diff --git a/fs/aio.c b/fs/aio.c index 250b0a73c8a8ca92b78c3a0282d2425ce7649dcf..9e319a04780ee29b388d101d34e915de96624177 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1543,7 +1543,20 @@ 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 igrab must always just + * bump the count and move on. + */ + atomic_inc(&mapping->host->i_count); abe->mapping = mapping; hlist_add_head(&abe->list, &batch_hash[bucket]); return;