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| author |   Sunil Mushran <Sunil.Mushran@oracle.com> | 2006-12-05 17:56:35 -0800 |
|---|---|---|
| committer |   Mark Fasheh <mark.fasheh@oracle.com> | 2006-12-07 17:37:53 -0800 |
| commit | c271c5c22b0a7ca45fda15f1f4d258bca36a5b94 (patch) | |
| tree | 9803af515ecf1c101c4a5921d7407c66184147e1 /fs/ocfs2/mmap.c | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 (diff) | |
| download | linux-dev-c271c5c22b0a7ca45fda15f1f4d258bca36a5b94.tar.xz linux-dev-c271c5c22b0a7ca45fda15f1f4d258bca36a5b94.zip | |
ocfs2: local mounts
This allows users to format an ocfs2 file system with a special flag,
OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT. When the file system sees this flag, it
will not use any cluster services, nor will it require a cluster
configuration, thus acting like a 'local' file system.
Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Diffstat (limited to 'fs/ocfs2/mmap.c')
| -rw-r--r-- | fs/ocfs2/mmap.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index 69f85ae392dc..51b020447683 100644 --- a/fs/ocfs2/mmap.c +++ b/fs/ocfs2/mmap.c @@ -83,10 +83,12 @@ static struct vm_operations_struct ocfs2_file_vm_ops = { int ocfs2_mmap(struct file *file, struct vm_area_struct *vma) { int ret = 0, lock_level = 0; + struct ocfs2_super *osb = OCFS2_SB(file->f_dentry->d_inode->i_sb); /* We don't want to support shared writable mappings yet. */ - if (((vma->vm_flags & VM_SHARED) || (vma->vm_flags & VM_MAYSHARE)) - && ((vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_MAYWRITE))) { + if (!ocfs2_mount_local(osb) && + ((vma->vm_flags & VM_SHARED) || (vma->vm_flags & VM_MAYSHARE)) && + ((vma->vm_flags & VM_WRITE) || (vma->vm_flags & VM_MAYWRITE))) { mlog(0, "disallow shared writable mmaps %lx\n", vma->vm_flags); /* This is -EINVAL because generic_file_readonly_mmap * returns it in a similar situation. */ |