xps: Transmit Packet Steering

[net-next-2.6.git] / fs / aio.c

diff --git a/fs/aio.c b/fs/aio.c
index 250b0a73c8a8ca92b78c3a0282d2425ce7649dcf..8c8f6c5b6d7930657f7a3aadf44fe4b4dc96b738 100644 (file)
--- 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;