| commit | c2234bf9dbc4db7b2f378c9ad0d59fd75f5793f0 | |
| author | Hugh Dickins <hughd@google.com> | |
| Tue, 22 Mar 2011 23:33:43 +0000 (22 16:33 -0700) | ||
| committer | Greg Kroah-Hartman <gregkh@suse.de> | |
| Sun, 27 Mar 2011 18:30:27 +0000 (27 11:30 -0700) | ||
| tree | 243facd19407b35f1eccfe8e69ab74136fa38528 | treesnapshot (tar.gz zip) |
| parent | 5b390b74fb12f9b4b740eb8afd7dfe8d4889c3bc | commitdiff |
shmem: let shared anonymous be nonlinear again
commit bee4c36a5cf5c9f63ce1d7372aa62045fbd16d47 upstream.
Up to 2.6.22, you could use remap_file_pages(2) on a tmpfs file or a
shared mapping of /dev/zero or a shared anonymous mapping. In 2.6.23 we
disabled it by default, but set VM_CAN_NONLINEAR to enable it on safe
mappings. We made sure to set it in shmem_mmap() for tmpfs files, but
missed it in shmem_zero_setup() for the others. Fix that at last.
Reported-by: Kenny Simpson <theonetruekenny@yahoo.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
commit bee4c36a5cf5c9f63ce1d7372aa62045fbd16d47 upstream.
Up to 2.6.22, you could use remap_file_pages(2) on a tmpfs file or a
shared mapping of /dev/zero or a shared anonymous mapping. In 2.6.23 we
disabled it by default, but set VM_CAN_NONLINEAR to enable it on safe
mappings. We made sure to set it in shmem_mmap() for tmpfs files, but
missed it in shmem_zero_setup() for the others. Fix that at last.
Reported-by: Kenny Simpson <theonetruekenny@yahoo.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| mm/shmem.c | diffblobblamehistory |