linux-next

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Fabio M. De Francesco 1d625960e4 binder: Use kmap_local_page() in binder_alloc_copy_user_to_buffer()

The use of kmap() is being deprecated in favor of kmap_local_page()
where it is feasible. With kmap_local_page(), the mapping is per
thread, CPU local and not globally visible.

binder_alloc_copy_user_to_buffer() is a function where the use of
kmap_local_page() in place of kmap() is correctly suited because
the mapping is local to the thread.

Therefore, use kmap_local_page() / kunmap_local().

Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Link: https://lore.kernel.org/r/20220425175754.8180-3-fmdefrancesco@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-04-26 12:51:31 +02:00

binder_alloc_selftest.c

binder: print warnings when detecting oneway spamming.

2020-09-03 18:24:41 +02:00

binder_alloc.c

binder: Use kmap_local_page() in binder_alloc_copy_user_to_buffer()

2022-04-26 12:51:31 +02:00

binder_alloc.h

binder: tell userspace to dump current backtrace when detected oneway spamming

2021-04-10 10:52:04 +02:00

binder_internal.h

binder: hold fd_install until allocating fds first