Commit 8ace5dfb authored by Geliang Tang's avatar Geliang Tang Committed by Jeff Layton
Browse files

locks: use list_first_entry_or_null() 



Simplify the code with list_first_entry_or_null().

Signed-off-by: default avatarGeliang Tang <geliangtang@163.com>
Signed-off-by: default avatarJeff Layton <jeff.layton@primarydata.com>
parent 95ace754

fs/locks.c

+4 −6
Original line number Diff line number Diff line
@@ -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,

		fl = list_first_entry_or_null(&ctx->flc_lease,

					      struct file_lock, fl_list);

			if (fl->fl_type == F_WRLCK)

		if (fl && (fl->fl_type == F_WRLCK))

			has_lease = true;

		}

		spin_unlock(&ctx->flc_lock);

	}