locks: use list_first_entry_or_null()

Simplify the code with list_first_entry_or_null().

Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/fs/locks.c b/fs/locks.c
index 86c94674ab22..d2ee8e365ba7 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1505,12 +1505,10 @@ void lease_get_mtime(struct inode *inode, struct timespec *time)
         ctx = smp_load_acquire(&inode->i_flctx);
         if (ctx && !list_empty_careful(&ctx->flc_lease)) {
                 spin_lock(&ctx->flc_lock);
-                if (!list_empty(&ctx->flc_lease)) {
-                        fl = list_first_entry(&ctx->flc_lease,
-                                                struct file_lock, fl_list);
-                        if (fl->fl_type == F_WRLCK)
-                                has_lease = true;
-                }
+                fl = list_first_entry_or_null(&ctx->flc_lease,
+                                              struct file_lock, fl_list);
+                if (fl && (fl->fl_type == F_WRLCK))
+                        has_lease = true;
                 spin_unlock(&ctx->flc_lock);
         }