Re: [PATCH] fs: Call kmap_local_page() in copy_string_kernel()

On venerdì 22 luglio 2022 02:14:20 CEST Ira Weiny wrote: > On Sun, Jul 10, 2022 at 12:01:36PM +0200, Fabio M. De Francesco wrote: > > The use of kmap_atomic() is being deprecated in favor of kmap_local_page(). > > > > With kmap_local_page(), the mappings are per thread, CPU local, not > > globall

Re: [PATCH] fs: Call kmap_local_page() in copy_string_kernel()

On Sun, Jul 10, 2022 at 12:01:36PM +0200, Fabio M. De Francesco wrote: > The use of kmap_atomic() is being deprecated in favor of kmap_local_page(). > > With kmap_local_page(), the mappings are per thread, CPU local, not > globally visible and can take page faults. Furthermore, the mappings can be

[PATCH] fs: Call kmap_local_page() in copy_string_kernel()

The use of kmap_atomic() is being deprecated in favor of kmap_local_page(). With kmap_local_page(), the mappings are per thread, CPU local, not globally visible and can take page faults. Furthermore, the mappings can be acquired from any context (including interrupts). Therefore, use kmap_local_p