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| author | David Howells <dhowells@redhat.com> | 2007-07-31 00:37:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-31 15:39:36 -0700 |
| commit | 2e92a3baee64112fd210a930276bad165b0bd576 (patch) | |
| tree | 00e9e59fe3fe4ce84d2fb00b134a02a9137acdc7 | |
| parent | 6a302358d87fedaf7bda12b8e909265ebf1ce674 (diff) | |
| download | linux-2e92a3baee64112fd210a930276bad165b0bd576.tar.gz linux-2e92a3baee64112fd210a930276bad165b0bd576.tar.bz2 linux-2e92a3baee64112fd210a930276bad165b0bd576.zip | |
NOMMU: Fix SYSV IPC SHM
Fix the SYSV IPC SHM to work with the changes applied by the new fault handler
patches when CONFIG_MMU=n.
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/ramfs/file-nommu.c | 7 | ||||
| -rw-r--r-- | ipc/shm.c | 2 |
2 files changed, 8 insertions, 1 deletions
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c index cad2b7ace630..237fe8b8e819 100644 --- a/fs/ramfs/file-nommu.c +++ b/fs/ramfs/file-nommu.c @@ -295,5 +295,10 @@ unsigned long ramfs_nommu_get_unmapped_area(struct file *file, */ int ramfs_nommu_mmap(struct file *file, struct vm_area_struct *vma) { - return vma->vm_flags & VM_SHARED ? 0 : -ENOSYS; + if (!(vma->vm_flags & VM_SHARED)) + return -ENOSYS; + + file_accessed(file); + vma->vm_ops = &generic_file_vm_ops; + return 0; } diff --git a/ipc/shm.c b/ipc/shm.c index d0259e3ad1c0..d88ac5a07ec7 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -268,7 +268,9 @@ static int shm_mmap(struct file * file, struct vm_area_struct * vma) if (ret != 0) return ret; sfd->vm_ops = vma->vm_ops; +#ifdef CONFIG_MMU BUG_ON(!sfd->vm_ops->fault); +#endif vma->vm_ops = &shm_vm_ops; shm_open(vma); |