2 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt
index fd24f34f120..6bf85b78cfe 100644
--- a/Documentation/filesystems/vfs.txt
+++ b/Documentation/filesystems/vfs.txt
@@ -317,6 +317,12 @@ or bottom half).
         the VM is trying to reclaim under GFP_NOFS conditions, hence this
         method does not need to handle that situation itself.
 
+        Implementations must include conditional reschedule calls inside any
+        scanning loop that is done. This allows the VFS to determine
+        appropriate scan batch sizes without having to worry about whether
+        implementations will cause holdoff problems due to large scan batch
+        sizes.
+
 Whoever sets up the inode is responsible for filling in the "i_op" field. This
 is a pointer to a "struct inode_operations" which describes the methods that
 can be performed on individual inodes.
diff --git a/fs/super.c b/fs/super.c
index 5101f054496..7943f04cb3a 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -182,6 +182,7 @@ static struct super_block *alloc_super(struct file_system_type *type)
 
                 s->s_shrink.seeks = DEFAULT_SEEKS;
                 s->s_shrink.shrink = prune_super;
+                s->s_shrink.batch = 1024;
         }
 out:
         return s;