tree bea9af22a98ea2988a38f5e9fc2467ccbbf3ae70
parent a020ff412f0ecbb1e4aae1681b287e5785dd77b5
author Linus Torvalds <torvalds@g5.osdl.org> 1136420440 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> 1136420440 -0800

Relax the rw_verify_area() error checking.

In particular, allow over-large read- or write-requests to be downgraded
to a more reasonable range, rather than considering them outright errors.

We want to protect lower layers from (the sadly all too common) overflow
conditions, but prefer to do so by chopping the requests up, rather than
just refusing them outright.

Cc: Peter Anvin <hpa@zytor.com>
Cc: Ulrich Drepper <drepper@redhat.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Al Viro <viro@ftp.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>