[RFC 3/5] xfs: allow fs freeze on suspend/hibernation

[Luis R. Rodriguez]

This also removes the freezer calls on the XFS kthread as they are
no longer needed.

Signed-off-by: Luis R. Rodriguez <mcg...@kernel.org>
---
 fs/xfs/xfs_super.c     | 3 ++-
 fs/xfs/xfs_trans_ail.c | 7 ++-----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 64013b2db8e0..75c3415657eb 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1775,7 +1775,8 @@ static struct file_system_type xfs_fs_type = {
        .name                   = "xfs",
        .mount                  = xfs_fs_mount,
        .kill_sb                = kill_block_super,
-       .fs_flags               = FS_REQUIRES_DEV,
+       .fs_flags               = FS_REQUIRES_DEV |
+                                 FS_FREEZE_ON_SUSPEND,
 };
 MODULE_ALIAS_FS("xfs");
 
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index 354368a906e5..8cebda88e91a 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -512,7 +512,6 @@ xfsaild(
        long            tout = 0;       /* milliseconds */
 
        current->flags |= PF_MEMALLOC;
-       set_freezable();
 
        while (!kthread_should_stop()) {
                if (tout && tout <= 20)
@@ -535,19 +534,17 @@ xfsaild(
                if (!xfs_ail_min(ailp) &&
                    ailp->xa_target == ailp->xa_target_prev) {
                        spin_unlock(&ailp->xa_lock);
-                       freezable_schedule();
+                       schedule();
                        tout = 0;
                        continue;
                }
                spin_unlock(&ailp->xa_lock);
 
                if (tout)
-                       freezable_schedule_timeout(msecs_to_jiffies(tout));
+                       schedule_timeout(msecs_to_jiffies(tout));
 
                __set_current_state(TASK_RUNNING);
 
-               try_to_freeze();
-
                tout = xfsaild_push(ailp);
        }
 
-- 
2.14.0