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[PATCH] NOMMU: Set BDI capabilities for /dev/mem and /dev/kmem

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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>
This commit is contained in:
David Howells 2006-09-27 01:50:16 -07:00 • committed by Linus Torvalds
parent 0ec76a110f
commit 5da6185bca
3 changed files with 61 additions and 0 deletions
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2
include/linux/cdev.h
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@ -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