Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux

Pull nfsd bugfixes from Bruce Fields:
 "Just three minor bugfixes"

* 'for-3.11' of git://linux-nfs.org/~bfields/linux:
  svcrdma: underflow issue in decode_write_list()
  nfsd4: fix minorversion support interface
  lockd: protect nlm_blocked access in nlmsvc_retry_blocked

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/lockd/svclock.c b/fs/lockd/svclock.c
index 067778b0ccc9..e066a3902973 100644
--- a/fs/lockd/svclock.c
+++ b/fs/lockd/svclock.c
@@ -951,6 +951,7 @@ nlmsvc_retry_blocked(void)
         unsigned long   timeout = MAX_SCHEDULE_TIMEOUT;
         struct nlm_block *block;
 
+        spin_lock(&nlm_blocked_lock);
         while (!list_empty(&nlm_blocked) && !kthread_should_stop()) {
                 block = list_entry(nlm_blocked.next, struct nlm_block, b_list);
 
@@ -960,6 +961,7 @@ nlmsvc_retry_blocked(void)
                         timeout = block->b_when - jiffies;
                         break;
                 }
+                spin_unlock(&nlm_blocked_lock);
 
                 dprintk("nlmsvc_retry_blocked(%p, when=%ld)\n",
                         block, block->b_when);
@@ -969,7 +971,9 @@ nlmsvc_retry_blocked(void)
                         retry_deferred_block(block);
                 } else
                         nlmsvc_grant_blocked(block);
+                spin_lock(&nlm_blocked_lock);
         }
+        spin_unlock(&nlm_blocked_lock);
 
         return timeout;
 }