[PATCH 11/14] get_unmapped_area handles MAP_FIXED on ramfs (nommu)

Benjamin Herrenschmidt
2007-04-04T04:03:12Z

fs/ramfs/file-nommu.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

Index: linux-cell/fs/ramfs/file-nommu.c
===================================================================
--- linux-cell.orig/fs/ramfs/file-nommu.c 2007-03-22 16:18:27.000000000 +1100
+++ linux-cell/fs/ramfs/file-nommu.c 2007-03-22 16:20:14.000000000 +1100
@@ -238,7 +238,10 @@ unsigned long ramfs_nommu_get_unmapped_a
struct page **pages = NULL, **ptr, *page;
loff_t isize;

- if (!(flags & MAP_SHARED))
+ /* Deal with MAP_FIXED differently ? Forbid it ? Need help from some nommu
+ * folks there... --BenH.
+ */
+ if ((flags & MAP_FIXED) || !(flags & MAP_SHARED))
return addr;

/* the mapping mustn't extend beyond the EOF */