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authorDavid Howells <dhowells@redhat.com>2006-09-27 01:50:16 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-27 08:26:14 -0700
commit5da6185bca064e35aa73a7c1f27488d2b96434f4 (patch)
treeb854ad2105e177d4b4ec4bb6a5ac26d41ebe368f /include/linux/cdev.h
parent0ec76a110f432e98277e464b82ace8dd66571689 (diff)
[PATCH] NOMMU: Set BDI capabilities for /dev/mem and /dev/kmem
Set the backing device info capabilities for /dev/mem and /dev/kmem to permit direct sharing under no-MMU conditions and full mapping capabilities under MMU conditions. Make the BDI used by these available to all directly mappable character devices. Also comment the capabilities for /dev/zero. [akpm@osdl.org: ifdef reductions] 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 'include/linux/cdev.h')
-rw-r--r--include/linux/cdev.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/cdev.h b/include/linux/cdev.h
index 2216638962d..ee5f53f2ca1 100644
--- a/include/linux/cdev.h
+++ b/include/linux/cdev.h
@@ -23,5 +23,7 @@ void cdev_del(struct cdev *);
void cd_forget(struct inode *);
+extern struct backing_dev_info directly_mappable_cdev_bdi;
+
#endif
#endif