Messages in this thread | | | Date | Fri, 21 Oct 2016 06:24:00 -0700 | From | Christoph Hellwig <> | Subject | Re: [PATCH 01/26] fscrypto: Add buffer operations |
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On Fri, Oct 21, 2016 at 03:17:03PM +0200, Richard Weinberger wrote: > UBIFS works on kmalloc()'ed buffers where it constructs the NAND/NOR pages > which will be written to the MTD. JFFS2 does the same.
Yes, you can trivially do a virt_to_page on a kmalloc buffer.
> Another reason why I did the buffer functions is because fscrypt_encrypt_page() > always allocates a bounce page as temporary memory. For ext4 this is needed, > for UBIFS not. > UBIFS has already a construction buffer, especially since it also does compression.
We should defintively find a way to avoid that, but it's a separate issue from adding another API just to pass buffers.
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