From 624d0f1dd7c80d2bac4fc3066b2ff3947f890883 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 25 Nov 2014 11:53:47 -0500 Subject: ext4: cleanup flag definitions for extent status tree Currently flags for extent status tree are defined twice, once shifted and once without a being shifted. Consolidate these definitions into one place and make some computations automatic to make adding flags less error prone. Compiler should be clever enough to figure out these are constants and generate the same code. Signed-off-by: Jan Kara Signed-off-by: Theodore Ts'o --- fs/ext4/extents_status.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/ext4/extents_status.c') diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 8f2aac4006d2..30596498ed0b 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -1174,6 +1174,8 @@ int ext4_es_register_shrinker(struct ext4_sb_info *sbi) { int err; + /* Make sure we have enough bits for physical block number */ + BUILD_BUG_ON(ES_SHIFT < 48); INIT_LIST_HEAD(&sbi->s_es_list); sbi->s_es_nr_inode = 0; spin_lock_init(&sbi->s_es_lock); -- cgit v1.2.3