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authorRusty Russell <rusty@rustcorp.com.au>2007-10-22 11:24:24 +1000
committerRusty Russell <rusty@rustcorp.com.au>2007-10-23 15:49:56 +1000
commit2d37f94a28170ca656438758fca577acb49a7932 (patch)
tree21049219a98d314a2c442293e512b74d879e6270 /mm/tiny-shmem.c
parent56ae43dfe233323683248a5c553bad7160db2fa5 (diff)
downloadlinux-2d37f94a28170ca656438758fca577acb49a7932.tar.gz
generalize lgread_u32/lgwrite_u32.
Jes complains that page table code still uses lgread_u32 even though
it now uses general kernel pte types.  The best thing to do is to
generalize lgread_u32 and lgwrite_u32.

This means we lose the efficiency of getuser().  We could potentially
regain it if we used __copy_from_user instead of copy_from_user, but
I'm not certain that our range check is equivalent to access_ok() on
all platforms.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Jes Sorensen <jes@sgi.com>
Diffstat (limited to 'mm/tiny-shmem.c')
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