1 files changed, 2 insertions, 4 deletions

diff --git a/mm/filemap.c b/mm/filemap.c
index e5131392d32e..68e782b3d3de 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1559,8 +1559,7 @@ static void do_sync_mmap_readahead(struct vm_area_struct *vma,
         if (!ra->ra_pages)
                 return;
 
-        if (VM_SequentialReadHint(vma) ||
-                        offset - 1 == (ra->prev_pos >> PAGE_CACHE_SHIFT)) {
+        if (VM_SequentialReadHint(vma)) {
                 page_cache_sync_readahead(mapping, ra, file, offset,
                                           ra->ra_pages);
                 return;
@@ -1583,7 +1582,7 @@ static void do_sync_mmap_readahead(struct vm_area_struct *vma,
         ra_pages = max_sane_readahead(ra->ra_pages);
         ra->start = max_t(long, 0, offset - ra_pages / 2);
         ra->size = ra_pages;
-        ra->async_size = 0;
+        ra->async_size = ra_pages / 4;
         ra_submit(ra, mapping, file);
 }
 
@@ -1689,7 +1688,6 @@ retry_find:
                 return VM_FAULT_SIGBUS;
         }
 
-        ra->prev_pos = (loff_t)offset << PAGE_CACHE_SHIFT;
         vmf->page = page;
         return ret | VM_FAULT_LOCKED;