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Von: "Christoph Hellwig" hch@infradead.org
Refactor ubi_eba_read_leb_sg() to use kmap_atomic() for sg list access. Since kmap_atomic() disables preempt a bounce buffer is needed. kmap_local_page() is not used to allow easy backporting of this patch to older kernels.
The followup patches in this series will switch to kmap_sg() and we can remove our own helper and the bounce buffer.
Please just use kmap_local and avoid the bounce buffering.
Patch 6 does this.
Thanks, //richard