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@xxxxxxxxx> 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@xxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> Cc: Greg Ungerer <gerg@xxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- 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@xxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html