1 files changed, 13 insertions, 1 deletions

diff --git a/fs/aio.c b/fs/aio.c
index 250b0a73c8a8..8c8f6c5b6d79 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1543,7 +1543,19 @@ static void aio_batch_add(struct address_space *mapping,
         }
 
         abe = mempool_alloc(abe_pool, GFP_KERNEL);
-        BUG_ON(!igrab(mapping->host));
+
+        /*
+         * we should be using igrab here, but
+         * we don't want to hammer on the global
+         * inode spinlock just to take an extra
+         * reference on a file that we must already
+         * have a reference to.
+         *
+         * When we're called, we always have a reference
+         * on the file, so we must always have a reference
+         * on the inode, so ihold() is safe here.
+         */
+        ihold(mapping->host);
         abe->mapping = mapping;
         hlist_add_head(&abe->list, &batch_hash[bucket]);
         return;