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Dan Carpenter <dan.carpenter@oracle.com> reported a smatch warning
for start_log_trans():
fs/btrfs/tree-log.c:178 start_log_trans()
warn: we tested 'root->log_root' before and it was 'false'
fs/btrfs/tree-log.c
147 if (root->log_root) {
We test "root->log_root" here.
...
Reason:
Condition of:
fs/btrfs/tree-log.c:178: if (!root->log_root) {
is not necessary after commit: 7237f1833
It caused a smatch warning, and no functionally error.
Fix:
Deleting above condition will make smatch shut up,
but a better way is to do cleanup for start_log_trans()
to remove duplicated code and make code more readable.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
34eb2a5249