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author | David Howells <dhowells@redhat.com> | 2006-01-06 00:11:42 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 08:33:32 -0800 |
commit | b0e15190ead07056ab0c3844a499ff35e66d27cc (patch) | |
tree | 0601a8d68fa051a7ee85d22640e982c0a64f0efc /mm/nommu.c | |
parent | 642fb4d1f1dd2417aa69189fe5ceb81e4fb72900 (diff) | |
download | linux-b0e15190ead07056ab0c3844a499ff35e66d27cc.tar.gz linux-b0e15190ead07056ab0c3844a499ff35e66d27cc.tar.bz2 linux-b0e15190ead07056ab0c3844a499ff35e66d27cc.zip |
[PATCH] NOMMU: Make SYSV IPC SHM use ramfs facilities on NOMMU
The attached patch makes the SYSV IPC shared memory facilities use the new
ramfs facilities on a no-MMU kernel.
The following changes are made:
(1) There are now shmem_mmap() and shmem_get_unmapped_area() functions to
allow the IPC SHM facilities to commune with the tiny-shmem and shmem
code.
(2) ramfs files now need resizing using do_truncate() rather than by modifying
the inode size directly (see shmem_file_setup()). This causes ramfs to
attempt to bind a block of pages of sufficient size to the inode.
(3) CONFIG_SYSVIPC is no longer contingent on CONFIG_MMU.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'mm/nommu.c')
-rw-r--r-- | mm/nommu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index c1196812876b..c10262d68232 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1177,3 +1177,10 @@ int in_gate_area_no_task(unsigned long addr) { return 0; } + +struct page *filemap_nopage(struct vm_area_struct *area, + unsigned long address, int *type) +{ + BUG(); + return NULL; +} |