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| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 10:29:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-27 10:29:56 -0700 |
| commit | ea6db58f3ea55f413c882095d2afaea8137f4f8c (patch) | |
| tree | 9f7509b5dfe0fdd422b3e2b3a98ed8321d796c66 /fs/ocfs2/mmap.c | |
| parent | c58b8e4a25a1ba347a0e5d21984c97bd296f1691 (diff) | |
| parent | 83418978827324918a8cd25ce5227312de1d4468 (diff) | |
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (27 commits)
ocfs2: Cache extent records
ocfs2: Remember rw lock level during direct io
ocfs2: Fix up i_blocks calculation to know about holes
ocfs2: Fix extent lookup to return true size of holes
ocfs2: Read from an unwritten extent returns zeros
ocfs2: make room for unwritten extents flag
ocfs2: Use own splice write actor
ocfs2: Use do_sync_mapping_range() in ocfs2_zero_tail_for_truncate()
[PATCH] Turn do_sync_file_range() into do_sync_mapping_range()
ocfs2: zero tail of sparse files on truncate
ocfs2: Teach ocfs2_get_block() about holes
ocfs2: remove ocfs2_prepare_write() and ocfs2_commit_write()
ocfs2: teach ocfs2_file_aio_write() about sparse files
ocfs2: Turn off shared writeable mmap for local files systems with holes.
ocfs2: abstract out allocation locking
ocfs2: teach extend/truncate about sparse files
ocfs2: temporarily remove extent map caching
ocfs2: sparse b-tree support
ocfs2: small cleanup of ocfs2_request_delete()
ocfs2: remove unused code
...
Diffstat (limited to 'fs/ocfs2/mmap.c')
| -rw-r--r-- | fs/ocfs2/mmap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c index 51b02044768..af01158b39f 100644 --- a/fs/ocfs2/mmap.c +++ b/fs/ocfs2/mmap.c @@ -85,8 +85,11 @@ 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 (!ocfs2_mount_local(osb) && + /* + * Only support shared writeable mmap for local mounts which + * don't know about holes. + */ + if ((!ocfs2_mount_local(osb) || ocfs2_sparse_alloc(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); |