sparsemem: on no vmemmap path put mem_map on node high too

[safe/jmp/linux-2.6] / mm / readahead.c

diff --git a/mm/readahead.c b/mm/readahead.c
index 033bc13..dfa9a1a 100644 (file)
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/fs.h>
+#include <linux/gfp.h>
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/blkdev.h>
@@ -501,6 +502,12 @@ void page_cache_sync_readahead(struct address_space *mapping,
        if (!ra->ra_pages)
                return;
 
+       /* be dumb */
+       if (filp && (filp->f_mode & FMODE_RANDOM)) {
+               force_page_cache_readahead(mapping, filp, offset, req_size);
+               return;
+       }
+
        /* do read-ahead */
        ondemand_readahead(mapping, ra, filp, false, offset, req_size);
 }