[PATCH] mm: make filemap_nopage use NOPAGE_SIGBUS

Don't open-code NOPAGE_SIGBUS.

Signed-off-by: Adam Litke <agl@us.ibm.com>
Acked-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/mm/filemap.c b/mm/filemap.c
index afcdc72..3277f3b 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1471,7 +1471,7 @@ outside_data_content:
         * accessible..
         */
        if (area->vm_mm == current->mm)
-               return NULL;
+               return NOPAGE_SIGBUS;
        /* Fall through to the non-read-ahead case */
 no_cached_page:
        /*
@@ -1496,7 +1496,7 @@ no_cached_page:
         */
        if (error == -ENOMEM)
                return NOPAGE_OOM;
-       return NULL;
+       return NOPAGE_SIGBUS;
 
 page_not_uptodate:
        if (!did_readaround) {
@@ -1565,7 +1565,7 @@ page_not_uptodate:
         */
        shrink_readahead_size_eio(file, ra);
        page_cache_release(page);
-       return NULL;
+       return NOPAGE_SIGBUS;
 }
 EXPORT_SYMBOL(filemap_nopage);