diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 6 |
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; |