[merged] fs-ramfs-file-nommu-add-setpageuptodate.patch removed from -mm tree

[merged] fs-ramfs-file-nommu-add-setpageuptodate.patch removed from -mm tree

[akpm]

The patch titled
     Subject: fs: ramfs: file-nommu: add SetPageUptodate()
has been removed from the -mm tree.  Its filename was
     fs-ramfs-file-nommu-add-setpageuptodate.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Bob Liu <lliubbo@gmail.com>
Subject: fs: ramfs: file-nommu: add SetPageUptodate()

There is a bug in the below scenario for !CONFIG_MMU:

1. create a new file
2. mmap the file and write to it
3. read the file can't get the correct value

Because
sys_read() > generic_file_aio_read() > simple_readpage() > clear_page()
which make the page be zeroed.

Add SetPageUptodate() to ramfs_nommu_expand_for_mapping() so that
generic_file_aio_read() do not call simple_readpage().

Signed-off-by: Bob Liu <lliubbo@gmail.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@uclinux.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/ramfs/file-nommu.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN fs/ramfs/file-nommu.c~fs-ramfs-file-nommu-add-setpageuptodate fs/ramfs/file-nommu.c
--- a/fs/ramfs/file-nommu.c~fs-ramfs-file-nommu-add-setpageuptodate
+++ a/fs/ramfs/file-nommu.c
@@ -110,6 +110,7 @@ int ramfs_nommu_expand_for_mapping(struc
 
 		/* prevent the page from being discarded on memory pressure */
 		SetPageDirty(page);
+		SetPageUptodate(page);
 
 		unlock_page(page);
 		put_page(page);
_

Patches currently in -mm which might be from lliubbo@gmail.com are

origin.patch