Re: [PATCH v4] livepatch: Cleanup module page permission changes

[Jiri Kosina]

On Thu, 3 Dec 2015, Josh Poimboeuf wrote:

> Calling set_memory_rw() and set_memory_ro() for every iteration of the
> loop in klp_write_object_relocations() is messy, inefficient, and
> error-prone.
> 
> Change all the read-only pages to read-write before the loop and convert
> them back to read-only again afterwards.
> 
> Suggested-by: Miroslav Benes <mbenes@xxxxxxx>
> Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
> ---
> Based on the following branches:
> - git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching.git for-4.5/core
> - git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux.git modules-next
> 
> - v4: rebase onto Chris's sympos changes
> - v3: use new module_{disable,enable}_ro() functions (in linux-next)

Merged together with patches from Rusty's modules-next and applied to 
for-4.5/core. Thanks,

-- 
Jiri Kosina
SUSE Labs

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