diff options
| author | David Howells <dhowells@redhat.com> | 2006-01-06 09:11:42 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-06 17:33:32 +0100 |
| commit | b0e15190ead07056ab0c3844a499ff35e66d27cc (patch) | |
| tree | 0601a8d68fa051a7ee85d22640e982c0a64f0efc /mm/shmem.c | |
| parent | [PATCH] NOMMU: Provide shared-writable mmap support on ramfs (diff) | |
| download | linux-b0e15190ead07056ab0c3844a499ff35e66d27cc.tar.xz 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/shmem.c')
| -rw-r--r-- | mm/shmem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 65c148efa2ed..a1f2f02af724 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1270,7 +1270,7 @@ out_nomem: return retval; } -static int shmem_mmap(struct file *file, struct vm_area_struct *vma) +int shmem_mmap(struct file *file, struct vm_area_struct *vma) { file_accessed(file); vma->vm_ops = &shmem_vm_ops; |