nfsd4: modify fi_delegations under recall_lock

Modify fi_delegations only under the recall_lock, allowing us to use
that list on lease breaks.

Also some trivial cleanup to simplify later changes.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index d978192838a3..8b6cd3cf4835 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -277,9 +277,9 @@ nfs4_close_delegation(struct nfs4_delegation *dp)
 static void
 unhash_delegation(struct nfs4_delegation *dp)
 {
-        list_del_init(&dp->dl_perfile);
         list_del_init(&dp->dl_perclnt);
         spin_lock(&recall_lock);
+        list_del_init(&dp->dl_perfile);
         list_del_init(&dp->dl_recall_lru);
         spin_unlock(&recall_lock);
         nfs4_close_delegation(dp);
@@ -2336,9 +2336,7 @@ static void nfsd_break_one_deleg(struct nfs4_delegation *dp)
          * it's safe to take a reference: */
         atomic_inc(&dp->dl_count);
 
-        spin_lock(&recall_lock);
         list_add_tail(&dp->dl_recall_lru, &del_recall_lru);
-        spin_unlock(&recall_lock);
 
         /* only place dl_time is set. protected by lock_flocks*/
         dp->dl_time = get_seconds();
@@ -2363,8 +2361,10 @@ static void nfsd_break_deleg_cb(struct file_lock *fl)
          */
         fl->fl_break_time = 0;
 
-        nfsd_break_one_deleg(dp);
+        spin_lock(&recall_lock);
         dp->dl_file->fi_had_conflict = true;
+        nfsd_break_one_deleg(dp);
+        spin_unlock(&recall_lock);
 }
 
 static