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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2013-02-20 13:59:26 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-02-28 09:37:07 +0100 |
| commit | d7b788cd06a3080ebf0b2f5f2e008d4fda2b336e (patch) | |
| tree | 69441ca08ebf084277bc3d944bdde8d0ccdb8ecb /arch/s390/lib/uaccess_std.c | |
| parent | ea4da6eae393dbbb26800700a38cf1b32c9109fd (diff) | |
| download | linux-d7b788cd06a3080ebf0b2f5f2e008d4fda2b336e.tar.bz2 | |
s390/uaccess: shorten strncpy_from_user/strnlen_user
Always stay within page boundaries when copying from user within
strlen_user_mvcos()/strncpy_from_user_mvcos(). This allows to
shorten the code a bit and may prevent unnecessary faults, since
we copy quite large amounts of memory to kernel space.
Also directly call the mvcos variants of copy_from_user() to
avoid indirect branches.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/lib/uaccess_std.c')
0 files changed, 0 insertions, 0 deletions