| commit | bb521c5de070b86a1e049e2dbf62328f717ff1e8 | |
| author | Nikanth Karthikesan <knikanth@suse.de> | |
| Wed, 23 Sep 2009 22:57:09 +0000 (23 15:57 -0700) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Thu, 24 Sep 2009 14:21:03 +0000 (24 07:21 -0700) | ||
| tree | e2a4416f35e84873f75c0e86ebae5552cf4ae2b2 | treesnapshot (tar.gz zip) |
| parent | 0b8c78f2bfa6ebed0f47794b5995a0d4b3fe456d | commitdiff |
/dev/zero: avoid repeated access_ok() checks
In read_zero, we check for access_ok() once for the count bytes. It is
unnecessarily checked again in clear_user. Use __clear_user, which does
not check for access_ok().
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In read_zero, we check for access_ok() once for the count bytes. It is
unnecessarily checked again in clear_user. Use __clear_user, which does
not check for access_ok().
Signed-off-by: Nikanth Karthikesan <knikanth@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| drivers/char/mem.c | diffblobblamehistory |