780dbf3fdfe9089b3552d Mon Sep 17 00:00:00 2001 From: Yongqiang Yang Date: Tue, 26 Jul 2011 21:51:08 -0400 Subject: 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 Signed-off-by: "Theodore Ts'o" --- fs/ext4/mballoc.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'fs/ext4') diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index dbe4295..b6ef4da39 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -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 -- cgit v1.1